World's Best Scientists 2026 revealed!
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Materials Science
Iran
2026
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Mechanical and Aerospace Engineering
Iran
2026

D-Index & Metrics

Mechanical and Aerospace Engineering

D-Index
83
Citations
22482
World Ranking
173
National Ranking
6

Materials Science

D-Index
82
Citations
20717
World Ranking
2505
National Ranking
4

Majid R. Ayatollahi publication distribution in Mechanical and Aerospace Engineering in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Mechanical and Aerospace Engineering in 2026. The highlighted bar marks where Majid R. Ayatollahi sits on this spectrum.

47–56 publications: 10 scientists 57–66 publications: 23 scientists 67–76 publications: 32 scientists 77–86 publications: 62 scientists 87–96 publications: 67 scientists 97–106 publications: 91 scientists 107–116 publications: 113 scientists 117–126 publications: 115 scientists 127–136 publications: 130 scientists 137–146 publications: 140 scientists 147–156 publications: 155 scientists 157–166 publications: 132 scientists 167–176 publications: 133 scientists 177–186 publications: 130 scientists 187–196 publications: 140 scientists 197–206 publications: 115 scientists 207–216 publications: 125 scientists 217–226 publications: 117 scientists 227–236 publications: 99 scientists 237–246 publications: 92 scientists 247–256 publications: 100 scientists 257–266 publications: 95 scientists 267–276 publications: 88 scientists 277–286 publications: 77 scientists 287–296 publications: 74 scientists 297–306 publications: 74 scientists 307–316 publications: 62 scientists 317–326 publications: 70 scientists 327–336 publications: 59 scientists 337–346 publications: 58 scientists 347–356 publications: 45 scientists 357–366 publications: 44 scientists 367–376 publications: 36 scientists 377–386 publications: 41 scientists 387–396 publications: 32 scientists 397–406 publications: 23 scientists 407–416 publications: 28 scientists 417–426 publications: 27 scientists 427–436 publications: 25 scientists 437–446 publications: 23 scientists 447–456 publications: 23 scientists 457–466 publications: 20 scientists 467–476 publications: 12 scientists 477–486 publications: 24 scientists 487–496 publications: 18 scientists 497–506 publications: 12 scientists 507–516 publications: 13 scientists 517–526 publications: 21 scientists 527–536 publications: 12 scientists 537–546 publications: 8 scientists 547–556 publications: 16 scientists 557–566 publications: 3 scientists 567–576 publications: 11 scientists 577–586 publications: 6 scientists 587–596 publications: 5 scientists 597–606 publications: 6 scientists 607–616 publications: 7 scientists 617–626 publications: 7 scientists 627–636 publications: 10 scientists 637–646 publications: 4 scientists 647–656 publications: 3 scientists 657–658 publications: 2 scientists 659+ publications: 100 scientists
47 publications 659+

This scientist: 455 publications — 91st percentile

91% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 659 publications or more.

Majid R. Ayatollahi D-index placement in Mechanical and Aerospace Engineering in 2026

The chart shows the D-index (discipline H-index) distribution of Mechanical and Aerospace Engineering scientists ranked by Research.com in 2026. The highlighted bar marks where Majid R. Ayatollahi sits on this spectrum.

30 D-Index: 83 scientists 31 D-Index: 113 scientists 32 D-Index: 144 scientists 33 D-Index: 153 scientists 34 D-Index: 189 scientists 35 D-Index: 158 scientists 36 D-Index: 139 scientists 37 D-Index: 127 scientists 38 D-Index: 130 scientists 39 D-Index: 126 scientists 40 D-Index: 104 scientists 41 D-Index: 100 scientists 42 D-Index: 107 scientists 43 D-Index: 101 scientists 44 D-Index: 103 scientists 45 D-Index: 79 scientists 46 D-Index: 88 scientists 47 D-Index: 70 scientists 48 D-Index: 83 scientists 49 D-Index: 44 scientists 50 D-Index: 64 scientists 51 D-Index: 56 scientists 52 D-Index: 50 scientists 53 D-Index: 48 scientists 54 D-Index: 58 scientists 55 D-Index: 52 scientists 56 D-Index: 48 scientists 57 D-Index: 42 scientists 58 D-Index: 34 scientists 59 D-Index: 42 scientists 60 D-Index: 37 scientists 61 D-Index: 42 scientists 62 D-Index: 44 scientists 63 D-Index: 22 scientists 64 D-Index: 33 scientists 65 D-Index: 29 scientists 66 D-Index: 23 scientists 67 D-Index: 29 scientists 68 D-Index: 24 scientists 69 D-Index: 19 scientists 70 D-Index: 34 scientists 71 D-Index: 26 scientists 72 D-Index: 19 scientists 73 D-Index: 18 scientists 74 D-Index: 19 scientists 75 D-Index: 14 scientists 76 D-Index: 19 scientists 77 D-Index: 8 scientists 78 D-Index: 18 scientists 79 D-Index: 16 scientists 80 D-Index: 12 scientists 81 D-Index: 17 scientists 82 D-Index: 11 scientists 83 D-Index: 16 scientists 84 D-Index: 7 scientists 85 D-Index: 9 scientists 86 D-Index: 8 scientists 87 D-Index: 6 scientists 88 D-Index: 6 scientists 89 D-Index: 7 scientists 90 D-Index: 10 scientists 91 D-Index: 4 scientists 92 D-Index: 4 scientists 93+ D-Index: 100 scientists
30 D-Index 93+

This scientist: 83 D-Index — 95th percentile

95% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 93 D-Index or more.

Research.com Recognitions

  • 2026 - Research.com Materials Science in Iran Leader Award
  • 2026 - Research.com Mechanical and Aerospace Engineering in Iran Leader Award
  • 2025 - Research.com Materials Science in Iran Leader Award
  • 2025 - Research.com Mechanical and Aerospace Engineering in Iran Leader Award
  • 2023 - Research.com Materials Science in Iran Leader Award
  • 2023 - Research.com Mechanical and Aerospace Engineering in Iran Leader Award
  • 2022 - Research.com Materials Science in Iran Leader Award
  • 2022 - Research.com Mechanical and Aerospace Engineering in Iran Leader Award

Overview

What is he best known for?

The fields of study he is best known for:

  • Composite material
  • Geometry
  • Structural engineering

His primary areas of investigation include Composite material, Fracture, Fracture toughness, Mode and Brittle fracture. In his study, Compression is inextricably linked to Edge, which falls within the broad field of Composite material. His research in Fracture intersects with topics in Structural engineering, Mode coupling, Rock mechanics and Mixed mode fracture.

His Fracture toughness research is multidisciplinary, incorporating perspectives in Stress, Fracture mechanics, Stress intensity factor, Shear and Toughness. Majid R. Ayatollahi interconnects Deformation, Graphite, Polycrystalline graphite and Strain energy density function in the investigation of issues within Brittle fracture. His research investigates the link between Mixed mode and topics such as Flexural strength that cross with problems in Polymethyl methacrylate.

His most cited work include:

  • The role of T-stress in brittle fracture for linear elastic materials under mixed-mode loading (376 citations)
  • ISRM-Suggested Method for Determining the Mode I Static Fracture Toughness Using Semi-Circular Bend Specimen (226 citations)
  • Geometry and size effects on fracture trajectory in a limestone rock under mixed mode loading (203 citations)

What are the main themes of his work throughout his whole career to date?

Majid R. Ayatollahi mainly investigates Composite material, Fracture, Finite element method, Fracture toughness and Structural engineering. His study in the fields of Fracture mechanics, Mixed mode, Brittleness and Stress intensity factor under the domain of Composite material overlaps with other disciplines such as Mode. His Fracture research includes elements of Stress, Tangential stress, Edge and Strain energy density function.

Majid R. Ayatollahi focuses mostly in the field of Finite element method, narrowing it down to matters related to Mathematical analysis and, in some cases, Displacement field. Majid R. Ayatollahi works mostly in the field of Fracture toughness, limiting it down to topics relating to Epoxy and, in certain cases, Carbon nanotube. His Structural engineering research incorporates elements of Mode coupling and Stress concentration.

He most often published in these fields:

  • Composite material (71.16%)
  • Fracture (41.01%)
  • Finite element method (29.10%)

What were the highlights of his more recent work (between 2019-2021)?

  • Composite material (71.16%)
  • Fracture (41.01%)
  • Finite element method (29.10%)

In recent papers he was focusing on the following fields of study:

His scientific interests lie mostly in Composite material, Fracture, Finite element method, Adhesive and Fracture mechanics. Borrowing concepts from Mode, Majid R. Ayatollahi weaves in ideas under Composite material. The Fracture study combines topics in areas such as Asphalt, Stress, Mechanics and Strain energy density function.

His biological study spans a wide range of topics, including Bending, Mathematical analysis and Anisotropy. His work is dedicated to discovering how Adhesive, Digital image correlation are connected with Edge, Cantilever and Flexural rigidity and other disciplines. His Fracture mechanics research is multidisciplinary, relying on both Tangential strain, Extended finite element method and Strain energy.

Between 2019 and 2021, his most popular works were:

  • Application of digital image correlation method for determination of mixed mode stress intensity factors in sharp notches (10 citations)
  • Strength improvement of adhesively bonded single lap joints with date palm fibers: Effect of type, size, treatment method and density of fibers (9 citations)
  • Elastic stress analysis of blunt V-notches under mixed mode loading by considering higher order terms (9 citations)

In his most recent research, the most cited papers focused on:

  • Composite material
  • Geometry
  • Finite element method

His primary areas of study are Composite material, Finite element method, Fracture, Fracture toughness and Anisotropy. His study in Ultimate tensile strength, Adhesive, Bending, Fracture mechanics and Composite number falls under the purview of Composite material. His Finite element method research is multidisciplinary, incorporating elements of Yield and Mathematical analysis.

His work deals with themes such as Stress field and Stress, which intersect with Mathematical analysis. His Fracture research incorporates themes from Mechanical engineering, Rapid prototyping, Process and Dynamic loading. His Fracture toughness research spans across into subjects like Mode, Type and Range.

Best Publications

  • ISRM-Suggested Method for Determining the Mode I Static Fracture Toughness Using Semi-Circular Bend Specimen

    Mahinda Kuruppu;Yuzo Obara;Majid Ayatollahi;Ken Chong;Ken Chong

  • The role of T-stress in brittle fracture for linear elastic materials under mixed-mode loading

    D. J. Smith;M. R. Ayatollahi;M. J. Pavier

  • 45th US Rock Mechanics / Geomechanics Symposium

    M. R M Aliha;M. R. Ayatollahi;D. J. Smith;Martyn J Pavier

  • Geometry and size effects on fracture trajectory in a limestone rock under mixed mode loading

    M.R.M. Aliha;M.R.M. Aliha;M.R. Ayatollahi;D.J. Smith;M.J. Pavier

  • Wide range data for crack tip parameters in two disc-type specimens under mixed mode loading

    M.R. Ayatollahi;M.R.M. Aliha

  • Mixed mode brittle fracture in PMMA—An experimental study using SCB specimens

    M.R. Ayatollahi;M.R.M. Aliha;M.M. Hassani

  • On the use of Brazilian disc specimen for calculating mixed mode I–II fracture toughness of rock materials

    M.R. Ayatollahi;M.R.M. Aliha

  • Effect of multi-walled carbon nanotube aspect ratio on mechanical and electrical properties of epoxy-based nanocomposites

    M.R. Ayatollahi;S. Shadlou;M.M. Shokrieh;M. Chitsazzadeh

  • An improved semi-circular bend specimen for investigating mixed mode brittle fracture

    M.R. Ayatollahi;M.R.M. Aliha;H. Saghafi

  • Fracture toughness study for a brittle rock subjected to mixed mode I/II loading

    M.R. Ayatollahi;M.R.M. Aliha

  • Determination of T-stress from finite element analysis for mode I and mixed mode I/II loading

    M.R. Ayatollahi;M.J. Pavier;D.J. Smith

  • Analysis of a new specimen for mixed mode fracture tests on brittle materials

    M.R. Ayatollahi;M.R.M. Aliha

  • Mixed mode fracture resistance of asphalt concrete mixtures

    M. Ameri;A. Mansourian;S. Pirmohammad;M.R.M. Aliha

  • Cracked asphalt pavement under traffic loading – A 3D finite element analysis

    M. Ameri;A. Mansourian;M. Heidary Khavas;M.R.M. Aliha

  • An over‐deterministic method for calculation of coefficients of crack tip asymptotic field from finite element analysis

    M. R. Ayatollahi;M. Nejati

  • Application of Cracked Triangular Specimen Subjected to Three-Point Bending for Investigating Fracture Behavior of Rock Materials

    M R M Aliha;G H R Hosseinpour;M R Ayatollahi

  • Brittle fracture in rounded-tip V-shaped notches

    M.R. Ayatollahi;A.R. Torabi

  • Fracture toughness of epoxy/multi-walled carbon nanotube nano-composites under bending and shear loading conditions

    M.R. Ayatollahi;S. Shadlou;M.M. Shokrieh

  • Size-dependent fracture behavior of Guiting limestone under mixed mode loading

    J. Akbardoost;M. R. Ayatollahi;M. R M Aliha;M. R M Aliha;Martyn J Pavier

  • Rock fracture toughness study using cracked chevron notched Brazilian disc specimen under pure modes I and II loading – A statistical approach

    M.R.M. Aliha;M.R. Ayatollahi

  • Typical Upper Bound–Lower Bound Mixed Mode Fracture Resistance Envelopes for Rock Material

    M. R. M. Aliha;M. R. Ayatollahi;J. Akbardoost

Frequent Co-Authors

Filippo Berto
Filippo Berto Sapienza University of Rome
M.R.M. Aliha
M.R.M. Aliha Iran University of Science and Technology
A.R. Torabi
A.R. Torabi University of Tehran
Mahmood M. Shokrieh
Mahmood M. Shokrieh Iran University of Science and Technology
Martyn J Pavier
Martyn J Pavier University of Bristol
L.F.M. da Silva
L.F.M. da Silva University of Porto
Paolo Lazzarin
Paolo Lazzarin University of Padua
Liviu Marsavina
Liviu Marsavina Polytechnic University of Timişoara
Mario Guagliano
Mario Guagliano Polytechnic University of Milan
Sara Bagherifard
Sara Bagherifard Polytechnic University of Milan

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