I’m interested in the mechanical properties of the fatigue contact damage zone, which is the first millimeter depth in the surface layer of any case hardened component, particularly the gears. So, my interests are in the measurement of residual stresses and retained austenite in hardened layers (carburising and nitriding heat treatments, with or without sub-zero treating), in the determination of the mechanical properties of the hardened layers, in the bearings and gears type of materials, in the surface super-finishing, in the tooth wear of a gear, in the influence of the addendum modification coefficient, etc.

Research Highlights

X-ray Diffraction Residual Stress Measurements for Assessment of Rolling Contact Fatigue Behaviour of Railway Steels
A.C. Batista, J.P. Nobre, D.F.C. Peixoto, L.A.A. Ferreira, P.M.S.T. de Castro, L. Coelho
Advanced Materials Research 996, 782-787 (2014)
Evaluation of Residual Stresses Induced by Ultra-high-Speed Drilling in Aluminium alloys
J.P. Nobre, R. Guimarães, A.C. Batista, M.J. Marques, L. Coelho, A. Nau, B. Scholtes
Materials Science Forum 768-769, 128-135 (2014)
Wear and surface residual stress evolution on twin-disc tests of rail/wheel steels
A.C. Batista, D.F.C. Peixoto, J.P. Nobre, L. Coelho, D.M. Ramos, L.A.A. Ferreira, P.M.S.T. de Castro,
Materials Science Forum 768-769, 707-713 (2014)
Residual Stresses Profiles of Cladded Austenitic Stainless Steel Evaluated by X-Ray Diffraction and by Incremental Hole-Drilling Method
M.J. Marques, A.C. Batista, L. Coelho, J.P. Nobre, A. Loureiro
Materials Science Forum 768-769, 464-469 (2014)

Publications [LaTeX]

Papers

International Journals

1 - Rolling and Rolling-Sliding Contact Fatigue Failure Mechanisms in 32 CrMoV 13 Nitrided Steel—An Experimental Study
Coelho, L., Batista, A.C., Nobre, J.P., Marques, M.J.
Applied Sciences 11, 10499, 1-14 (2021)

2 - Quinolone-Hydroxyquinoline Tautomerism in Quinolone 3-Esters. Preserving the 4-Oxoquinoline Structure To Retain Antimalarial Activity
P Horta, N Kus, MSC Henriques, JA Paixao, L Coelho, F Nogueira, PM O´Neill
J. Org. Chem. 80(24), 12244-12257 (2015)

3 - Wear and surface residual stress evolution on twin-disc tests of rail/wheel steels
A.C. Batista, D.F.C. Peixoto, J.P. Nobre, L. Coelho, D.M. Ramos, L.A.A. Ferreira, P.M.S.T. de Castro,
Materials Science Forum 768-769, 707-713 (2014)

4 - X-ray Diffraction Residual Stress Measurements for Assessment of Rolling Contact Fatigue Behaviour of Railway Steels
A.C. Batista, J.P. Nobre, D.F.C. Peixoto, L.A.A. Ferreira, P.M.S.T. de Castro, L. Coelho
Advanced Materials Research 996, 782-787 (2014)

5 - Assessing shot-peening residual stresses by using the incremental hole-drilling technique and laser interferometry (DSPI)
J. P. Nobre, M. Oliveira, A. Albertazzi, M. Viotti, A.C. Batista, L. Coelho, M. J. Marques
Advanced Materials Research 996, 269-276 (2014)

6 - Evaluation of Residual Stresses Induced by Ultra-high-Speed Drilling in Aluminium alloys
J.P. Nobre, R. Guimarães, A.C. Batista, M.J. Marques, L. Coelho, A. Nau, B. Scholtes
Materials Science Forum 768-769, 128-135 (2014)

7 - Residual Stresses Profiles of Cladded Austenitic Stainless Steel Evaluated by X-Ray Diffraction and by Incremental Hole-Drilling Method
M.J. Marques, A.C. Batista, L. Coelho, J.P. Nobre, A. Loureiro
Materials Science Forum 768-769, 464-469 (2014)

8 - Evaluation of Stress-Strain Behaviour of Surface Treated Steels by X-ray Diffraction
L. Coelho, A. C. Batista, J. P. Nobre, M. J. Marques
Central European Journal of Engineering 2(1), 91-95 (2012)

9 - Evaluation of Stress-Strain Behavior of Surface Treated Steels by X-ray Diffraction
L. Coelho, A.C. Batista, J.P. Nobre, M.J. Marques
Central European Journal of Engineering 2(1), 91-95 (2012)

Proceedings

International Conferences

10 - TBL PLUS in Vehicle Production Technologies
L. Coelho, M. L. Alves
ICERI2023 Proceedings, 3378-3384 (2023)

11 - Evaluation of Stress-Strain Behavior of Surface Treated Steels by X-ray Diffraction
L. Coelho, A. C. Batista, J. P. Nobre, M. J. Marques
Proc. of the European Conference on X Ray Spectrometry (EXRS 2010) (2010)

12 - Propriedades Mecânicas e Tribológicas de Revestimentos de WC-Co obtidos por Projecção Térmica APS e HVOF
J. Pina, M. J. Marques, L. Coelho, A. M. Dias, A. Gonçalves, J. L. Lebrun, R. J. Gras
Actas do XIII Congresso Brasileiro e II Congresso Ibero Americano de Engenharia Mecânica (XIII COBEM/II CIDIM) XIII Congresso Brasileiro e II Congresso Ibero Americano de Engenharia Mecânica (XIII COBEM/II CIDIM) ed. Associação Brasileira de Ciências Mecânicas, Belo Horizonte, Brasil publicação em CD-ROM (1995)

Communications

Oral

13 - TBL PLUS in Vehicle Production Technologies
L. Coelho, M. L. Alves
16th annual International Conference of Education, Research and Innovation, ICERI2023 Proceedings, 13-15 November, 2023, Seville, Spain. (2023)

14 - Residual stresses evaluation by X-ray diffraction and incremental hole drilling in AISI 316L and AISI 18Ni300 samples produced by Selective Laser Melting
M.J. Marques, A.C. Batista, J.P. Nobre, L. Coelho, A.M.P. de Jesus
11th International Conference on Residual Stresses (ICRS11) March 27-30, 2022, Nancy, France. (2022)

15 - Assessing shot-peening residual stresses by using the incremental hole drilling technique and laser interferometry (DSPI)
J.P. Nobre, M. Oliveira, A. Albertazzi, M. Viotti, A.C. Batista, L. Coelho, Maria José Marques
9th European Conference on Residual Stresses, ECRS-9, July 7-10, 2014, Troyes, França (2014)

16 - Propriedades Mecânicas e Tribológicas de Revestimentos de WC-Co obtidos por Projecção Térmica APS e HVOF
J. Pina, M. J. Marques, L. Coelho, A. M. Dias, A. Gonçalves, J. L. Lebrun, R. J. Gras
XIII Congresso Brasileiro e II Congresso Ibero Americano de Engenharia Mecânica (XIII COBEM/II CIDIM), 12-15 Dezembro, 1995, Belo Horizonte, Brasil. (1995)