The fourth is the numerical investigation of the stress intensity factors for a semi-elliptical surface crack at the T-root groove of a turbine disc under centrifugal loading.
第四个问题是在离心载荷作用下汽轮机叶轮T型叶根槽表面裂纹应力强度因子数值研究。
参考来源 - 工程中含接触问题的孔边裂纹应力强度因子数值研究However, this theory does not apply asphalt pavement surface crack. There are not design indicators to control this crack in Asphalt Pavement Design Specifications.
传统的沥青路面设计理论,都是以层底容许弯拉应力作为控制结构层疲劳开裂的设计指标,对沥青路面表面开裂没有作出合理的解释,沥青路面设计规范中也没有给出控制指标。
参考来源 - 行车荷载和温度作用下的沥青路面表面开裂研究·2,447,543篇论文数据，部分数据来源于NoteExpress
All of these tests are used to detect surface crack discontinuities.
所有这些测试是用来检测表面裂缝不连续性。
Surface crack of steel components was repaired with two bundle of laser.
采用双光束激光修复碳钢零件的表面裂纹。
This will lead to roll failure such as fire crack, surface crack, and fatigue failure.
这将会导致轧辊疲劳产生热裂、轧辊表面破裂或是疲劳层的产生。
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