Spot heating induced fatigue crack growth retardation

被引:15
|
作者
Ray, PK [1 ]
Verma, BB [1 ]
Mohanthy, PK [1 ]
机构
[1] Reg Engn Coll, Dept Engn Met, Rourkela 769008, India
关键词
spot heating; overloading; delay cycle; fatigue crack growth retardation;
D O I
10.1016/S0308-0161(02)00019-4
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Retardation in a growing fatigue crack can be achieved by heating (to a sub-critical temperature) a Spot ahead of the crack. The retardation behaviour is comparable to that obtained in a specimen subjected to an overload spike. It is observed that the retardation increases with increase in spot heating temperature. The maximum retardation is obtained in specimens spot heated at a position 5 nun ahead of the crack tip. (C) 2002 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码:373 / 376
页数:4
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