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1·The flaking do increases and undulates the fatigue crack growth rate.

钢中的白点能增加疲劳扩展速率并使扩展速率发生波动。

2·Short fatigue crack propagation is much accelerated by filled hydrogen.

充氢条件下，大大加速短裂纹疲劳扩展。

3·Fatigue crack growth threshold is predicted based on materials cyclic plasticity.

基于材料的循环塑性预测了疲劳裂纹扩展的门槛值。

4·A distribution function of two dimensional threshold is given for fatigue crack propagation.

本文给出二维疲劳裂纹扩展门槛值分布函数，建立二维应力—门槛值干涉模型。

5·And formation of typical fatigue striation on fatigue crack steady propagation is difficult.

其疲劳裂纹的稳定扩展也较难形成典型的疲劳条带。

6·An experimental study on the fatigue crack growth of GH4169 superalloy has been carried out.

本研究中对GH4169高温合金的疲劳裂纹扩展性能进行了试验研究。

7·The fatigue crack extended under the applied stress and led to clutch fork crack and failure.

在工作应力作用下，裂纹不断扩展，最后导致拨叉完全开裂失效。

8·The fatigue crack growth curve from initial crack size till fatigue failure is simulated step by step.

循环续循环模拟计算出裂纹从初始长度一直到疲劳破坏的扩展曲线。

9·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。

10·The formula of the fatigue crack propagation rate was directly derived from the fatigue damage criterion.

通过疲劳损伤准则，导出疲劳裂纹稳定扩展速率的计算公式。