On the Construction of the Diagram of Growth Rates for a Fatigue Macrocrack

被引：0
|
作者：
O. P. Ostash
机构：
[1] Ukrainian Academy of Sciences,Karpenko Physicomechanical Institute
来源：
Materials Science | 2003年 / 39卷
关键词：
Growth Rate; Fatigue; Crack Length; Crack Growth Rate; Paris Part;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
We consider some problems encountered in constructing the diagrams of growth rates for fatigue macrocracks. It is shown that, in the subthreshold part of the diagram and at the beginning of its Paris part, the minimum increments of crack length Δa specifying reliable values of the crack growth rate are determined by a linear (structural) parameter d* of the material. Therefore, it is necessary to fix increments of crack length according to the condition Δa ≈ d*.
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页码：245 / 249
页数：4
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