crack growth

基本解释

We get valuable results about the effect of the stress ratio and residual stress on fatigue crack growth.
在应力比，残余应力对疲劳裂纹扩展的影响方面获得了有价值的成果。
Results show that the development of creep makes the crack tip stress singularity in the weld and the driving force for crack growth increased.
结果表明在外载恒定的情况下，蠕变的发展会使焊缝裂尖的应力奇性增加，裂纹扩展的驱动力增大。
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A study has been done over the small crack growth rate for kinds of carbon steels under push pull and rotating bending.
对多种碳素钢在拉伸压缩和旋转弯曲负载下的微小裂纹扩展速率进行了研究。

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裂纹扩展
. The result of research enriches the trial method, get the fatigue crack growth laws of four kinds of pressure vessel materials at high temperature. Provide a kind of numeric method.
本文的研究结果，丰富了试验方法;得到四种压力容器材料的高温疲劳裂纹扩展规律;对疲劳裂纹扩展路径判定提供一种计算机方法。
物理学
裂纹开展

裂纹扩展
On the basis of same reason with part one of this dissertation, we think that true motive force of crack growth comes form the deviator strain energy release.
与学位论文第一部分中的根据相同,作者认为金属材料中裂纹扩展的真实动力来源于形状改变比能的释放。
裂纹增长