Threshold stress range for short crack growth

机译：裂纹扩展的临界应力范围

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By determining the threshold stress range,which is that just sufficient to initiate and grow a short fatigue crack,it is possible to predict the fatigue limit and depth of non-propagating cracks in smooth and notched specimens.The approach is based on assessing the non-uniformity of strains at the surface and the development of crack closure.The nomical threshold increases with crack depth and reaches a maximum value corresponding to the endurance limit.The depth of non-propagating cracks increases with applied stress range to reach a maximum at the endurance limit.

机译：通过确定阈值应力范围，该范围仅足以引发并扩展一个短的疲劳裂纹，就可以预测光滑和有缺口试样的疲劳极限和非传播裂纹的深度。表面应变的均匀性和裂纹闭合的发展。一般阈值随裂纹深度的增加而增加，并达到与耐力极限相对应的最大值。非传播裂纹的深度随施加的应力范围而增加，达到最大耐力极限。

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《Proceeding of An International Conference the Importance of understanding the fundamentals of the fatigue Process in Counteracting Its Effects in Engineering Components and Structures,and to Reflect on the Contributions of K.J.Miller Sheffield/United》|1997年|p.55-61|共7页
会议地点 Sheffield(GB)
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A.Plumtree;
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正文语种 eng
中图分类一般工业技术;
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Threshold stress range for short crack growth

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