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
来源：
INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING | 2002年 / 79卷 / 05期
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.
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页码：373 / 376
页数：4
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