CORDIS Project
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This project focuses on improving the fatigue life of high-strength steel welds using high-frequency mechanical impact treatment. It aims to understand the damage mechanisms under service loading conditions, enhancing the application of high-strength materials in structural engineering.
The use of high-strength steel (HSS) grades leads to significant weight reduction and increased service life, especially in complex-welded structures.
However, their implementation is limited in practice due to the fatigue issues at welds, welds which have the same fatigue life as those in lower strength steels.
High-frequency mechanical impact (HFMI) treatment allows for important fatigue life improvement based on the induced compressive residual stress (RS), improved weld shape and cold-worked…
ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE
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