LAMPA

Auffray M, Morel F, Gallegos Mayorga L, Pessard E, Baffie T, Merot P et al.

Prevailing effect of residual stresses and defects on the fatigue strength of net-shape parts produced with Laser Powder Bed Fusion (L-PBF) 316L stainless steel.

Laser Powder Bed Fusion (L-PBF) additive manufacturing enables the production of complex-shaped parts with high mechanical resistance. Such components exhibit a multi-scale microstructure, internal, sub-surface, and surface defects, a rough surface finish and a residual stress gradient in the as-bui…

International Journal of Fatigue. 2025;201:109107.

DOI : 10.1016/j.ijfatigue.2025.109107

Merot P, Morel F, Robert C, Pessard E, Gallegos Mayorga L, Buttin P.

https://www.sciencedirect.com/science/article/pii/S0167844224001277?via%3Dihub

Non local multiaxial fatigue modeling of defects: A unified approach to interpret size and shape effects.

This paper deals with the effect of defect size and shape under high cycle fatigue for metallic alloys. A large simulation campaign based on a multiaxial fatigue criterion and a non-local approach is presented. A relative defect size based on a ratio between the defect size and a characteristic leng…

Theoretical and Applied Fracture Mechanics. 2024;131:104378.

DOI : 10.1016/j.tafmec.2024.104378

Pouliquen A, Chanfreau N, Gallegos Mayorga L, Mareau C, Ayed Y, Germain G et al.

Influence of the microstructure of a Ti5553 titanium alloy on chip morphology and cutting forces during orthogonal cutting.

Titanium alloys, largely used for aeronautical applications, are difficult to machine. High cutting forces, chip serration and important tool wear reflect this poor machinability, limiting productivity. One way of improving the machinability of titanium alloys consists of controlling their microstru…

Journal of Materials Processing Technology. 2023;319:118054.

DOI : 10.1016/j.jmatprotec.2023.118054

Sela A, Ortiz-De-Zarate G, Soler D, Germain G, Gallegos Mayorga L, Arrazola P.

Adiabatic self-heating determination for Ti6Al4V at different temperatures.

Nowadays, numerical models are one of the most widely used techniques to predict material performance subjected to different manufacturing processes. However, to obtain accurate predictions, these models require reliable input data from thermomechanical tests. Nevertheless, during the test performan…

International Journal of Heat and Mass Transfer. 2023;204

DOI : 10.1016/j.ijheatmasstransfer.2022.123747

Pouliquen A, Mareau C, Gallegos Mayorga L, Ayed Y, Germain G.

Etude expérimentale de la relation entre la morphologie du copeau et la réponse mécanique en coupe orthogonale.

2022..

Merot P, Morel F, Pessard E, Gallegos Mayorga L, Buttin P, Baffie T.

Fatigue strength and life assessment of L-PBF 316L stainless steel showing process and corrosion related defects.

The present work focuses on the modelling of the fatigue behaviour of a 316L produced by laser powder bed fusion containing various defect populations : Lacks of fusion, corrosion pits and one electric discharge machined hemispherical defect. As shown in previous experimental studies, the crack lead…

Engineering Fracture Mechanics. 2022;276(B):17.

DOI : 10.1016/j.engfracmech.2022.108883

Merot P, Morel F, Gallegos Mayorga L, Pessard E, Buttin P, Baffie T.

Observations on the influence of process and corrosion related defects on the fatigue strength of 316L stainless steel manufactured by Laser Powder Bed Fusion (L-PBF).

Corrosive environments are known to be detrimental to the mechanical strength of metallic alloys. In the case of 316L stainless steel, the main corrosion mechanism observed is pitting, which leads to localized rough defects. As for other materials submitted to cyclic loadings and prone to pit, corro…

International Journal of Fatigue. 2021;155:106552.

DOI : 10.1016/j.ijfatigue.2021.106552

Gallegos Mayorga L, Sire S, Correia J, de Jesus A, Rebelo C, Fernández-Canteli A et al.

Statistical evaluation of fatigue strength of double shear riveted connections and crack growth rates of materials from old bridges.

Engineering Fracture Mechanics. 2017;185:241-257.

DOI : 10.1016/j.engfracmech.2017.05.039

Gallegos Mayorga L, Sire S, Ragueneau M, Plu B.

Understanding the behaviour of wrought-iron riveted assemblies: manufacture and testing in France.

Proceedings of the Institution of Civil Engineers - Engineering History and Heritage. 2017;170(2):67-79.

DOI : 10.1680/jenhh.16.00020

Gallegos Mayorga L, Sire S, Plu B.

Experimental investigation on hot riveted double shear connections, a friction analysis.

2016;1332–1337.

DOI : 10.1201/9781315616995-197

Gallegos Mayorga L, Sire S, Correia J, de Jesus A, Valente I, Rebelo C et al.

Design S-N Curves for old Portuguese and French riveted bridges connection based on statistical analyses.

Procedia Engineering. 2016;160:77-84.

DOI : 10.1016/j.proeng.2016.08.865

Gallegos Mayorga L.

Contribution à la compréhension du comportement mécanique des assemblages rivetés anciens.

Le patrimoine ferroviaire français comporte de nombreux ponts métalliques, principalement construits au cours de la seconde moitié du XIXème siècle. Ces ouvrages d'art sont donc en service depuis plus d’un siècle et nécessitent une politique de maintenance adaptée. En collaboration avec SNCF Réseau,…

2016..

Sire S, Gallegos Mayorga L.

France : protection patrimoniale des ponts métalliques.

2016;

Sire S, Gallegos Mayorga L, Plu B.

Observation of failure scenarios in riveted assemblies: an innovative experimental strategy.

Hot riveting was largely used as method of assembly in France during the appearing and expansion of the railway network (1840-1940). Present in wrought iron and steel constructions, riveted connections are commonly found in the French railway heritage. Conceived as a permanent assembly, these connec…

Procedia Engineering. 2015;114:430-436.

DOI : 10.1016/j.proeng.2015.08.089

Gallegos Mayorga L, Sire S, Plu B.

Understanding fatigue mechanisms in ancient metallic railway bridges: a microscopic study of puddled iron.

Being the second oldest railway network in Europe, almost half of the metallic railway bridges in France were built before the 1900s. At the time, puddled iron was the building material of preference amongst most engineers, hot riveting was the preferred joining method. Considering the ageing of the…

Procedia Engineering. 2015;114:422-429.

DOI : 10.1016/j.proeng.2015.08.088

Gallegos Mayorga L, Sire S, Calloch S, Yang S, Dieleman L, Martin J.

A self-heating approach to characterize anisotropy effects in fatigue behaviour: application to a nineteenth century puddle iron from a French railway bridge.

2014..

Gallegos Mayorga L, Sire S, Calloch S, Yang S, Dieleman L, Martin J.

A self-heating approach to characterize anisotropy effects in fatigue behaviour: application to a nineteenth century puddled iron from a French railway bridge.

Advanced Materials Research. 2014;891-892:136-142.

DOI : 10.4028/www.scientific.net/AMR.891-892.136

Gallegos Mayorga L, Sire S, Calloch S, Yang S, Dieleman L, Martin J.

Fast fatigue characterization of metallic materials from ancient French railway bridges: a comparative study.

2013;id45.