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.

引用

页码：373 / 376

页数：4

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