Author(s)

Y. Katz & A. Bussiba

Abstract

Intrinsic aspects in fracture resistance of semi-ductile poly crystalline materials Y. Katz, A. Bussiba NRCN, PO Box 9001, Beer-Sheva 84190, Israel ABSTRACT An appropriate way to describe the current stage of fracture mechanics is by demonstrating the ongoing activities aided by simulations as related to crack-tip dislocation emission models. As such, the major objective of the present study to follow a localized approach on some theoretical/experimental interfaces. In order to assist here, semi-ductile polycrystalline materials with high and low crystal symmetry were selected. It was found that for materials characterized by a Ductile-Brittle Transition (DBT), the lower shelf regime might be well described, while a model extension is still required for the transition regime. Here, the important point remains on the local versus global approaches beside an attempt to approach the crack initiation criteria as founded on the intrinsic properties. INTRODUCTION The pre

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