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论文类型：期刊论文

发表时间：2001-01-01

发表刊物：JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY

收录刊物：SCIE

卷号：17

页面范围：S73-S76

ISSN号：1005-0302

摘要：An artificial wedge to retard;fatigue crack growth in tension has been investigated. The results show that an artificial wedge can reduce the growth rate of fatigue crack on surface fatigue crack and, the fatigue crack growth behavior is essentially similar in-depth and width directions. Based on a theoretical analysis, a model for the effective crack growth parameter DeltaK(eff) is presented. It is shown that the relationship between the calculated DeltaK(eff) value and crack speed are almost the same as those of cracked specimens without a wedge. Therefore this model can be applied to estimate retardation behavior.