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Conference papers
Local approach applied to the fracture toughness of resistance spot welds
Abstract : A recently developed methodology for measuring the nugget fracture toughness in mode I was applied to three high-strength steel resistance spot welds, exhibiting either mixed cleavage/ductile or ductile fracture at room temperature. Fracture toughness tests revealed a difference in ductile-to-brittle transition temperature between the welds. Constitutive equations of weld nuggets were determined and implemented in a finite element model of the fracture toughness test, revealing both in-plane bending and in-plane stretching in front of the crack tip. Brittle cleavage fracture of the nuggets is not conveniently described using a simple Ritchie-Knott-Rice approach but the Rice-Tracey model allowed quantitatively relating the high number density of small particles to the nugget fracture toughness in the ductile regime.
Cited literature [9 references]
https://hal-mines-paristech.archives-ouvertes.fr/hal-00853411
Contributor : Bibliothèque Umr7633 <>
Submitted on : Thursday, November 14, 2013 - 3:42:39 PM
Last modification on : Wednesday, October 14, 2020 - 3:52:48 AM
Long-term archiving on: : Saturday, February 15, 2014 - 4:28:55 AM
Contributor : Bibliothèque Umr7633 <>
Submitted on : Thursday, November 14, 2013 - 3:42:39 PM
Last modification on : Wednesday, October 14, 2020 - 3:52:48 AM
Long-term archiving on: : Saturday, February 15, 2014 - 4:28:55 AM
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