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D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Mechanical and Aerospace Engineering 56 850 778 47 40 318 11166

Roger Lewis publications per year

The chart shows the history of publications by Roger Lewis between 1995 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Roger Lewis published across 31 years, from 1995 to 2025, averaging 13.7 papers a year. Output peaked at 34 publications in 2023. 61 of the 424 publications appeared in the last two years.

No. of publications
10 20 30
Bar chart. Horizontal axis: year, 1995 to 2025. Vertical axis: number of publications, 0 to 34. Peak 34 publications in 2023. 1995: 1 publication 1996: 0 publications 1997: 0 publications 1998: 0 publications 1999: 1 publication 2000: 0 publications 2001: 2 publications 2002: 3 publications 2003: 8 publications 2004: 7 publications 2005: 8 publications 2006: 15 publications 2007: 11 publications 2008: 12 publications 2009: 13 publications 2010: 11 publications 2011: 17 publications 2012: 11 publications 2013: 9 publications 2014: 13 publications 2015: 13 publications 2016: 22 publications 2017: 27 publications 2018: 24 publications 2019: 24 publications 2020: 30 publications 2021: 29 publications 2022: 18 publications 2023: 34 publications 2024: 31 publications 2025: 30 publications
1995 2025

424 publications in total across all disciplines

View publications per year as a table
Roger Lewis: publications per year, 1995 to 2025
Year Publications
1995 1
1996 0
1997 0
1998 0
1999 1
2000 0
2001 2
2002 3
2003 8
2004 7
2005 8
2006 15
2007 11
2008 12
2009 13
2010 11
2011 17
2012 11
2013 9
2014 13
2015 13
2016 22
2017 27
2018 24
2019 24
2020 30
2021 29
2022 18
2023 34
2024 31
2025 30
Total 424
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Roger Lewis 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 Roger Lewis sits on this spectrum.

No. of scientists
50 100 150
Bar chart with 63 bars. Horizontal axis: publications, 47–56 to 659+. Vertical axis: number of scientists, 0 to 155. Most scientists, 155, have 147–156 publications. The last bar groups every scientist with 659 publications or more. The highlighted bar, 317–326 publications, is where this scientist sits. 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
47–56 publications 659+

This scientist: 318 publications — 76th percentile

76% of scientists in this discipline score the same or lower.

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

View publications distribution as a table
Number of Mechanical and Aerospace Engineering scientists by publication count, Research.com 2026 ranking edition. Based on 3,445 ranked scientists.
Publications Scientists This scientist
47–56 10
57–66 23
67–76 32
77–86 62
87–96 67
97–106 91
107–116 113
117–126 115
127–136 130
137–146 140
147–156 155
157–166 132
167–176 133
177–186 130
187–196 140
197–206 115
207–216 125
217–226 117
227–236 99
237–246 92
247–256 100
257–266 95
267–276 88
277–286 77
287–296 74
297–306 74
307–316 62
317–326 70 318
327–336 59
337–346 58
347–356 45
357–366 44
367–376 36
377–386 41
387–396 32
397–406 23
407–416 28
417–426 27
427–436 25
437–446 23
447–456 23
457–466 20
467–476 12
477–486 24
487–496 18
497–506 12
507–516 13
517–526 21
527–536 12
537–546 8
547–556 16
557–566 3
567–576 11
577–586 6
587–596 5
597–606 6
607–616 7
617–626 7
627–636 10
637–646 4
647–656 3
657–658 2
659+ 100
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Roger Lewis 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 Roger Lewis sits on this spectrum.

No. of scientists
50 100 150
Bar chart with 64 bars. Horizontal axis: D-Index, 30 to 93+. Vertical axis: number of scientists, 0 to 189. Most scientists, 189, have 34 D-Index. The last bar groups every scientist with 93 D-Index or more. The highlighted bar, 56 D-Index, is where this scientist sits. 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: 56 D-Index — 76th percentile

76% of scientists in this discipline score the same or lower.

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

View D-Index distribution as a table
Number of Mechanical and Aerospace Engineering scientists by D-index, Research.com 2026 ranking edition. Based on 3,445 ranked scientists.
D-Index Scientists This scientist
30 83
31 113
32 144
33 153
34 189
35 158
36 139
37 127
38 130
39 126
40 104
41 100
42 107
43 101
44 103
45 79
46 88
47 70
48 83
49 44
50 64
51 56
52 50
53 48
54 58
55 52
56 48 56
57 42
58 34
59 42
60 37
61 42
62 44
63 22
64 33
65 29
66 23
67 29
68 24
69 19
70 34
71 26
72 19
73 18
74 19
75 14
76 19
77 8
78 18
79 16
80 12
81 17
82 11
83 16
84 7
85 9
86 8
87 6
88 6
89 7
90 10
91 4
92 4
93+ 100
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Overview

Roger Lewis is affiliated with the University of Sheffield in the United Kingdom. Their research primarily spans the field of Engineering, with a strong focus on Mechanical Engineering and its related subfields such as Mechanics of Materials, Materials Chemistry, Civil and Structural Engineering, and Automotive Engineering.

Their scholarly work extensively covers several key topics including:

  • Railway Engineering and Dynamics
  • Adhesion, Friction, and Surface Interactions
  • Mechanical stress and fatigue analysis
  • Metal Alloys Wear and Properties
  • Gear and Bearing Dynamics Analysis
  • Tribology and Wear Analysis
  • Tunneling and Rock Mechanics

Roger Lewis has contributed consistently to several publication venues. The most frequent include:

  • Wear
  • Proceedings of the Institution of Mechanical Engineers Part F Journal of Rail and Rapid Transit
  • Tribology International
  • SSRN Electronic Journal
  • Zenodo (CERN European Organization for Nuclear Research)

Several recent papers authored or co-authored by Lewis reflect the focus on railway materials and wear mechanisms. These include:

  • Microstructure evolution of railway pearlitic wheel steels under rolling-sliding contact loading, 2020, Tribology International
  • Comparison of wear and rolling contact fatigue behaviours of bainitic and pearlitic rails under various rolling-sliding conditions, 2020, Wear
  • Experimental study on wear properties of wheel and rail materials with different hardness values, 2021, Wear
  • Numerical calculation of wear in rolling contact based on the Archard equation: Effect of contact parameters and consideration of uncertainties, 2021, Wear
  • Wear and rolling contact fatigue competition mechanism of different types of rail steels under various slip ratios, 2023, Wear

Roger Lewis frequently collaborates with notable researchers in the field. Among these co-authors are Klaus Six, Haohao Ding, William A. Skipper, Bettina Suhr, and Enrico Meli, highlighting a network of active partnerships in their research domain.

Best Publications

  • A mathematical model to predict railway wheel profile evolution due to wear

    F. Braghin;R. Lewis;R.S. Dwyer-Joyce;S. Bruni

  • Wheel-Rail Interface Handbook

    Roger Lewis;Ulf Olofsson

  • Mapping rail wear regimes and transitions

    R. Lewis;Ulf Olofsson

  • Twin disc assessment of wheel/rail adhesion

    E.A. Gallardo-Hernandez;R. Lewis

  • In vivo measurement of skin surface strain and sub-surface layer deformation induced by natural tissue stretching.

    Raman Maiti;Lutz Christian Gerhardt;Zing S. Lee;Robert A. Byers

  • Development of a wear prediction tool for steel railway wheels using three alternative wear functions

    João Pombo;Jorge Ambrósio;Manuel Pereira;Roger Lewis

  • Assessment of laser cladding as an option for repairing/enhancing rails

    S.R. Lewis;R. Lewis;D.I. Fletcher

  • Microstructure evolution of railway pearlitic wheel steels under rolling-sliding contact loading

    Y. Hu;Y. Hu;L. Zhou;H.H. Ding;R. Lewis

  • Characterisation of Contact Pressure Distribution in Bolted Joints

    M. B. Marshall;R. Lewis;R. S. Dwyer-Joyce

  • Rolling–sliding laboratory tests of friction modifiers in dry and wet wheel–rail contacts

    O. Arias-Cuevas;Z. Li;R. Lewis;E.A. Gallardo-Hernández

  • Understanding the friction mechanisms between the human finger and flat contacting surfaces in moist conditions

    S. E. Tomlinson;R. Lewis;X. Liu;C. Texier

  • A laboratory investigation on the influence of the particle size and slip during sanding on the adhesion and wear in the wheel–rail contact

    Oscar Arias-Cuevas;Zili Li;Roger Lewis

  • Investigation on wear and rolling contact fatigue of wheel-rail materials under various wheel/rail hardness ratio and creepage conditions

    Y. Hu;L. Zhou;H.H. Ding;G.X. Tan

  • The effects of soot-contaminated engine oil on wear and friction: A review:

    D A Green;R Lewis

  • The effect of normal force and roughness on friction in human finger contact

    S.E. Tomlinson;R. Lewis;M.J. Carré

  • Wear and damage transitions of wheel and rail materials under various contact conditions

    W.J. Wang;W.J. Wang;R. Lewis;B. Yang;L.C. Guo

  • Food for Thought? — A UK pilot study testing a methodology for compositional domestic food waste analysis:

    Joseph Langley;Alaster Yoxall;Geoff Heppell;Elena Maria Rodriguez

  • Wear of human teeth: A tribological perspective

    R Lewis;R. S. Dwyer-Joyce

  • Mapping railway wheel material wear mechanisms and transitions

    Roger Lewis;Rob Dwyer-Joyce;Ulf Olofsson;Joao Pombo

  • Wear at the wheel/rail interface when sanding is used to increase adhesion

    R Lewis;R S Dwyer-Joyce

  • Characterising pressure and bruising in apple fruit

    R. Lewis;Alaster Yoxall;M. Marshall;L. Canty

Frequent Co-Authors

Rob Dwyer-Joyce
Rob Dwyer-Joyce University of Sheffield
Ulf Olofsson
Ulf Olofsson Royal Institute of Technology
Zili Li
Zili Li Delft University of Technology
Joao Pombo
Joao Pombo University of Huddersfield
Jorge Ambrósio
Jorge Ambrósio Instituto Superior Técnico
Sheila MacNeil
Sheila MacNeil University of Sheffield
Bruce W. Drinkwater
Bruce W. Drinkwater University of Bristol
Francesco Braghin
Francesco Braghin Polytechnic University of Milan
Anne Neville
Anne Neville University of Leeds
Robert G. Hill
Robert G. Hill Queen Mary University of London

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