Deviant crack path behaviour of aluminium-lithium alloy AA8090 plate

被引：1
|
作者：
Gregson, PJ
Sinclair, I
机构：
来源：
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART G-JOURNAL OF AEROSPACE ENGINEERING | 1996年 / 210卷 / G2期
关键词：
fatigue; mixed mode; crack path; aluminium alloys; Al-Li alloys; lifing;
D O I：
10.1243/PIME_PROC_1996_210_352_02
中图分类号：
V [航空、航天];
学科分类号：
08 ; 0825 ;
摘要：
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 materials are subjected to conventional, mode I based structure lifing techniques.
引用
收藏
页码：117 / 121
页数：5
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