Displacement-Based Assessment of Ductile Tearing under Low-Constraint Conditions
V.P. Naumenko*, S.V. Lenzion , I.V. Limansky
Identifiers and Pagination:Year: 2008
First Page: 40
Last Page: 59
Publisher Id: TOMEJ-2-40
Article History:Received Date: 31/03/2008
Revision Received Date: 22/05/2008
Acceptance Date: 06/06/2008
Electronic publication date: 14/7/2008
Collection year: 2008
open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: (https://creativecommons.org/licenses/by/4.0/legalcode). This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
This paper deals with several issues in the ductile tearing assessment relevant to the fracture criteria and test methods covering the determination of the crack growth resistance under low-constraint conditions. Specifically, the effects of the specimen geometry and size, type and length of the original stress raiser, boundary restraints, load biaxiality, loading history, and plastic anisotropy were studied experimentally. With regard to the problem of transferring crack growth data, our results demonstrate that underlying assumptions of the current concept of ductile tearing evoke a suspicion from different points of view. To clarify the reasons for a gap between the model descriptions and measurements, we put forward an innovative engineering concept enabling through-life assessment of the fracture process in sheet metals.