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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。
The fractography of the fatigue crack initiation displayed cleavage f... 裂纹形成的断裂为穿晶解理机制,预应变可导致更多的二次裂纹。
No evidence of fatigue crack extension was detected in the silver Memorial Bridge nor the Fremont Bridge. 在西尔费纪念桥和弗里蒙特桥都没有检查出疲劳裂纹扩展的证据。
In service, fatigue cracking initiated at the plating runout led to lug fracture. 在实际使用中，在镀层的过渡段发生的疲劳裂纹会导致接耳断裂。
N. Shlyannikov, Z.B. Kuang, F.P. Yang (2004), Surface fatigue crack growth behavior, Russian journal Power Engineering Problems. 杨凤鹏，林卓英(2004)，表面裂纹疲劳扩展的试验，北京科技大学学报.
The behaviours of fracture, fatigue and fatigue crack propagation in a cast magnesium alloy are systematically studied. 本文系统地研究了铸造镁合金的断裂;疲劳和疲劳裂纹扩展性能.
The failure forms of cold work roll including contact fatigue crack, spalling, inclusion crack and wear are discussed. 讨论了冷轧工作辊接触疲劳裂纹、剥落、夹杂物裂纹和磨损等失效形式。
The fatigue crack growth rate (FCGR) of 4130X steel in H2S environment is researched in this paper. 研究了4130X钢在硫化氢(H2S)腐蚀介质中的疲劳裂纹扩展速率da/dN。
In this paper, ALGOL computer program of data reduction techniques, for fatigue crack growth test is described. 本文叙述了疲劳裂纹扩展速率试验数据处理的ALGOL计算程序。
SEM and Microzone Phase Structure Analysis (MPSA) help to describe the process of fatigue crack growth of the steel. 用SEM和微区相结构测试技术分析了中锰铸钢在疲劳裂纹扩展过程中的行为特点。
The fracture and the surface of a hip joint fractured invivo has been studied by SEM.It is concluded that the fracture was due to corrosion fatigue cracking by bending stress. 利用SEM对实际使用时断裂的髋关节的断口和表面进行了分析,认为此关节的断裂为以弯曲应力为主的腐蚀疲劳断裂。
The research results sho w that the fatigue life has been im provedgreatly and the fatigue crack gro ... 结果表明：激光冲击处理后，铝合金疲劳寿命显著提高、疲劳裂纹扩展速率大大降低。
The fatigue crack growth rate is the core for predicting fatigue life by use of fatigue crack propagation(FCP) theory. 疲劳裂纹扩展率表达式是采用疲劳裂纹扩展理论预报疲劳寿命的核心。
The threshold of the fatigue crack initiation from the notch of the microbeam is close to that of the bulk material. 疲劳裂纹从尖缺口处萌生的门槛值接近块体材料。
G .C .Sih，Mixed Mode Fatigue Crack Growth Prediction.Frac .Mech，Vol.13(3)，439-451，(1980). 肖芳淳:复合型塑性区尺寸因子断裂判据，力学与实践，第一期，1981年。
The formation mechanism of thermal shock fatigue crack of cemented carbide YG10 was investigated. 研究了YG10硬质合金热冲击疲劳裂纹的形成机制。
The fatigue crack growth experiments were performed according to the phenomena that crack occurred at PMMA in use. 根据外场使用中出现的裂纹现象，进行了疲劳裂纹扩展试验。
The nucleati-on, growth and connection of fatigue cracks were photographed. 拍摄了热疲劳裂纹的形核、成长、连接过程。
It was found that the initial fatigue crack nucleated at the cross edge of the hole and surfaces of the specimen by sliding. 试验结果表明 ,疲劳裂纹以滑移方式在孔壁与试样表面相交的棱上萌生 ;
In addition, alumina is the origin of fatigue crack and thus impairs the fatigue property of bearing steels, rail steels and wheel steels. 另外，氧化铝还是疲劳裂纹的形核核心，致使轴承钢、钢轨钢和车轮钢的疲劳抗力降低。