Skip to Main content Skip to Navigation
Journal articles

Original test device for crack propagation in the weld nugget of advanced high strength steels

Abstract : Advanced High-Strength Steels are ever increasingly used in industry, and unlike mild steels the crack propagates through the weld nugget. At the present time, any method to measure the strength of the fusion zone is unavailable. Therefore a new test setup enforcing crack propagation through the weld nugget was developed. In the wedge test proposed, this device provides stable crack growth as the wedge is displaced. Thus, along with in situ observations, this device, without any prior assumptions is able to measure energy dissipation rate as well as crack opening angle. This is very significant because from these two data, a mechanical modeled was established to predict the cohesive energy and strength in the weld nuggets of AHSS. This method: the experimental setup and mechanical model were then applied to commercial alloys and synthetic grades successfully. This indicates that this methodology can be applied to any type of alloy.
Document type :
Journal articles
Complete list of metadata

Cited literature [26 references]  Display  Hide  Download
Contributor : Géraldine Fournier-Moulin Connect in order to contact the contributor
Submitted on : Tuesday, December 10, 2019 - 11:02:30 AM
Last modification on : Monday, June 27, 2022 - 3:04:40 AM
Long-term archiving on: : Wednesday, March 11, 2020 - 4:55:19 PM


Files produced by the author(s)




Rémi Lacroix, Guillaume Kermouche, Arnaud Lens, Jean-Michel Bergheau, Helmut Klöcker. Original test device for crack propagation in the weld nugget of advanced high strength steels. Engineering Fracture Mechanics, Elsevier, 2015, 138, pp.156-168. ⟨10.1016/j.engfracmech.2015.02.022⟩. ⟨emse-01500896⟩



Record views


Files downloads