Deviant Crack Path Behaviour of Aluminium-Lithium Alloy AA8090 Plate-Reference-Cited by-同舟云学术

Deviant Crack Path Behaviour of Aluminium-Lithium Alloy AA8090 Plate

Published:1996-04 Issue:2 Volume:210 Page:117-121
ISSN:0954-4100
Container-title:Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering
language:en
Short-container-title:Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering

Author:

Gregson P J¹,Sinclair I¹

Affiliation:

1. Department of Engineering Materials, University of Southampton

Abstract

The unusual susceptibility of the Al-Li alloy AA8090 to sustained macroscopic deviation of fatigue cracks from a nominal mode I path during conventional fatigue testing is discussed. It is demonstrated that the mixed mode crack growth associated with macroscopic deviation may be characterized in terms of elastic strain energy release rates for a range of mixed mode loading conditions. It is specifically shown that this form of mixed mode crack growth may lead to non-conservative crack growth predictions when these materials are subjected to conventional, mode I based structure lifing techniques.

Publisher

SAGE Publications

Subject

Mechanical Engineering,Aerospace Engineering

Link

http://journals.sagepub.com/doi/pdf/10.1243/PIME_PROC_1996_210_352_02

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