Fracture Toughness of Hardox-400 Steel at the Ductile-to-Brittle Transition Temperature Range − The Influence of the In-Plane Constraint

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Abstract:

Fracture toughness is a structural elements property. Critical values of the J - integral, JIC measured according to the standards requirements, when transferred to engineering applications can lead to a significant conservatism in assessing integrity of a structure. In the article the formulae to estimate the fracture toughness taking into account the in-plane constraint in elements are proposed. These formulae are based on the analysis of the stress field in front of the crack proposed by Hutchinson, Rice and Rosengren (HRR), and O'Dowd's, Shih's modifications of HRR field, as well as the analysis of the stress field in front of the crack, computed numerically.

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Solid State Phenomena (Volume 224)

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167-172

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November 2014

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© 2015 Trans Tech Publications Ltd. All Rights Reserved

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