A unified model of initiation and growth of fatigue macrocracks. part 3. Stage of growth of a macrocrack

被引：5
作者：
Ostash, OP [1 ]
Panasyuk, VV [1 ]
机构：
[1] Ukrainian Acad Sci, Karpenko Physicomech Inst, Lviv, Ukraine
来源：
MATERIALS SCIENCE | 1999年 / 35卷 / 03期
关键词：
D O I：
10.1007/BF02355474
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
From a common viewpoint, fatigue fracture of materials is simulated by the process of initiation of an initial macrocrack of length a(i) = d* (d* is the constant of the material), which is successively (stepwise) repeated at the stage of its growth. As a result, the diagram "range of local stresses - period of initiation of an initial macrocrack" or ''range of local strains - period of initiation of an initial macrocrack," which was determined for notched specimens, can be used fur the construction of the diagram "growth rate of a macrocrack - range of the stress intensity factor" or "growth rate of a macrocrack - range of local strains," respectively, if the crack is presented as a sharp notch with effective rounded radius rho(eff) = d* of the tip.
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页码：299 / 309
页数：11
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