short surface fatigue cracks 表面疲劳短裂纹
short engineering fatigue cracks 工程短疲劳裂纹
fatigue short cracks 疲劳短裂纹
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The process of crack initiation and propagation was observed through replication, and the effect of grain size on the behaviour of short fatigue cracks was studied.
对两种晶粒尺寸的中碳钢光滑试样进行了旋转弯曲疲劳试验；应用复型技术监测了短裂纹形成与扩展过程，研究了晶粒尺寸对短裂纹行为的影响。
Short cracks propagation research: the degree of Microscopic structure influence to the fatigue crack propagation depends on crack length.
短裂纹扩展研究：微观组织结构对疲劳短裂纹扩展的影响程度取决于裂纹的长度。
To obtain data of the fatigue short cracks progression in large extent, specimens with different circle indentation gauge were tested and different load condition was applied.
为得到宽范围内的疲劳短裂纹扩展数据，分别对不同试样缺口尺寸和不同载荷条件进行了疲劳试验。
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