Publication
A parametric neutron Bragg edge imaging study of additively manufactured samples treated by laser shock peening
Publications associées (32)
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Residual stresses in hot-rolled wide flange steel cross sections may lead to premature yielding, accelerated corrosion and brittle fracture of steel members. The above phenomena lead to a loss of a steel member's stiffness and resistance under mechanical l ...
2023Database of Residual Stress Measurements on Hot-rolled Wide Flange Steel Cross Sections
Dimitrios Lignos, Albano António De Abreu E Presa De Castro E Sousa, Andronikos Skiadopoulos
Data_info.csv: Database of 'Residual Stress Measurements on Hot-rolled Wide Flange Steel Cross Sections' including cross-sectional and material characteristics as well as information relevant to ploting the residual stress distributions. Distributions.zip: ...
Zenodo2023Laser powder-bed fusion of metallic alloys with enhanced microstructures and properties
Laser powder-bed fusion (LPBF) is an additive manufacturing (AM) process that uses a laser to selectively melt a powder bed. This process can build dense samples with complicated geometries from a wide variety of metallic alloys. In this thesis, LPBF of al ...
EPFL2021Investigation of residual stresses in planar dissimilar magnetic pulse welds by neutron diffraction
Residual stresses are investigated for the first time in a dissimilar AA1050-DP450 steel magnetic pulse weld using neutron diffraction. Close to the joint interface, tensile residual stresses are observed in the Al sheet and compressive residual stresses a ...
ELSEVIER SCI LTD2021Investigation of the effect of Laser Shock Peening in Additively Manufactured samples through Bragg Edge Neutron Imaging
Roland Logé, Markus Strobl, Nikola Kalentics
Additive manufacturing is a promising and rapidly rising technology in metal processing. However, besides a number of key advantages the constitution of a part through a complex thermo-mechanical process implies also some severe issues with the potential o ...
ELSEVIER20203D laser shock peening - A new method for improving fatigue properties of selective laser melted parts
Roland Logé, Christian Leinenbach, Nikola Kalentics, Manuel Ortega Varela De Seijas
Although Selective Laser Melting (SLM) currently revolutionizes the way parts are being manufactured, certain process inherent limitations such as accumulation of residual stresses and increased porosity content can lead to a decrease in fatigue life of pr ...
ELSEVIER2020Fatigue properties of as-welded and post-weld-treated high-strength steel joints: The influence of constant and variable amplitude loads
Alain Nussbaumer, Heikki Tapani Remes, Halid Can Yildirim
In HSS welded structures, HFMI allows fatigue strength improvement factors by inducing compressive residual stresses, cold-worked surface region and modifying the weld toe shape. According to the literature, the factors are proposed based on failures at CA ...
2020Comportement des éléments en béton armé fléchis sous charge cyclique
For various types of civil structures such as bridges, skyscrapers and other slender towers, oil rigs as well as runaways, dynamic loading is predominant. This holds true especially for bridges where loads have increased considerably in the last hundred ye ...
20203D laser shock peening as a way to improve geometrical accuracy in selective laser melting
Roland Logé, Nikola Kalentics, Andreas Burn, Michael Cloots
One of the major drawbacks of selective laser melting (SLM) is the accumulation of tensile residual stresses (TRS) in the surface and subsurface zones of produced parts which can lead to cracking, delamination, geometrical distortions, and a decrease in fa ...
SPRINGER LONDON LTD2019Mechanical properties of thermally grown submicron oxide layers on a nickel-based superalloy
Joris Pierre Everaerts, Wei Li
Nickel-based superalloys are frequently used under operating conditions that lead to the formation of an oxide layer. In this study, the mechanical properties of such a submicron oxide scale formed on a nickel-based superalloy were evaluated. The Poisson’s ...
2019