MATERIALS TRANSACTIONS
Online ISSN : 1347-5320
Print ISSN : 1345-9678
ISSN-L : 1345-9678
Plastic Relaxation at Crack Tip: Micromechanical Analysis
Maria Angela Loyola de OliveiraAngelo Gil Pezzino RangelGerard Michot
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2001 Volume 42 Issue 1 Pages 20-27

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Abstract

The influence of a plastic zone developed at a crack tip is analyzed under a micromechanical point of view. Mechanical interaction is described in terms of crack shielding caused by the stress intensity factor induced by a dislocation loop in the three opening modes. Numerical calculations and experimentally studied configurations quantify the total relaxation rate induced by this dislocation loop.

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© 2001 The Japan Institute of Metals and Materials
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