Under the action of tensile stress and tensile stress, the bolt with relatively low strength will crack first, and then the fatigue fracture will occur.
在拉应力和应拉力交替的作用下，强度相对较低的螺栓会先产生裂纹，进而发生疲劳断裂。
The deficiency of present belt drives design criteria is pointed out to get a start in sliding failure and fatigue fracture failure.
从防止带传动打滑失效和疲劳断裂失效出发，指出现有带传动设计准则之不足。
This will result in the fatigue fracture of the piston rod.
这样活塞杆就会产生疲劳断裂。
Common injuries in basketball include patella chondropathy, "basketball knee", ankle joint injury, waist muscle injury, lower waist pain, heel tendon peripheral inflammation and fatigue fracture etc.
篮球运动中常见的损伤类型有髌骨软骨病及“篮球膝”、踝关节损伤、腰肌劳损及下腰部痛、跟腱周围炎及疲劳性骨折。
This article focuses on the analysis of asphalt mixture and asphalt pavement fatigue fracture.
本文着重对沥青混合料与沥青路面的疲劳断裂进行分析。
The results indicate that the low strength and hardness, resulting from the Sulfide inclusions and organizational segregation, led to the crankshaft fatigue fracture.
结果表明：该曲轴硫化物夹杂偏多、组织偏析导致曲轴强度和硬度偏低，引起曲轴疲劳断裂。
The test data show that laser shocking can improve effectively the properties of aviation aluminium alloys against fatigue fracture.
试验数据表明，激光冲击能有效地提高航空铝合金抗疲劳断裂的性能。
The authors conclude that spondylolysis is mainly the fatigue fracture due to locally increased stress and is contributing most by backward extension of lumbar spine.
作者认为，椎弓峡部裂实质上主要是由局部应力增高而引起的疲劳骨折，而腰椎后伸与其关系最为密切。
The fatigue fracture surface features of blade are summarized firstly.
归纳总结了叶片疲劳断口的特征形貌。
The primary failure model is fatigue fracture that is always resulted by the crack initiation and propagation.
疲劳断裂是气门弹簧失效的主要模式，它是疲劳裂纹萌生及其扩展的结果。
The fatigue fracture surfaces of multiaxial fatigue specimens subjected to proportional and non-proportional multiaxial loadings were observed and analyzed by using the scan electron microscope.
利用扫描电镜对多轴比例和非比例加载下的薄壁管多轴疲劳试样的断口表面进行扫描观测分析。
We think that the method of estimating maximal pre-applied stress of the working bolt can provide a reference for preventing further fatigue fracture of boxter bolts.
认为用估算螺栓工作时的最大预紧应力的方法，对防止埋头螺栓疲劳断裂再次重复发生有一定的参考价值。
The fatigue fracture mode of LY12CZ aluminum alloy specimen with coating is investigated under stress control condition.
在应力控制下，分析带有涂层的LY 12CZ铝合金构件疲劳断裂方式。
Biomechanical factors, involving anatomical variation, have an important role in the development of fatigue fracture.
生物力学因素包括解剖的变异在疲劳性骨折产生方面具有重要的作用。
The fatigue fracture mechanism of main bearing cage is analysed and investigated for aircraft engine taking WP6 for example.
以WP6发动机轴承为例，对航空发动机主轴轴承保持架疲劳断裂的机理进行了分析探讨。
The result indicated that the springs fail because of corrosion fatigue fracture.
结果表明，该弹簧断裂为腐蚀疲劳断裂。
We also make tentative researches for fatigue fracture and for the effect of secondary crack on fatigue crack growth.
本文还在疲劳断口的研究方面进行了新的尝试，探讨了二次裂纹对疲劳裂纹扩展的影响。
The fatigue life is seen to depend on the grain size and stress amplitude, based on the nonequilibrium statistical theory of fatigue fracture and the model of interface energy.
在其它参数保持不变的情况下，得出细晶粒多晶体金属的平均疲劳寿命随晶粒尺寸和应力振幅的增加而减小的结论。
Influence of rare earth elements on high-cycle fatigue properties of AZ91D alloy was investigated and the fatigue fracture morphology was also analyzed.
研究了稀土元素对AZ 91 D压铸镁合金高周疲劳性能的影响，并对疲劳断口的组织形貌进行了分析。
In order to avoid the (fatigue) fracture, the dynamic characters and stiffness of the multi-layer leaf spring are essential to be analyzed.
为了防止板弹簧疲劳折断、开裂，需要对其动力学特性及其刚度进行分析。
Following a detailed mathematical derivation a new approximate algorithm for the fatigue fracture of metals is given namely a complicate integral having a changing upper limit.
在详细的数学推导之后，给出了金属疲劳断裂几率即一个变上限复杂积分的近似解析函数表达式，并与计算机的数值曲线进行了比较。
It is one of surface strengthening technology which is used to improve the resistance of fatigue fracture and stress corrosion cracking of metalic parts and components.
它是用来改善金属零构件疲劳和应力腐蚀断裂抗力的一种表面强化工艺。
Objective: To characterize the clinical presentation of fatigue fracture of tibia in school age children.
目的：掌握学龄期儿童胫骨疲劳性骨折特点并正确诊断。
The results show that the fatigue fracture is the main cause of fracture failure for the connecting rod.
结果表明，连杆属于疲劳断裂，断裂失效主要由折叠裂纹引起。
The results show that the fracture mode of the pins is fatigue fracture.
结果表明：高压电容引脚断裂性质为疲劳断裂。
The application and research of sound emission techniques in the fatigue fracture analysis of structuaral members on railway cars are discussed in the end of paper.
最后对声发射技术在车辆构件疲劳断裂分析中的应用研究进行了探讨。
The result indicates that the fracture of the drive countershaft is fatigue fracture.
结果表明，传动副轴的断裂是疲劳断裂。
Therefore it can be judged that the fractures in the tubing are fatigue fractures and the tubing failure is caused by fatigue fracture.
由此可以断定油管断口属疲劳断口，油管的断裂失效性质是疲劳断裂。
The results showed that the fracture was of typical fatigue fracture, and surface defects were the main factor resulting in the failure of the air valve spring.
结果表明，断裂呈现典型的疲劳断裂特征，材料表面缺陷是引起该弹簧疲劳断裂的主要原因。
The results showed that the fracture was of typical fatigue fracture, and surface defects were the main factor resulting in the failure of the air valve spring.
结果表明，断裂呈现典型的疲劳断裂特征，材料表面缺陷是引起该弹簧疲劳断裂的主要原因。
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