Author(s)

D. Moinereau

Abstract

It is now well known that specimens with short cracks can present significant higher fracture toughness compared to classical specimens with deep cracks ("shallow flaw effect"). The purpose of this paper is to evaluate the capability of local approach to cleavage fracture (Beremin model) to explain this effect in cleavage fracture. Numerous two-dimensional finite element calculations are performed on cracked specimens (cladded and uncladded specimens with different values of a / W ratio) submitted to mechanical or thermal loading. The behavior of different specimens is examinated using the Weibull stress o^ versus stress intensity factor K, curves. 1 Introduction It is now well known that specimens with short cracks can present significant higher fracture toughness com

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