借用损伤机制描述裂纹扩展规律。
The crack propagation law is described using damage mechanism.
然而不改变合金的裂纹扩展方式。
However, It does not changed the path of creep crack growth.
裂纹扩展到达界面层时发生偏折。
对现行的两种多裂纹扩展算法作了改进。
We present the improvement of two existing algorithms of multiple crack growth.
扫描照片显示裂纹扩展方向平行于表面。
The results show that the direction of crack propagation is parallel to the surface.
晶粒尺寸大小对裂纹扩展速率也有影响。
Grain size had some effect on the rate of crack propagation.
载荷保持加速裂纹扩展。
当裂纹扩展到临界尺寸时，接头会迅速破坏。
The single lap joint fails when the crack length reaches to the critical size.
提出了裂纹扩展机制。
本试验也得到了材料的裂纹扩展速度和撕裂模量。
Crack speed and tearing modules for the material are also obtained.
裂纹缺陷周围的应力变形场是影响裂纹扩展的重要因素。
The stress field near crack tip is an important factor to effect crack extension.
首先介绍了直流电位法——裂纹扩展片检测裂纹的方法和原理。
The principle and method for testing surface crack through direct current potential difference are introduced.
对弹塑性材料裂纹扩展阻力曲线是惟一的，与裂纹初始长度无关。
The material resistance curve is unique and independent on crack initial lengths.
在不同应力情况下，给出了结构的裂纹发生部位、裂纹扩展方向等模式。
The models for crack propagation position, expanded direction, etc. are put forward under various stresser.
晶粒尺寸对形成寿命、扩展寿命和裂纹长度的分布特性都有影响。
The initiation life, growth life and crack length distributions are affected by the grain size.
同时，焊接应力的存在和水质不良加速了裂纹的扩展。
Besides, the welding stress and wicked water accelerate the crack growth.
裂尖前方可能发生形变孪晶，裂纹沿孪晶界扩展。
Local cleavage fracture might happen in the front of crack tip.
在一定尺寸范围内，裂纹的亚稳扩展速率近似是常数。
The metastable propagation rate of crack is approximately a constant in a certain size range.
爆炸气体对裂纹的产生和已有裂纹的扩展具有重要的影响。
Gas of explosion produce has important affect on producing and expanding of crack.
同时还对含表面缺陷钢管裂纹形态的疲劳扩展演变规律进行了分析。
The evolution feature of surface crack shape is analysis too in this paper.
最后算出裂纹疲劳扩展寿命。
最后算出裂纹疲劳扩展寿命。
应用推荐