%K Linear elastic fracture mechanics; Bi-layered structural components; Fracture mechanisms; Failure modes; Thermo-elastic and residual stresses
%A Alberto Carpinteri
%A Marco Paggi
%L eprints1961
%D 2007
%X The problem of crack propagation in bi-layered structural components is addressed. Due to the presence of the bi-material interface and depending on the loading direction, a competition between different crack trajectories (failure modes) can take place. The quantification of the dominant failure mode and of the prevailing fracture mechanism is very often a challenging task, although it is crucial for design purposes. In this contribution, starting from the experimental observation of failure modes in a variety of engineering applications involving bi-layered structural components, an interpretation is proposed in the framework of the finite elements discretization and linear elastic fracture mechanics. The effect of thermo-elastic and residual stresses on the stability of crack propagation is carefully examined. Numerical results confirm the qualitative experimental observations of failure modes in bi-layered structural elements used for rock drilling applications. 
%R 10.1016/j.finel.2007.06.003
%J Finite Elements in Analysis and Design
%N 11?12
%P 941 - 953
%T Numerical analysis of fracture mechanisms and failure modes in bi-layered structural components
%V 43
%I Elsevier