Full Name: Prof. Ayatollahi, Majid Reza   Position: Distinguished Professor   Phone: 98-21-77 240 201   Fax: 98-21-7724 0488   Email: m.ayat AT iust.ac.ir  Address: Iran University of Science & Technology, Tehran, IRAN

Link to Google-Scholar

University Degrees

• Ph.D, University of Bristol, UK (1999)
• M.Sc., Amirkabir University of Technology, Iran (1991)
• B.Sc., Iran University of Science and Technology, Iran (1988)

General Publication Information (as of January 2023):

1. Refereed Journal Articles         345 (Scopus)
2. h-index:                                     63 (Scopus)
3. h-index:                                     70 (Google scholar)
4. i10-index:                                 259 (Google scholar)
5. Total citations:                         12923 (Scopus)
6. Citations since 2019:                 7029 (Scopus)

Research Interests

• Fracture Mechanics.
• Computational Solid Mechanics.
• Experimental Solid Mechanics.

Current Research

• Geometry and constraint effects in fracture mechanics
• Rock Fracture Mechanics
• Experimental stress analysis of cracks and notches
• Mixed mode brittle fracture in cracked and notched components
• Mechanical behavior of polymer-based nanocomposites
• Failure analysis of adhesive joints
• Numerical technique for calculating the crack and notch tip parameters

 MAJOR AWARDS

• Top 1% world scientists in terms of the number of citations, Essential Science Indicators - Web of Science Group - Clarivate, 2017, 2018, 2019, 2020, 2021, 2022.
• National Distinguished Professor of the year in the Islamic Republic of Iran, selected by the Iranian Academy of Science, 2020
• National Eminent Professor of the year in Mechanical Engineering in the Islamic Republic of Iran, selected by the Iranian Society of Mechanical Engineers (ISME), 2018.
• NATIONAL DISTINGUISHED RESEARCHER of the year in the Islamic Republic of Iran, Selected by Ministry of Science, Research and Technology, 2017.
• NATIONAL DISTINGUISHED PROFESSOR of the year in the Islamic Republic of Iran, Selected by Ministry of Science, Research and Technology, Awarded by the Iranian President, 2014.
• Distinguished professor of the year in international collaborations, Iran University of Science and Technology, 2013, 2015, 2017, 2018, 2019, 2020.
• Eminent researcher of the year, Iran University of Science and Technology, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022.

Academic Background/Experience

• Vice Chair in Research Affairs (2000- 2008), School of Mechanical Engineering, IUST.
• Member of University research council (2000-2008), Iran University of Science and Technology.
• Member of committee for promotion assessment (2004-2016), School of Mechanical Engineering, IUST.
• Head of the Solid Mechanics educational group (2008-2016), School of Mechanical Engineering, IUST.
• Director of Fatigue and Fracture Research Laboratory (Since 2001), School of Mechanical Engineering, IUST.
• Director of the B.Sc. projects office (1989-1993), School of Mechanical Engineering, IUST.
• Distinguished Professor Since  July 2017, School of Mechanical Engineering, IUST.
• Professor 2007-2017, School of Mechanical Engineering, IUST.
• Associate professor 2003-2007, School of Mechanical Engineering, IUST.
• Assistant professor 1999-2003, School of Mechanical Engineering, IUST.
• Instructor 1989-1994, School of Mechanical Engineering, IUST.

International Recognitions/Collaborations:

1. Editorial board member: “Springer International” book series on “Structural Integrity” (Since 2018)
2. Editorial board member: International Journal of Pressure Vessels and Piping (since June 2012)
3. Editorial board member: Structural Engineering and Mechanics (Since February 2013)
4. Editorial board member: Theoretical and Applied Fracture Mechanics (Since December 2013)
5. Editorial board member: International Journal of Rock Mechanics and Mining Science (Since May 2016)
6. Editorial board member: Fatigue and Fracture of Engineering Materials and Structures (Since October 2016)
7. Editorial board member: Journal of Materials: Design and Applications, Proceedings of the Institution of Mechanical Engineers, Part L
8. Editorial board member: The Journal of Adhesion (Since October 2017)
9. Editorial board member: Material Design and Processing Communication (Wiley) (Since August 2018).
10. Editorial board member: Forces in Mechanics (Elsevier), (Since July 2021).
11. Editorial board member: International Journal of Structural Integrity (Emerald), (Since August 2021)
12. Editorial board member: Modelling (Since 2020)
13. Editorial board member: Mechanics of Solids (University of Porto) (Since April 2022)
14. Editorial board member: Engineering Fracture Mechanics (Since November 2022)
15. Guest co-editor: “Polymers” Special issue: “Damage Mechanics of Polymer Composites”, Vol. 12, 2020
16. Guest co-editor: Theoretical and Applied Fracture Mechanics, Special Issue on Mixed Mode Fracture, Vol. 91, No. 10. , 2017.
17. Guest co-editor: Advances in Materials Science and Engineering, Special issue "Brittle or Quasi-Brittle Fracture of Engineering Materials", 2014.
18. Member of ISRM committee for development of standard for fracture toughness testing by SCB specimen, (by invitation), 2011-2012.
19. Iran representative in the Asian Society of Experimental Mechanics (ASEM)
20. Research collaboration with University of Bristol, UK.
21. Research collaboration with Norwegian University of Science and Technology (NTNU), Norway.
22. Research collaboration with University of Padua, Italy.
23. Research collaboration with University of Porto, Portugal.
24. Research collaboration with ETH, Switzerland.
25. Research collaboration with Technical University of Liberec, Czech Republic.
26. Research collaboration with Politecnico di Milano, Italy.
27. Research collaboration with University of Rome (Sapienza), Italy.
28. Research collaboration with University of Malaya (UM), Malaysia.
29. Research collaboration with Technical University of Graz (TUGraz), Austria.
30. Research collaboration with Universiti Teknologi Malaysia (UTM), Malaysia.
31. Research collaboration with University of Siegen, Germany.
32. Research collaboration with IQS University, Spain

International Keynote/Invited speaker
 

• Keynote speaker, Faculty of Mechanical Engineering, Universiti Teknologi Malaysia (UTM), Feb 2023.
• Plenary speaker, The 62nd International Conference of Machine Design (ICMD 2022), Harrachov, Czech Republic, September 2022
• Invited speaker, University of Siegen, Germany, July 2022.
• Invited speaker, University of Siegen, Germany, February 2022.
• Keynote speaker, Annual Colloquium on Materials Modelling, Institut für Materialprüfung, Werkstoffkunde und Festigkeitslehre (IMWF), University of Stuttgart, Germany, June 2021.
• Keynote speaker, Distinguished Lecture Series, Universiti Teknologi Malaysia (UTM), July 2020.
• Keynote speaker, 5th International Conference On Advances in Mechanical Engineering, Istanbul, Turkey, December 2019
• Keynote speaker, The International Congress of Mechanics, Mechatronics and Materials (IC3M), Sousse, Tunisia, December 2019
• Keynote speaker, 1^st International Workshop on Plasticity, Damage and Fracture of Engineering Materials (IWPDF), Ankara, Turkey, August 2019.
• Invited speaker, IMAP, Technical University of Graz, Austria, May 2019.
• Keynote speaker, 7^th International Conference on Applied Science and Technology (ICAST2019), Karbala, Iraq, March 2019.
• Keynote speaker, International Conference on Advances in Mechanical Engineering (ICAME2018), Istanbul, Turkey, December 2018.
• Plenary lecturer, 2nd International Conference on Structural Integrity and Durability (ICSID-2018), Dubrovnik, Croatia, October 2018
• Keynote speaker, The First International Conference on Materials, Mimicking, Manufacturing from and for Bio Application, Milan, Italy, June, 2018.
• Keynote speaker, 26^th Annual International Conference of Iranian Society of Mechanical Engineering, Semnan, Iran, April 2018.
• Keynote speaker, 3rd International Conference on Mechanical, Manufacturing, Modeling and Mechatronics (IC4M 2018), Barcelona, Spain, February 2018.
• Keynote speaker, International Conference on Advances in Mechanical Engineering (ICAME2017), Istanbul, Turkey, December 2017.
• Keynote speaker, Asian conference on Experimental Mechanics (ACEM2017), Indonesia, August 2017.
• Keynote speaker, International Conference on Processing and Manufacturing of Advanced Materials (THERMEC2016), Austria, May 2016
• Invited speaker, University of Malaya (UM), Malaysia, January 2015
• Keynote speaker, XVII International Colloquium on Mechanical Fatigue of Metals, Verbania, Italy, June 2014
• Invited speaker, Universiti Teknologi Malaysia (UTM), November 2014
•      Invited speaker, Technical University of Graz (TUGraz), Austria, November 2013
• Invited speaker, Universiti Teknologi Malaysia (UTM), April 2013
• Invited speaker, University of Malaya (UM), Malaysia, January 2013
• Invited speaker, University of Malaya (UM), Malaysia, April 2012

Served as Reviewer for Numerous International Journals:
 
Graduate Thesis Supervision

  PHD students

• Zakeri, M., “Photoelastic analysis of cracks under mode I, mode II and mixed mode loading” (PhD), 2008.
• Aliha, M.R.M., “Mixed mode fracture in rock materials” (PhD), 2009.
• Torabi, A.R. "Brittle fracture in U and V-notched components" (PhD), 2009.
• Shadlou, S. “Fracture behavior of epoxy-based nanocomposites reinforced by MWCNTs”, (PhD) 2011.
• Akbardoost, J. “Geometry and size effects on mixed mode fracture in quasi-brittle materials”,(PhD) 2012.
• Pirmohammad S., “Experimental investigation of brittle fracture in hot mixed asphalt at low temperatures”, (PhD) 2013.
• Chamani H.R. , “Micromechanical study of fracture in ductile cast iron”, (PhD) 2016..
• Sabouri, B., “Investigation of the effect of out-of-plane shear load on fracture behavior of brittle polymers and carbon nanotube/epoxy nanocomposites”, (PhD) 2015.
• Mahdavi, E., "Study of crack growth in rock test specimens" (PhD) 2017.
• Karimzadeh, A “Investigation on Orthodontic Bond Strength Using Experimental and Numerical Methods”, (PhD) 2017.
• Akhavan Safar, H., “Failure load prediction of single lap adhesive joints based on the theory of critical distances”, (PhD) 2017.
• Rashidi Moghaddam, M. , “Geometry effects on fatigue and fracture of cracked components – An energy-based approach”, (PhD) 2017.
• Rahimi, A.S. “Investigating nonlinear fracture behavior of notched polymer-based nanocomposites using equivalent material concept”, (PhD) 2018.
• Heydari Meybodi, M. “Rupture assessment of rubber-like materials weakened by cracks and notches with or without nanoparticle reinforcement”, (PhD) 2018.
• Ajdani, A. “Proposing a novel method for fracture energy measurement in adhesive joints for complete range of mixed mode I/II loading” 2021.
• Bahrami. B. “Stress analysis and fracture prediction of notched structures under in-plane loading using digital image correlation method” 2021.
• Bahadori, A. “Stability Assessment of the Crack Growth Path in the notched brittle materials under mode I loading” 2021.
• Moazzami, M. “Experimental and numerical investigation of fracture in dissimilar metal/composite DCB adhesive joints under cyclic aging conditions”, 2022.
• Alavi, S.K. “Stress analysis of bi-material notched components using analytical and experimental methods” 2022.

  MSc Students

  Supervised more than 150 MSc theses 2000-2022.

Books

• Pirmohammad, S., Ayatollahi, M.R. (2020) Fracture behavior of asphalt materials, ISBN: 978-3-030-39973-3, Springer International, Switzerland
• Rahmandoust Moones, Ayatollahi, M.R. (2019) “Nanomaterials for advanced biological applications”, ISBN: ISBN 978-3-030-10834-2, Springer International, Switzerland.
• Rahmandoust Moones, Ayatollahi, M.R. (2016) Characterization of Carbon Nanotube-Based composites Under Consideration of Defects, ISBN: 978-3-319-00250-7, Springer International, Switzerland.
• Sedighiani, K. and Ayatollahi, M.R. (2012) Finite element analysis; theory and application with ABAQUS, ISBN: 978-600-5716-82-5, In Farsi.
• Ayatohi, M.R. (2012) Crack propagation in asphalt concretes, ISBN: 978-600-2690-12-8, In Farsi.
• Ghafoori, R., Ayatollahi, M.R., Keshmiri, A.R (2012) Plastic injection process, Vol 3 Injection Machines, Mold design an Standards, Design of Experiments, ISBN: 978-964-210-134-4, In Farsi.
• Ayatollahi, M.R., Ghafoori, R., Abbaszadeh, M. (2012) Plastic injection process, Vol. 2 Gas-Assisted, Multi-material, Microcellular, Fiber Orientation, Compression, ISBN: 978-964-210-137-5, In Farsi.
• Ayatollahi, M.R., Ghafoori, R., Sedaghat, O. (2010) Plastic injection process, Vol. 1 Simulation by software with some industrial applications, ISBN: 978-964-210-048-4, In Farsi.

Journal Papers (not updated)
Please refer to my Google scholar link for details
Link to Google-Scholar

 

2017

230) Saboori, B., Torabi,A.R., Ayatollahi,  M.R., Berto, F. (2017) Experimental verification of two stress-based criteria for mixed mode I/III brittle fracture assessment of U-notched components, Engineering Fracture Mechanics, Article in press.

229) Ayatollahi, M.R., Samari, M., Razavi S.M.J, da Silva, L.F.M (2017) Fatigue performance of adhesively bonded single lap joints with non-flat sinusoid interfaces, Fatigue and Fracture of Engineering Materials and Structures, Article in press.

228) Razavi S.M.J, Ayatollahi, M.R., Esmaeili, E., da Silva, L.F.M. (2017) Mixed-mode fracture response of metallic fiber-reinforced epoxy adhesive, European Journal of Mechanics / A Solids, Vol. 65, PP. 349-359.

227) Ayatollahi, M.R., Mirmohammadi, S.A. Asgharzadeh Shirazi, H. (2017) ,The tension-shear fracture behavior of polymeric bone cement modified with hydroxyapatite nano-particles, Archives of Civil and Mechanical Engineering, Article in press.

226) Heydari-Meybodi, M., Ayatollahi, M.R., Berto, F. (2017) Mixed-mode (I/II) rupture assessment of rubber-like materials weakened by cracks using the averaged strain energy density criterion, Theoretical and Applied Fracture Mechanics, Article in press.

225) Nemati Giv, Ayatollahi, M.R., A., Razavi, S.M.J., Khoramishad, H. (2017) The Effect of orientations of metal macrofiber reinforcements on mechanical properties of adhesively bonded single lap joints, Journal of Adhesion, Article in press.

224) Ayatollahi, M. R., Moghimi Monfared, R., Barbaz Isfahani, R. (2017) Experimental investigation on tribological properties of carbon fabric composites: effects of carbon nanotubes and nano silica, Journal of Materials: Design and Applications, Article in press.

223) Ch. Darabi, A., Chamani, H.R., Kadkhodapour, J., P.Anaraki, A., Alaie, A. Ayatollahi M. R. (2017) Micromechanical analysis of two heat-treated dual phase steels: DP800 and DP980, Mechanics of Materials, Vol. 110, PP. 68-83.

222) Heydari-Meybodi, M., Ayatollahi, M.R., Dehghany, M., Berto, F. (2017) Mixed-mode (I/II) failure assessment of rubber materials using the effective stretch criterion, Theoretical and Applied Fracture Mechanics, Article in press.

221) Rashidi Moghaddam, M. Ayatollahi, M.R., Berto, F. (2017) Mixed Mode Fracture Analysis Using Generalized Averaged Strain Energy Density Criterion for Linear Elastic Materials, International Journal of Solids and Structures, Vol. 120, PP. 137-145.

220) Ayatollahi, M.R., Torabi, A.R., Majidi, H.R. (2017) Brittle fracture in key-hole notched polymer specimens under combined compressive-shear loading, Amirkabir Journal of Science and Research Mechanical Engineering, Article in press, (In Farsi).

219) Safaei, S., Ayatollahi, M.R., Saboori, B. (2017) Fracture behavior of GPPS brittle polymer under mixed mode I/III loading, Theoretical and Applied Fracture mechanics, Article in press.

218) Torabi,A.R., Saboori, B., Ayatollahi,  M.R. (2017) Mode III notch fracture toughness assessment for various notch features, Physical Mesomechanics, Article in press.

217) Ayatollahi, M.R., Berto, F., Campagnolo, A., Gallo, P., Tang, K. (2017) Review of local strain energy density theory for the fracture assessment of Vnotches under mixed mode loading, Engineering Solid Mechanics, Vol. 5, PP. 113-132

216) Asgharzadeh Shirazi, H., Ayatollahi, M.R., Asnafi, A. (2017) To reduce both the maximum stress and stress shielding effect around a dental implant–bone interface using radial functionally graded biomaterials, Computer Methods in Biomechanics and Biomedical Engineering, Article in press.

215) Ayatollahi, M. R., Barbaz Isfahani, R., Moghimi Monfared (2017) Effects of multi-walled carbon nanotube and nanosilica on tensile properties of woven carbon fabric-reinforced epoxy composites fabricated using VARIM, Journal of Composite Materials, Article in press.

214) Akhavan Safar, A.R; Ayatollahi, M. R.; Rastegar, S., da Silva, L.F.M. (2017) Impact of geometry on the critical values of the stress intensity factor of adhesively bonded joints, Journal of Adhesion Science and Technology, Article in press.

213) Akhavan Safar, A.R; Ayatollahi, M. R.; Bahreinian, S.A., da Silva, L.F.M. (2017) Application of adhesively bonded single lap joints for fracture assessment of adhesive materials, Journal of Adhesion, Article in press.

212) Saboori, B., Ayatollahi, M. R. (2017). Experimental fracture study of MWCNT/epoxy nanocomposites under the combined out-of-plane shear and tensile loading, Polymer Testing, Vol. 59, No 5, PP. 193-202.

211) Koloor S.S.R., Ayatollahi, M.R., Tamin, MN (2017) Elastic-damage deformation response of fiber-reinforced polymer composite laminates with lamina interfaces, Journal of Reinforced Plastics and Composites, Article in press.

210) Ayatollahi, M.R., Zakeri, M. (2017) An Improved Definition for Mode I and Mode II Crack Problems, Engineering Fracture Mechanics, Vol. 175, PP. 235-246.

209) Asgharzadeh Shirazi, H., Mirmohammadi, S.A., Shaali, M., Asnafi, A., Ayatollahi, M.R. (2017) A constitutive material model for a commercial PMMA bone cement using a combination of nano-indentation test and finite element analysis, Polymer Testing, Vol. 59, PP. 328-335.

208) Akhavan Safar, A.R; Ayatollahi, M. R.; da Silva, L.F.M. (2017) Strength prediction of adhesively bonded single lap joints with different bondline thicknesses: A critical longitudinal strain approach, International Journal of Solids and Structures, Vol. 109, PP. 189-198.

207) Feng, P. Ayatollahi, M. R., Dai, F., Xu, N.W., Zhao, T. (2017) DEM Investigation on Fracture Mechanism of the CCNSCB Specimen under Intermediate Dynamic Loading, Arabian Journal of Geosciences, Vol 10, No 2, PP. 1-15.

206) Asgharzadeh Shirazi, H., Ayatollahi, M.R., Karimi, A.R., Navidbakhsh, M. (2017) A comparative finite element analysis of two types of axial and radial functionally graded dental implants with Titanium one around Implant-Bone Interface, Science and Engineering of Composite Materials, Article in press

205) Salimi Bani, M., Asgharzadeh Shirazi, H., Ayatollahi, M.R., Asnafi, A. (2017) A New Model for the Artificial Aorta Blood Vessels Using Double-sided Radial Functionally ‎Graded Biomaterials, Medical and Biological Engineering and Computing, Article in press.

204) Khoramishad, H; Akhavan Safar, A.R; Ayatollahi, M. R.; da Silva, L.F.M. (2017) Predicting static strength in adhesively bonded single lap joints using a critical distance based method: Substrate thickness and overlap length effects, Journal of Materials: Design and Applications, Vol. 231, (1-2), PP. 237-246.

203) Ayatollahi, M.R., Nemati Giv, A., Razavi, S.M.J., Khoramishad, H. (2017) Mechanical properties of adhesively single lap bonded joints reinforced with multi-‌‌‌walled carbon nanotubes and silica nanoparticles, The Journal of Adhesion, Article in press.

202) Saboori, B., Ayatollahi, M.R. (2017) CNT influence on fracture toughness of a polymer-based nanocomposite under the out-of-plane shear in comparison with pure tensile loading conditions, Modares Mechanical Engineering Journal, Vol. 16(10), PP. 441-447 . (In Farsi)

201) Berto, F., A. Ayatollahi, M.R., Campagnolo (2017) Fracture tests under mixed mode I/III loading: an assessment based on the local energy, International Journal of Damage Mechanics, Article in press.

200) Ayatollahi, M.R., Razavi S.M.J, Sommitsch, C, Moser, C (2017) Fatigue Life Extension by Crack Repair Using Double Stop-Hole Technique, Materials Science Forum, Vol. 879, PP. 3-8.

199) Rashidi Moghaddam, M. Ayatollahi, M.R. Razavi, S.M.J. Berto, F. (2017) Mode II Brittle Fracture Assessment Using an Energy Based Criterion, Physical Mesomechanics, Vol. 20(2), PP. 142-148.

198) Aliha, M.R.M., Mahdavi, E, Ayatollahi, M.R. (2017) The influence of specimen type on tensile fracture toughness of rock materials, Pure and Applied Geophysics, Article in press.

197) Ayatollahi, M.R., Torabi, A.R., Bahrami, B. (2017) Comprehensive notch shape factors for V-notched Brazilian disk specimens loaded under mixed mode І/ІІ from pure opening mode to pure closing mode, Archive of Applied Mechanics, Vol. 87, No 2, PP. 299-313.

196) Razavi S.M.J, Ayatollahi, M.R., Sommitsch, C, Moser, C (2017) Retardation of fatigue crack growth in high strength steel S690 using a modified stop-hole technique, Engineering Fracture Mechanics, Vol. 169, PP. 226-237.

195) Hou; Y., Sun; W., Huang; Y., Ayatollahi, M.R., Wang; L., Zhang, J. (2017) A Diffuse Interface Model to Investigate the Asphalt Concrete Cracking Subjected to Shear Loading at Low Temperature, ASCE Journal of Cold Regions Engineering, Article in press.

194) Ayatollahi, M.R., Moazzemi, M. (2017) Digital Image Correlation Method for Calculating Coefficients of Williams Expansion in Compact Tension Specimen, Optics and Lasers in Engineering, Vol. 90, PP. 26-33.
 

2016

193) Torabi, A.R., Majidi, H.R., Ayatollahi, M.R. (2016) Brittle failure of key-hole notches under mixed mode Ι/ΙΙ loading with negative mode Ι contributions, Engineering Fracture Mechanics, Vol. 168, PP. 51-72.

192) Chamani, H.R., Ayatollahi, M.R. (2016) The effect of Berkovich tip orientations on friction coefficient in nanoscratch testing of metals, Tribology International, Vol. 103, PP. 25-36.

191) Berto, F., Marsavina, L., Ayatollahi, M. R., Panin, S. V., Tserpes, K.I (2016) Brittle or Quasi-Brittle Fracture of Engineering Materials, Advances in Materials Science and Engineering, Article ID 7094298.

190) Berto, F., Ayatollahi, M.R., Borsato, T., Ferro, P. (2016) Local strain energy density to predict size-dependent brittle fracture of cracked specimens under mixed mode loading, Theoretical and Applied Fracture Mechanics, Vol. 86, PP. 217-224.

189) Torabi, A.R., Bahrami, B., Ayatollahi, M.R. (2016) Mixed mode І/ІІ brittle fracture in V-notched Brazilian disk specimens under negative mode І conditions, Physical Mesomechanics, Vol. 19(3), PP. 9-24.

188) Berto, F., Campagnolo, A., Ayatollahi, M.R. and Barnoush, A., (2016) Fracture assessment of graphite components weakened by rounded V-notches and subjected to static multiaxial loading. Procedia Structural Integrity, Vol. 2, PP.1805-1812.

187) Ayatollahi, M.R., Rashidi Moghaddam, M., Razavi, S.M.J., Berto, F. (2016) Geometry effects on crack path and fracture load in PMMA specimens, Engineering Fracture Mechanics, Vol. 163(9), PP. 449-461.

186) Karimzadeh, A., Ayatollahi, M.R., Bushroa, A. (2016), Effect of dental restorative material type and shade on characteristics of two-layer dental composite systems Latin American Journal of Solids and Structures, Vol 13 (10), PP. 1851-1865.

185) Chamani, H.R., Ayatollahi, M.R. (2016) Equivalent cone apex angle of Berkovich indenter in face-forward and edge-forward nanoscratch, Wear, Vol. 356-357, PP. 53-65.

184) Ayatollahi, M.R., Akbardoost, J, Berto, F. (2016) Size effects on mixed-mode fracture behavior of polygranular graphite, Carbon, Vol. 103, PP. 394-403.

183) Ayatollahi, M.R., Heydari-Meybodi, M., Dehghany, M., Berto, F. (2016) A new criterion for rupture assessment of rubber-like materials under Mode-I crack loading: The effective stretch criterion, Advanced Engineering Materials, Vol. 18(8), PP. 1364-1370

182) Ayatollahi, M.R. Torabi, A.R., Rahimi, A.S. (2016) Brittle fracture assessment of engineering components in the presence of notches: A review, Fatigue and Fracture of Engineering Materials and Structures, Vol 39, 267-291.

181) Ayatollahi, M.R., Mahdavi, E., Alborzi, M.J., Obara Y., (2016) Stress intensity factors of semi-circular bend specimens with straight-through and chevron notches, Rock Mechanics and Rock Engineering, Vol. 49, No 4, PP. 1161-1172.

180) Asgharzadeh Shirazi, H., Ayatollahi, M.R., Beigzadeh (2016) Preparation and characterization of hydroxyapatite derived from natural bovine bone and PMMA/BHA composite for biomedical applications, Materials Technology: Advanced Performance Materials, Vol. 31(8), PP. 448-453.

179) Pirmohammad S., Khoramishad, H., Ayatollahi M.R. (2016) Effects of asphalt concrete characteristics on cohesive zone model parameters of hot mix asphalt mixtures, Canadian Journal of Civil Engineering, Vol. 43, PP. 226-232.

178) Ayatollahi, M.R., Torabi, A.R., Bahrami, B. (2016) On the necessity of using critical distance model in mixed mode brittle fracture prediction of V-notched Brazilian disk specimens under negative mode І conditions, Theoretical and Applied Fracture Mechanics, Vol. 84, PP. 38-48.

177) Ayatollahi M. R., Ch. Darabi, A., Chamani, H.R., Kadkhodapour, J. (2016) 3D micromechanical modeling of failure and damage evolution in dual phase steel based on a real 2D microstructure, Acta Mechanica Solida Sinica, Vol. 29, No 1, PP. 95-110.

176) Pakzad, R. and Ayatollahi, M.R. (2016) A comprehensive study on crack tip parameters of modified ring specimen for mixed-mode fracture toughness tests on brittle materials, Geotechnical Testing Journal, Vol. 39, No. 1, PP. 144-156.

175) Ayatollahi, M.R., Nemati Giv, A, Razavi, SMJ. (2016) The effect of macro fiber reinforcements on mechanical behavior of single lap adhesively bonded joints in two different orientations, Modares Mechanical Engineering Journal, Vol. 16(1), PP. 121-128 (In Farsi)

174) Saboori, B., Ayatollahi, M.R., Torabi, A.R., Berto, F. (2016) Mixed mode I/III brittle fracture in round-tip V-notches, Theoretical and Applied Fracture Mechanics, Vol. 83, PP. 135-151.
 

2015

173) Ayatollahi, M.R., Naeemi, A.R., Alishahi, E (2015) Effects of mixed contents of carbon nanoreinforcements on the impact resistance of epoxy-based nanocomposites, Structural Engineering and Mechanics, Vol. 56(2), PP. 157-167.

172) Ayatollahi, M.R. Rashidi Moghaddam, M., Berto, F. (2015) A generalized strain energy density criterion for mixed mode fracture analysis in brittle and quasi-brittle materials, Theoretical and Applied Fracture Mechanics, Vol. 79, PP. 70-76.

171) Koloor, S.S.R., Ayatollahi, M.R, Tamin, M.N. (2015) Modeling interlaminar shear crack-jump phenomenon in fiber-reinforced polymer composites, Advanced Materials Research, Vol 1125, PP. 74-78.

170) Berto, F., Campagnolo, A. Ayatollahi, M.R. (2015) Brittle Fracture of Rounded V-Notches in Isostatic Graphite under Static Multiaxial Loading. Physical Mesomechanics, Vol. 18, No. 4, PP. 283-297

169) Ayatollahi, M.R., Razavi, S.M.J., Rashidi Moghaddam M., Berto, F. (2015) Mode-I fracture analysis of PMMA using modified energy-based models, Physical Mesomechanics, Vol. 18(4), PP. 326-336.

168) Berto, F., Campagnolo, A. Ayatollahi, M.R. (2015) V-notches with root hole subjected to combined tension and torsion loadings: the application of the fictitious notch rounding concept, Engineering Fracture Mechanics, Vol. 148, PP. 82-96.

167) Ayatollahi, M.R., Rahimi, A.S., Karimzadeh, A. (2015) Atomic simulation of temperature effects on the mechanical properties of thin films, Mechanics of Advanced Composite Structures, Vol. 2, No 1, PP. 31-38.

166) Ayatollahi, M.R., Razavi, S.M.J., Yahya M.Y. (2015) Mixed mode fatigue crack initiation and growth in a CT specimen repaired by stop hole technique, Engineering Fracture mechanics, Vol. 145, PP. 115- 127.

165) Karimzadeh, A., Ayatollahi, M.R. Hosseinzadeh-Nik, T. (2015) Effects of a nano-composite adhesive on mechanical properties of tooth enamel after removing orthodontics bracket – An experimental study using nano-indentation test, Experimental Mechanics, Vol. 55, PP. 1769-1777.

164) Mahdavi, E., Obara Y., Ayatollahi, M.R. (2015) Numerical investigation of stress intensity factor for semi-circular bend specimen with chevron notch, Engineering Solid Mechanics, Vol. 3, PP. 235-244.

163) Ayatollahi M. R., Akhavan-Safar A. (2015) Failure load prediction of single lap adhesive joints based on a new linear elastic criterion, Theoretical and Applied Fracture mechanics, Vol. 80, PP. 210-217.

162) Asgharzadeh Shirazi, H., Ayatollahi, M.R., Naimi-Jamal, M.R. (2015) Influence of hydroxyapatite nano-particles on the mechanical and tribological properties of orthopedic cement-based nano-composites measured by nano-indentation and nano-scratch experiments, Journal of Materials Engineering and Performance, Vol. 24, No 9, 3300-3306.

161) Ayatollahi, M.R, Yahya, M.Y., Asgharzadeh Shirazi, H., Hassan, S.A. (2015) Mechanical and tribological properties of hydroxyapatite nanoparticles extracted from natural bovine bone and the bone cement developed by nano-sized bovine hydroxyapatite filler, Ceramics International, Vol. 41(9), PP. 10818-10827.

160) Ayatollahi, M.R., Saboori, B (2015) T-stress Effects in Mixed Mode I/II/III Brittle Fracture, Engineering Fracture Mechanics, Vol 144, PP. 32-45.

159) Torabi, A.R., Firoozabadi, M. Ayatollahi, M.R. (2015) Brittle fracture analysis of blunt V-notches under compression, International Journal of Solids and Structures, Vol. 67-68, PP. 219-230.

158) Ayatollahi M.R., Karimzadeh, A., Yazid Yahya, M. Nikkhooyifar, M., Ayob, A. (2015) Effects of temperature change and beverage on mechanical and tribological properties of dental restorative composites, Materials Science and Engineering C, Vol 54, PP. 69-75.

157) Ayatollahi, M.R., Torabi, A.R., Firoozabadi, M. (2015) Theoretical and experimental investigation of brittle fracture in V-notched PMMA specimens under compressive loading, Engineering Fracture Mechanics, Vol. 135, PP. 187-205.

156) Cheloee Darabi, A., Chamani, H.R., Ayatollahi M. R. (2015) Predicting macromechanical behavior of dual phase steels based on actual micromechanical modeling, Mechanics of Structures and Fluids, Vol. 5 No 1, PP. 31-38 (In Farsi).

155) Pirmohammad S, Ayatollahi M.R. (2015) Asphalt concrete resistance against fracture at low temperatures under different modes of loading, Cold Regions Science and Technology, Vol. 110, PP. 149-159.

154) Ayatollahi, M.R., Saboori, B (2015) A new fixture for fracture tests under mixed mode I/III loading” European Journal of Mechanics - A/Solids, Vol. 51, PP. 67-76.

153) Choupani, M, Ayatollahi, M.R., Mallakzadeh, M.R. (2015) Investigation of fracture in an interface crack between bone cement and stainless steel, Latin American Journal of Solids and Structures, Vol 12 (3), PP. 446-460.

152) Ayatollahi, M.R., Saboori, B. (2015) Maximum tangential strain energy density criterion for general mixed mode I/II/III brittle fracture, International Journal of Damage Mechanics, Vol. 24(2), PP. 263-278.
 

2014

151) Akbardoost, J., Ayatollahi, M.R., Aliha, M.R.M., Pavier, M.J., Smith, D.J. (2014) Size-dependent fracture behavior of Guiting limestone under mixed mode loading, International Journal of Rock Mechanics and Mining Sciences, Vol. 71, PP. 369-380.

150) Ayatollahi, M.R., Razavi, S.M.J., Chamani, H.R (2014) Fatigue life extension by crack repair using stop-hole technique under pure mode-I and pure mode-II loading conditions, Procedia Engineering, Vol. 74, PP. 18-21.

149) Heidari-Rarani, M., Aliha, M.R.M., Shokrieh, M.M., Ayatollahi, M.R. (2014) Mechanical durability of an optimized polymer concrete under various thermal cyclic loadings- An experimental study, Construction and Building Materials, Vol 64, PP. 308-315.

148) Asgharzadeh Shirazi, H., Ayatollahi, M.R. (2014) Biomechanical analysis of functionally graded biomaterial disc in terms of motion and stress distribution in lumbar spine, International Journal of Engineering Science, Vol. 84, PP. 62-78.

147) Berto, F., Elices, M., Ayatollahi, M. R., Panin, S. V., Tserpes, K. (2014) Brittle or Quasi-Brittle Fracture of Engineering Materials: Recent Developments and New Challenges, Advances in Materials Science and Engineering, Article ID 347485.

146) Zare Najafabadi, M., Ayatollahi, M. R. (2014) Evaluation of indentation method in determining fracture toughness of rocks, Journal of Iranian Association of Engineering Geology, Vol. 6, PP. 61-70. (In Farsi)

145) Ayatollahi, M.R., Razavi, S.M.J., Chamani, H.R. (2014) A numerical study on the effect of symmetric crack flank holes on fatigue life extension of a SENT specimen, Fatigue and Fracture of Engineering Materials and Structures, Vol. 37, No. 10, PP. 1153-1164.

144) Akbardoost, J, Ayatollahi, M.R (2014) Experimental analysis of mixed mode crack propagation in brittle rocks: the effect of non-singular terms, Engineering Fracture Mechanics, Vol. 129, PP. 77-89.

143) Ayatollahi, M.R, Pirmohammad, S., Sedighiani, K. (2014) Three-dimensional finite element modeling of a transverse top-down crack in asphalt concrete, Computers and Concrete, Vol. 13, No. 4, PP. 309-323.

142) Aliha M.R.M., Ayatollahi, M.R (2014) Rock fracture toughness study using cracked chevron notched Brazilian disc specimen under pure modes I and II loading- A statistical approach, Theoretical and Applied Fracture Mechanics, Vol 69, PP. 17-25.

141) Kuruppu, M.D., Obara, Y., Ayatollahi, M.R., Chong, K.P., Funatsu, T. (2014) ISRM-Suggested Method for Determining the Mode I Static Fracture Toughness Using Semi-Circular Bend Specimen, Rock Mechanics and Rock Engineering, Vol. 47, No 1, PP. 267-274.

140) Ayatollahi, M.R., Akbardoost, J. (2014) Size and Geometry Effects on Rock Fracture Toughness - Mode I Fracture, Rock Mechanics and Rock Engineering, Vol. 47, No 2, PP. 677-687.

139) Torabi, A.R., Ayatollahi, M.R. (2014) Compressive brittle fracture in V-notches with end holes, European Journal of Mechanics - A/Solids, Vol. 45, PP. 32-40.

138) Sistaninia, Masoud, Ayatollahi, M.R., Sistaninia Meisam (2014) “On fracture analysis of cracked graphite components under mixed mode loading” Mechanics of Advanced Materials and Structures, Vol. 21, No 10, PP. 781-791.

137) Ayatollahi, M.R., Razavi, S.M.J., Chamani, H.R. (2014) Evaluation of stress intensity factors of a center cracked curved plate in the presence of crack flank stop drill holes, Modares Mechanical Engineering Journal, Vol. 14, No. 9, PP. 133-139. (In Farsi)

136) Pirmohammad S, Ayatollahi M.R. (2014) Fracture resistance of asphalt concrete under different loading modes and temperature conditions, Construction and Building Materials, Vol. 53, PP. 235-242.

135) Karimzadeh, A., Ayatollahi, M.R., Bushroa, A.R., Herliansyah, M.K. (2014) Effect of sintering temperature on mechanical and tribological properties of hydroxyapatite measured by nanoindentation and nanoscratch experiments, Ceramics International, Vol. 40, PP. 9159-9164.

134) Berto F., Lazzarin P., Ayatollahi M.R., (2014) Recent developments in brittle and quasi-brittle failure assessment of graphite by means of SED, Key Engineering Materials, Vol. 577-578, PP. 25-28.

133) Karimzadeh, A., Ayatollahi, M.R., Asgharzadeh Shirazi, H. (2014) Mechanical Properties of a Dental Nano-Composite in Moist Media Determined by Nano-Scale Measurement, International Journal of Materials, Mechanics and Manufacturing, Vol. 2(1), PP. 67-72.

132) Karimzadeh, A., Ayatollahi, M.R., Alizadeh, M. (2014) Finite element simulation of nano-indentation experiment on Aluminum 1100, Computational Materials Science, Vol. 81, PP. 595-600.

131) Khoramishad, H., Akbardoost, J., Ayatollahi, M.R. (2014) Size Effects on Parameters of Cohesive Zone Model in Mode I fracture of Limestone, International Journal of Damage Mechanics, Vol. 23, No. 4, PP. 588-605.

130) Aliha, M.R.M., Pakzad, R., Ayatollahi, M.R. (2014) Numerical analyses of straight through cracked flattened Brazilian disc specimen under mixed mode loading, ASCE's Journal of Engineering Mechanics, Vol 140, No 1, PP. 219-224.
 

2013

129) Ayatollahi, M.R., Akbardoost, J (2013) Size effects in mode II brittle fracture of rocks, Engineering Fracture Mechanics, Vol. 112-113, PP. 165-180.

128) Ayatollahi, M. R., Karimzadeh, A (2013) Nano-indentation measurement of fracture toughness of dental enamel, International Journal of Fracture, Vol. 183 (1), PP. 113-118.

127) Karimzadeh, A., Ayatollahi, M.R. (2013) Assessment of thermocycling effect on mechanical properties of of dental nano-composite, Modares Mechanical Engineering Journal, Vol. 13(3), PP 1-9. (In Farsi)

126) Kaveh, Z., Ayatollahi, M.R. (2013) Computation of mode I notch stress intensity factors in a V-notched TPB specimen, Modares Mechanical Engineering Journal, Vol. 13(5), PP. 74-82. (In Farsi)

125) Hosseinzadeh-Nik, T. Karimzadeh, A. Ayatollahi, M.R. (2013) Bond strength of a nano-composite used for bonding ceramic orthodontic brackets, Materials and Design, Vol. 51, PP. 902-906.

124) Lazzarin, P, Berto, F., Ayatollahi, M.R. (2013) Brittle failure of inclined key-hole notches in isostatic graphite under in-plane mixed mode loading, Fatigue and Fracture of Engineering Materials and Structures, Vol. 36(9), PP. 942-955

123) Berto F., Lazzarin P., Ayatollahi M.R., (2013) Brittle fracture of sharp and blunt V-notches in isostatic graphite under pure compression loading, Carbon, Vol. 63, PP. 101-116.

122) Ayatollahi, M.R., Pirmohammad, S. (2013) “Temperature effects on brittle fracture in cracked asphalt concretes”, Structural Engineering and Mechanics, Vol. 45, No 1, PP. 19-32.

121) Ayatollahi, M.R., Akbardoost, J (2013) “Effects of specimen dimensions on combined shear-tension brittle fracture”, Iranian Journal of Mining Engineering, Vol. 8, No. 18, PP. 67-79. (In Farsi)

120) Shadlou, S., Alishahi, E., Ayatollahi, M.R. (2013) "Fracture behavior of epoxy nanocomposites reinforced with different carbon nano-reinforcements", Composite Structures, Vol. 95, PP. 577-581.

119) Ayatollahi, M.R., Dehghany, M., Mirsayar, M.M. (2013) "A comprehensive photoelastic study for mode I sharp V-notches", European Journal of Mechanics - A/Solids, Vol. 37(1), PP. 216-230.

118) Aliha, M.R.M., Hosseinpour, R., Ayatollahi, M.R. (2013) “Application of cracked triangular specimen subjected to three-point bending for investigating fracture behavior of rock materials”, Rock Mechanics and Rock Engineering, Vol 46(5), PP. 1023-1034.

117) Aliha, M.R.M., Ayatollahi, M.R. (2013) “Two-parameter fracture analysis of SCB rock specimen under mixed mode loading”, Engineering Fracture Mechanics, Vol. 103, PP. 115–123.

116) Alishahi, E., Shadlou, S., Doagou-R, S., Ayatollahi, M.R. (2013) “Effects of Carbon Nanoreinforcements of Different Shapes on Mechanical Properties of Epoxy-Based Nanocomposites” Macromolecular Materials and Engineering, Vol. 298(6), PP. 670-678.

115) Ayatollahi, M.R. , Dehghany, M., Kaveh, Z. (2013) Computation of V-notch shape factors in four-point bend specimen for fracture tests on brittle materials, Archive of Applied Mechanics, Vol. 83, PP. 345-356.
 

2012

114) Ameri, M., Mansourian, A., Pirmohammad, S., Aliha, M.R.M., Ayatollahi, M.R. (2012) "Mixed Mode Fracture Resistance of Asphalt Concrete Mixtures", Engineering Fracture Mechanics, Vol. 93, PP. 153-167.

113) Aliha, M.R.M., Heidari-Rarani, M., Shokrieh, M.M., Ayatollahi, M.R. (2012) "Experimental determination of tensile strength and KIc of polymer concretes using semi-circular bend (SCB) specimens", Structural Engineering and Mechanics, Vol. 43(6), PP. 823-834.

112) Shadlou, S., Ayatollahi, M.R., Shokrieh, M.M. (2012) " Fracture behavior of epoxy/DWNT nanocomposites using molecular dynamics simulation" Polymer Science and Technology, Vol 25, No. 4, 315-322, In Farsi.

111) Ayatollahi, M.R., Akbardoost, J. (2012) Size Effects on Fracture Toughness of Quasi-Brittle Materials- A New Approach, Engineering Fracture Mechanics, Vol. 92, PP. 89-100.

110) Karimzadeh, A., Ayatollahi, M.R. (2012) Investigation of mechanical and tribological properties of bone cement by nano-indentation and nano-scratch experiments, Polymer Testing, Vol. 31, PP. 828-833.

109) Aliha, M.R.M., Sistaninia, M., Smith, D.J., Pavier, M.J. Ayatollahi, M.R. (2012) “Geometry Effects and Statistical Analysis of Mode I Fracture in Guiting Limestone” International Journal of Rock Mechanics and Mining Sciences, Vol. 51, PP. 128-135.

108) Ayatollahi, M.R., Karimzadeh, A. (2012) “Determination of Fracture Toughness of Bone Cement by Nano-Indentation Test” International Journal of Fracture, Vol. 175, PP. 193-198

107) Ayatollahi, M.R., Sedighiani, Karo (2012) “A T-stress controlled specimen for mixed mode fracture experiments on brittle materials”, European Journal of Mechanics - A/Solids, Vol. 36, PP. 83-93.

106) Aliha, M.R.M., Ayatollahi, M.R. (2012) “Analysis of fracture initiation angle in some cracked ceramics using the generalized maximum tangential stress criterion”, International Journal of Solids and Structures, Vol. 49(13), PP. 1877-1883.

105) Ayatollahi, M.R., Doagou-Rad, S., Shadlou, S. (2012) “Nano/micro scale investigation of tribological and mechanical properties of epoxy/MWNT nanocomposites” Macromolecular Materials & Engineering, Vol. 297(7), PP. 689-701.

104) Ayatollahi, M.R., Alishahi, E., Doagou-R, S., Shadlou, S, (2012) “Tribological and mechanical properties of low content nanodiamond/epoxy nanocomposites” Composites, Part B, Vol 43 (8), PP. 3425-3430.

103) Ayatollahi, M.R., Sedighiani, K, (2012) “Mode I fracture initiation in limestone by strain energy density criterion” Theoretical and Applied Fracture Mechanics, Vol. 57(1), PP. 14-18.

102) Berto, F., Lazzarin, P., Ayatollahi, M.R. (2012) “Brittle Fracture of Sharp and Blunt V-notches in isostatic graphite under torsion loading” Carbon, Vol. 50, PP. 1942-1952.

101) Shokrieh, M.M., Heidari-Rarani, M., Ayatollahi, M.R. (2012) “Interlaminar fracture toughness of unidirectional DCB specimens: A novel theoretical approach” Polymer testing, Vol. 31, PP. 68-75.

100) Aliha, M.R.M., Ayatollahi, M.R., Akbardoost, J. (2012) “Typical upper bound-lower bound mixed mode fracture resistance envelops for rock material” Rock Mechanics and Rock Engineering, Vol. 45(1), PP. 65-74.

99) Shokrieh, M.M., Heidari-Rarani, M., Ayatollahi, M.R. (2012) “Delamination R-curve as a material property of unidirectional glass/epoxy composites”, Materials and Design, Vol. 34, PP. 211-218.
 

2011

98) Ayatollahi, M.R., Sedighiani, K, (2011) “Effects of wind and wave loads on stress intensity factors of a cracked offshore structure” Journal of Marine Engineering, Vol. 7, No. 13, PP. 83-89.

97) Ayatollahi, M.R., Shokrieh, M.M., Shadlou, S., Kefayati, A.R., Chitsazzadeh, M. (2011) “Mechanical and electrical properties of epoxy/multi-walled carbon nanotube/nanoclay nanocomposites” Iranian Polymer Journal, Vol. 20(10), PP. 835-843.

96) Ayatollahi, M.R., Mohammadi, Faezeh, Chamani, H.R. (2011) “Thermo-mechanical fatigue life assessment of a diesel engine piston” International Journal of Automotive Engineering, Vol. 1(4), PP. 256-266.

95) Ayatollahi, M.R., Aliha, M.R.M., (2011) “On the Use of Anti-Symmetric Four-Point Bend Specimen for Mode II Fracture Experiments” Fatigue and Fracture of Engineering Materials and Structures, Vol. 34, PP. 898-907.

94) Ayatollahi, M.R., Shadlou, S., Shokrieh, M.M. (2011) "Mixed mode brittle fracture in epoxy/multi-walled carbon nanotube nanocomposites " Engineering Fracture Mechanics, Vol.78, PP. 2620-2632.

93) Ayatollahi, M.R., Alishahi, E, Shadlou, S. (2011) "Mechanical behavior of nanodiamond/epoxy nanocomposites" International Journal of Fracture, Vol 170, PP. 95-100.

92) Ayatollahi, M.R., Torabi, A.R., (2011) “Experimental verification of RV-MTS model for fracture in soda-lime glass weakened by a V-notch “Journal of Mechanical Science and Technology, Vol. 25(10), PP. 2529-2534.

91) Shokrieh, M.M., Heidari-Rarani, M., Ayatollahi, M.R. (2011) “Calculation of GI for a multidirectional composite double cantilever beam on two-parametric elastic foundation”, Aerospace Science and Technology, Vol. 15, PP. 534-543.

90) Ayatollahi, M.R., Mirsayar, M.M., Dehghany, M. (2011) “Experimental determination of stress field parameters in bi-material notches using photoelasticity” Materials and Design, Vol. 32, PP. 4901-4908.

89) Ayatollahi, M.R., Mohammadi, F., Chamani, H.R. (2012) "Thermo-Mechanical Fatigue Life Assessment of Diesel Engine Hot Components", Journal of Engine Research, Vol. 23, PP 59-71, In Farsi.

88) Ayatollahi, M.R., Pourkavian, M.H., Aliha, M.R.M., (2011) Determination of minimum pressure required for initiation of crack growth in hydraulic fracturing process, Iranian Journal of Mining Engineering, Vol. 6(12), PP. 61-70 (in Farsi).

87) Ayatollahi, M.R., Aliha, M.R.M., Saghafi, H. (2011) "An improved semi-circular bend specimen for investigating mixed mode brittle fracture" Engineering Fracture Mechanics, Vol. 78, PP. 110-123

86) Ayatollahi, M.R., Torabi, A.R. (2011) "Failure assessment of notched polycrystalline graphite under tensile-shear loading" Materials Science and Engineering, Vol. 528, PP. 5685-5695

85) Ayatollahi, M.R., Shadlou, S., Shokrieh, M.M. (2011) "Fracture toughness of epoxy/multi-walled carbon nanotube nano-composites under bending and shear loading condition" Materials and Design, Vol. 32, PP. 2115-2124

84) Ayatollahi, M.R., Shadlou, S., Shokrieh, M.M. (2011) "Multiscale modeling for mechanical properties of carbon nanotube reinforced nanocomposites subjected to different types of loading" Composite Structures, Vol. 93, PP. 2250-2259

83) Ayatollahi, M.R., Sistaninia, M. (2011) “Mode II fracture study of rocks using Brazilian disk specimens” International Journal of Rock Mechanics and Mining Sciences, Vol. 48, PP. 819-826

82) Ayatollahi, M.R., Shadlou, S., Shokrieh, M.M., Chitsazzadeh, M. (2011) "Effect of multi-walled carbon nanotube aspect ratio on mechanical and electrical properties of epoxy-based nanocomposites" Polymer Testing, Vol. 30, PP. 548-556.

81) Ayatollahi, M.R., Shadlou, S., Shokrieh, M.M. (2011) "Correlation between aspect ratio of MWCNTs and mixed mode fracture of epoxy based nanocomposites" Materials Science and Engineering, Vol. 528, PP. 6173-6178

80) Ameri, M., Mansourian, A., Heidary Khavas, M., Aliha, M.R.M., Ayatollahi, M.R. (2011) “Cracked asphalt pavement under traffic loading-A 3D finite element analysis” Engineering Fracture Mechanics, Vol. 78, PP. 1817-1826.

79) Ayatollahi, M.R., Berto, F., Lazzarin, P. (2011) "Mixed mode brittle fracture of sharp and blunt V-notches in polycrystalline graphite" Carbon, Vol. 49, PP. 2465-2474.

78) Zakeri, M., Ayatollahi M.R., Guagliano, M. (2011) " A Photoelastic study of T-stress in centrally cracked Brazilian disc specimen under mode II loading" Strain, Vol. 47,  PP. 268-274

77) Ayatollahi, M.R., Torabi, A.R., Azizi, P. (2011) “Experimental and Theoretical Assessment of Brittle Fracture in Engineering Components Containing a Sharp V-Notch” , Experimental Mechanics, Vol. 51, PP. 919-932

76) Ayatollahi, M.R., Dehghany, M., Nejati, M. (2011) "Fracture analysis of V-notched Components-Effects of first non-singular stress term" International Journal of Solids and Structures, Vol. 48, PP. 1579-1589

75) Berto, F., Ayatollahi, M.R. (2011) "Fracture assessment of Brazilian disc specimens weakened by blunt V-notches under mixed mode loading by means of local energy" Materials and Design, Vol. 32, PP. 2858-2869

74) Ayatollahi, M.R., Nejati, M. (2011) "Determination of NSIFs and coefficients of higher order terms for sharp notches using finite element method" International Journal of Mechanical Sciences, Vol. 53, PP 164-177

73) Ayatollahi, M.R., Aliha, M.R.M., (2011) “Fracture analysis of some ceramics under mixed mode loading” Journal of American Ceramics Society, Vol. 94, No 2, PP. 561-569

72) Ayatollahi, M.R, Nejati, M. (2011) “Experimental evaluation of stress field around the sharp notches using photoelasticity” Materials and Design, Vol. 32, 561-569

71) Ayatollahi, M.R, Nejati, M. (2011) “An overdeterministic method for calculation of coefficients of crack tip asymptotic field from finite element analysis”, Fatigue and Fracture of Engineering Materials and Structures, Vol. 34, PP. 159-176
 

2010

70) Ayatollahi, M.R., Sedighiani, K. (2010) “Crack Tip Plastic Zone under Mode I, Mode II and Mixed Mode (I+II) Conditions” Structural Engineering and Mechanics, Vol 36, No. 5, PP. 575-598

69) Ayatollahi, M.R., Mirsayar, M.M., Nejati, M. (2010) "Evaluation of first non-singular stress term in bi-material notches" Computational Materials Science, Vol. 50, PP. 752-760

68) Ayatollahi, M.R, Torabi, A.R. (2010) “Investigation of mixed mode brittle fracture in rounded-tip V-notched components” Engineering Fracture Mechanics, Vol. 77, 3087-3104

67) Rezaei, A., Soltani, F., Vafaei, F., Khoshhal, M., Ayatollahi, M.R., Soltani, N., Nejati, M. (2010) "Comparison of stresses induced by Fiber Post, ParaPost and Casting Post in root canals by Photoelasticity method" Iranian Endodontic Journal, Vol. 5, PP. 11-16.

66) Ayatollahi, M.R., Dehghany, M. (2010) “On T-stresses near V-notches” International Journal of Fracture, Vol. 165, No 1, PP. 121-126

65) Saghafi, H. Ayatollahi, M.R., Sistaninia, M. (2010) “A modified MTS criterion (MMTS) for mixed-mode fracture toughness assessment of brittle materials” Materials Science and Engineering: A, Vol. 527, No. 21-22, PP. 5624-5630

64) Aliha, M.R.M., Ayatollahi, M.R., Smith, D.J., Pavier, M.J. (2010) “Geometry and size effects on fracture trajectory in a limestone rock under mixed mode loading” Engineering Fracture Mechanics, Vol. 77, No 11, PP. 2200-2212

63) Ayatollahi, M.R, Torabi, A.R. (2010) “Tensile fracture in notched polycrystalline graphite specimens” Carbon, Vol. 48, No 8, PP. 2255-2265.

 62) Ayatollahi M.R., Khoramishad, H., (2010) "Stress intensity factors for a semi-elliptical internal crack embedded in a buried pipe" International Journal of Pressure Vessels and Piping" Vol. 87, No. 4, PP. 165-169.

61) Ayatollahi, M.R., Hashemi, R., Rokhi, H. (2010) "New formulation for vibration analysis of Timoshenko beam with double-sided cracks" Structural Engineering and Mechanics, Vol. 34, No 4. PP. 475-490.

60) Ayatollahi M.R., Torabi A.R. (2010) "Determination of mode II fracture toughness for U-shaped notches using Brazilian disc specimen" International Journal of Solids and Structures, Vol. 47, PP. 454-465.

59) Aliha, M.R.M., Ayatollahi, M.R. (2010) "Geometry effects on fracture behaviour of polymethyl methacrylate" Materials Science and Engineering-A, Vol. 527, PP. 526-530.

58) Ayatollahi M.R., Torabi A.R. (2010) "Brittle fracture in rounded-tip V-shaped notches" Materials and Design, Vol. 31, PP. 60-67.
 

2009

57) Khoramishad, H., Ayatollahi, M.R. (2009) "Finite element analysis of a semi-elliptical external crack in a buried pipe" Transactions of the Canadian Society for Mechanical Engineering, Vol. 33, PP. 399-409.

56) Aliha, M.R.M., Ayatollahi, M.R., Kharazi, B. (2009) "Mode II brittle fracture assessment using ASFPB specimen" International Journal of Fracture, Vol. 159, PP. 241-246.

55) Ayatollahi, M.R., Saghafi, H., Aliha, M.R.M., (2009) Effect of specimen dimensions on fracture toughness of Harsin marble rock, Journal of Iranian Association of Engineering Geology, Vol. 2, PP. 73-82.

54) Aliha, M.R.M., Ayatollahi, M.R. (2009) “Brittle Fracture Evaluation of a Fine Grain Cement Mortar in combined tensile-shear deformation” Fatigue and Fracture of Engineering Materials and Structures, Vol. 32, PP. 987-994.

53) Ayatollahi M.R., Torabi A.R. (2009) Investigation of Fracture in V-notched Brittle Polymers under Pure Shear Loading, Iranian Journal of Polymer Science and Technology, Vol. 22, PP. 63-73.

52) Ayatollahi M.R., Torabi A.R. (2009) "A criterion for brittle fracture in U-notched components under mixed mode loading" Engineering Fracture Mechanics, Vol. 76, PP. 1883-1896.

51) Ayatollahi, M.R. and Bagherifard S., (2009) "Numerical analysis of an improved DCDC specimen for investigating mixed mode fracture in ceramic materials", Computational Materials Science, Vol. 46, PP. 180-185.

50) Ayatollahi, M.R. and Arian Nik, M. (2009) “Edge distance effects on residual stress distribution around a cold expanded hole in Al 2024 alloy” Computational Materials Science, Vol. 45, PP. 1134-1141.

49) Ayatollahi, M.R., Aliha, M.R.M., (2009) “Analysis of a new specimen for mixed mode fracture tests on brittle materials” Engineering Fracture Mechanics, Vol. 76, PP. 1563-1573.

48) Ayatollahi, M.R., Aliha, M.R.M (2009) "Mixed-Mode Fracture in Soda-Lime glass Analyzed by Using the Generalized MTS Criterion" International Journal of Solids and Structures, Vol. 46, PP. 311-321.
 

2008

47) Aliha, M.R.M., Ayatollahi, M.R, Mousavi, M.M.S. (2008) "Confining pressure effects on stress intensity factors: A 3D finite element analysis" Revue Synthese, Vol. 19, PP. 33-39.

46) Ayatollahi, M.R. and Mousavi, M.M.S. (2008) "Confining pressure effects on mode I and mode II stress intensity factors of cracked rocks" Iranian Journal of Mining Engineering, Vol. 3, No 5, PP. 21-32.

45) Aliha, M.R.M., Ayatollahi, M.R, Pakzad, R. (2008) "Brittle fracture analysis using a ring shape specimen containing two angled cracks" International Journal of Fracture, Vol. 153 (1), PP. 63-68.

44) Ayatollahi, M.R. and Aliha, M.R.M. (2008) "On the use of Brazilian disc specimen for calculating mixed mode I-II fracture toughness of rock materials", Engineering Fracture Mechanics, Vol. 75, PP. 4631-4641.

43) Ayatollahi, M.R. and Aliha, M.R.M. (2008) "Mixed mode fracture analysis of polycrystalline graphite - A modified MTS criterion", Carbon, Vol. 46(10), PP. 1302-1308.

42) Aliha, M.R.M. and Ayatollahi M.R. (2008) "On mixed mode I/II crack growth in dental resin materials" Scripta Materialia, Vol. 59, PP. 258-261.

41) Ayatollahi, M.R. and Bagherifard, S. (2008) "Brittle fracture analysis of the offset-crack DCDC specimen" Structural Engineering and Mechanics, Vol. 29, No. 3, PP. 301-310.

40) Aliha, M.R.M. and Ayatollahi M.R. (2008) " Fracture toughness evaluation for brittle polymers under combined tensile-shear loads" Iranian Journal of Polymer Science and Technology, Vol. 21, No 2, PP. 107-117.

39) Ayatollahi, M.R., Rokhi, H. and Hashemi, R. (2008) "Free vibration of beam with double-sided edge cracks" International Journal of Science and Technology (Amirkabir), Vol. 18, PP. 51-48.
 

2007

38) Zakeri, M., Ayatollahi, M.R., and Nikoobin, A. (2007) “T-Stress Effects on Isochromatic Fringe Patterns in Mode II”, Computational Materials Science, Vol. 41, PP. 168-176.

37) Ayatollahi M.R. and Aliha M.R.M. and Rahmanian S. (2007) "Finite element analysis of an improved center crack specimen", Key Engineering Materials, Vol. 347, PP. 441-446.

36) Ayatollahi, M.R., and Zakeri, M. (2007) “T-Stress Effects on Isochromatic Fringe Patterns in Mode II”, International Journal of Fracture, Vol.143, PP. 189-194.

35) Ayatollahi, M.R., and Aliha, M.R.M. (2007) “Fracture toughness study for a brittle rock subjected to mixed mode I/II loading”, International Journal of Rock Mechanics and Mining Science, Vol.44, PP. 617-624.

34) Guagliano M., Ayatollahi M.R., Zakeri M. and Colombo C. (2007) "Experimental investigation of T-stress effects on photoelastic fringes in Brazilian disk under mode II conditions" Key Engineering Materials, Vol 348, PP. 969-972.

33) Khojeh, A., Ayatollahi, M.R. and Ahmadian H. (2007) “Vibrational analysis of cracked beams using a special crack element” IUST International Journal of Engineering Science, Vol.18, No 1, PP. 11-18. (in Farsi)

32) Ayatollahi M.R. and Hashemi, R. (2007) "Mixed mode fracture in an inclined center crack repaired by composite patching", Composite Structures, Vol. 81, PP. 264-273.

31) Ayatollahi M.R. and Hashemi R. (2007) “Computation of stress intensity factors (KI, KII) and T-stress for cracks reinforced by composite patching” Composite Structures, Vol. 78, PP. 602-609.

30) Ayatollahi M.R. and Aliha M.R.M. (2007) “Wide Range Data for Crack Tip Parameters in Two Disc-Type Specimens under Mixed Mode Loading” Computational Materials Science, Vol. 38, No 4, PP. 660-670.

29) Ayatollahi M.R. and Mostafavi M. (2007) “Finite element analysis of a center crack specimen warm pre-stressed under different modes of loading” Computational Materials Science, Vol. 38, No 4, PP. 847-856.
 

2006

28) Ayatollahi, M.R. and Aliniaziazi, A. (2006) "Effects of lateral load on warm pre-stressing in a center crack plate, Materials Science and Engineering – A, Vol. 441, PP. 170-175.

27) Hashemi, R. and Ayatollahi M.R. (2006) “The effect of hygrothermal composite patch on fracture strength of a reinforced crack” Applied Mechanics and Materials, Vol. 5-6, PP. 189-196.

26) Aliha M.R.M., Ashtari, R. and Ayatollahi M.R. (2006) “Mode I and Mode II fracture toughness testing for a coarse grain marble” Applied Mechanics and Materials, Vol. 5-6, PP. 181-188.

25) Ayatollahi M.R., Aliha M.R.M. and Hassani M.M. (2006) “Mixed mode brittle fracture in PMMA - An experimental study using SCB specimen” Materials Science and Engineering – A, Vol. 417, PP. 348-356.

24) Smith, D.J., Ayatollahi, M. R. and Pavier, M.J. (2006) “On the Consequences of T-stress in Elastic Brittle Fracture”, Proceedings of the Royal Society A, Vol. 462, PP. 2415-2437.

23) Ayatollahi M.R. and Mostafavi M. (2006) “Effects of Crack Tip Blunting and Residual Stress on a Warm Pre-Stressed Crack Specimen” Computational Materials Science, Vol. 37, PP. 393-400.

22) Ayatollahi, M.R., and Aliha, M.R.M. (2006) “On Determination of Mode II Fracture Toughness using Semi-circular Bend Specimen”, International Journal of Solids and Structures, Vol. 43, PP. 5217-5227.
 

2005

21) Ayatollahi, M.R., Asadkarami, A. and Zakeri, M. (2005) “Finite element evaluation of punch-type crack specimens” International Journal of Pressure Vessels and Piping, Vol. 82, PP. 722-728.

20) Ayatollahi, M.R., and Aliha, M.R.M. (2005) “Cracked Brazilian disc specimen subjected to mode II deformation” Engineering Fracture Mechanics, Vol. 72, PP. 493-503.

19) Asadkarami, A. and Ayatollahi, M.R. (2005) “E-shape specimen for determining fracture toughness in shear loading” IUST International Journal of Engineering Science, Vol. 16, No 4, PP. 11-20. (in Farsi)

18) Ayatollahi, M.R. and Zanbilbaf, A. (2005) “Path of crack growth under pure shear”, IUST International Journal of Engineering Science, Vol 16, No 2, PP. 75-83. (in Farsi)
 

2004

17) Ayatollahi, M.R., Faritus, M.R. and Asadkarami, A. (2004) “Three-dimensional stress analysis of two standard crack specimens” IUST International Journal of Engineering Science, Vol. 15, No. 4, PP. 97-102.

16) Ayatollahi, M.R., Smith, D.J. and Pavier, M.J. (2004) “Effect of constraint on the initiation of ductile fracture in shear loading” Key Engineering Materials, Vol. 261, PP. 183-188.

15) Ayatollahi, M.R., and Aliha, M.R.M. (2004) “Fracture Parameters for Cracked Semi-circular Specimen”, International Journal of Rock Mechanics and Mining Science, Vol. 41, Supplement 1, PP. 20-25.
 

2003 and earlier

14) Ayatollahi, M.R., Abbasi, H. (2003) “Crack growth prediction based on the maximum hoop strain criterion- Plane stress”, IUST International Journal of Engineering Science, Vol. 14, No. 4, PP. 123-137. (in Farsi)

13) Ayatollahi, M.R. and Safari, G.H. (2003) “Evaluation of crack tip constraint using photoelasticity”, International Journal of Pressure Vessels and Piping, Vol. 80, No. 9, PP. 665-670.

12) Ayatollahi, M.R., Pavier, M.J. and Smith, D.J. (2002) "Mode I cracks subjected to large T-stresses", International Journal of Fracture, Vol. 117, No 2, PP. 159-174.

11) Ayatollahi, M.R., Mohammad-Aliha, M.R., Aliniaziazi, A. (2002) “Variation of nonsingular stress parameter in terms of crack length”, IUST International Journal of Engineering Science, Vol 13, No 3, PP 173-186.

10) Ayatollahi, M.R., Smith, D.J. and Pavier, M.J. (2002) “Crack tip constraint in mode II deformation” International Journal of Fracture, Vol. 113, No 2, PP 153-173.

9) Ayatollahi, M.R. and Abbasi, H. (2001) “Prediction of fracture using a strain based mechanism of crack growth” Building Research Journal, Vol. 49, No 3, PP 167-180.

8) Ayatollahi, M.R., Smith, D.J. and Pavier M.J. (2001) “Effect of higher order stresses in an internal crack problem” IUST International Journal of Engineering Science, Vol. 12, No 2, PP 53-66.

7) Ayatollahi, M.R. (2001) “On biaxially loaded internal cracks” International Journal of Fracture, Vol. 109, PP. L9-L14.

6) Smith, D.J., Ayatollahi, M. R. and Pavier, M.J.(2001) “The role of T-stress in brittle fracture for linear elastic materials under mixed mode loading”, Fatigue and Fracture of Engineering Materials and Structures, Vol. 24, No 2, PP 137-150.

5) Ayatollahi, M.R., Pavier, M.J. and Smith, D.J. (1998) "Determination of T-stress from finite element analysis for mode I and mixed mode I/II loading", International Journal of Fracture, Vol. 91, PP 283-298.

4) Smith D.J., Ayatollahi, M.R., Davenport, J.C.W. and Swankie, T.D. (1998) "Mixed mode brittle and ductile fracture of a high strength rotor steel at room temperature", International Journal of Fracture, Vol. 94, PP 235-250.

3) Ayatollahi, M.R., Smith D.J. and Pavier, M.J. (1998) "A method for calculating T-stress for mixed mode problems", International Journal of Key Engineering Materials, Vol. 145, PP 83-88.

2) Ayatollahi, M.R., Pavier, M.J. and Smith, D.J. (1996) "On mixed mode loading of a single edge notched specimen", International Journal of Fracture, Vol. 82, PP R61-R66.

1) Eslami, M.R. and Ayatollahi, M.R., (1993) "Modal Analysis of Shell of Revolution on Elastic Foundation ", International Journal of Pressure Vessels and Piping, Vol. 56, PP 351-368.

 Publications - Conference Proceedings 

  More than 250 national and international conference papers by 2013

Research Laboratory

• Group Photo April 2023

• Fatigue and Fracture Research Laboratory

Courses Taught

• Strength of Materials I (Undergraduate)
• Fracture Mechanics (Graduate)
• Engineering Mechanics - Statics (Undergraduate)
• Computer Aided Machine Design (Undergraduate)
• Mechanical Behavior of Materials (Undergraduate)
• Strength of Materials Lab. (Undergraduate)
• Finite Element Methods (Graduate)
• Advanced Numerical Methods (Graduate)