Impurities in its material affect the fatigue life.
材料中的杂质影响疲劳寿命。
Leather seemed to fascinate him and he often experimented with leaving clothes under a sunray lamp until the material suffered fatigue and the colors started to fade.
他好像被皮革迷住了，经常做试验把衣服放在紫外线灯下，直到料子经受疲劳，开始褪色。
Fatigue failure results from accumulation of cracks of deformation pro - cess of material.
疲劳破坏是材料在变形过程中产生的裂纹积累。
If the failure is defined as the final fracture of a component, then both S-N curves and crack growth rate curves reflect the fundamental material behavior under fatigue loading.
如果都把一个构件的最终断裂作为疲劳破坏的定义，则S - N曲线和裂纹扩展率曲线均是反映金属在疲劳载荷作用下的基本材料特性。
A section of (wing trailing-edge) flap detached during flight probably due to material fatigue.
一段襟翼在飞行中掉落可能因材料疲乏。
The material fracture toughness was adequate to ensure development of the full fatigue resistance of the weld detail.
材料的断裂韧性可充分满足焊缝细节疲劳抗力的发挥。
Fatigue of material is a process of energy dissipation.
材料的疲劳是能量耗散过程。
Bending fatigue limit stress is still short of reliable data for gear of domestic material in gear design mostly used are the data offered from ISO6336.
在齿轮设计中，国产材料齿轮的弯曲疲劳极限应力仍然缺乏可靠的试验数据，大多是沿用ISO 6336提供的数据。
The composite material has resulted in greater load carrying capacity, a reduced thermal expansion, greater wear resistance and fatigue endurance.
合成材料具有更好的承载能力，更低的热膨胀系数，更好的耐磨性和更好的抗疲劳性能。
But the study on the rolling contact fatigue failure mechanism of super hard material coati-ngs is in grope.
但是目前对于超硬涂层材料滚动接触疲劳失效机理的研究还处于探索之中。
Structures are always subjected to various adverse factors during its long-time service, such as fatigue, environmental corrosion, material aging, etc.
在结构长期服役期间，疲劳、环境腐蚀和材料老化等因素的作用会引起结构损伤的累积。
The study work is focused on the effect of temperature upon mechanical properties, creep, initiation and propagation of fatigue crack for the valve material.
着重温度对气门材料的力学性能、蠕变和疲劳裂纹形成与扩张的影响等问题进行分析和研究。
This method can make the fatigue test result with great dispersion be processed reasonably, so as to provide correct test data for appraisal of material fatigue and estimation of fatigue life.
该方法使分散性很大的疲劳试验结果得以合理处置，从而可准确地提供试验数据，供作材料疲劳鉴定与疲劳寿命估算之用。
This paper sates that selecting bellows material correctly, designing waveform parameter and fatigue life, ensuring installation quality can improve the safety and reliability of bellows compensator.
通过正确地选择波纹管制作材料和结构、合理设计波形参数和疲劳寿命、保证安装质量等措施，可提高波纹管补偿器的安全可靠性。
The actual illustration and testing method of fatigue property of filtration material were presented. The fatigue strength property is very important in the application period for filtration material.
介绍了过滤材料耐疲劳特性的测试实例和试验方法。耐疲劳强度特性在过滤材料的使用期间是非常重要的一项性能。
The coupling effect of fatigue and erosive ions is introduced on the level of material and structure.
从材料、结构角度对疲劳荷载和腐蚀介质的耦合作用进行了总结与分析。
The dynamic wavelet neural network method is applied to predict the fatigue residual life of the composite material. The predicting result is very close to the testing result.
本文采用动态小波神经网络方法，对复合材料疲劳剩余寿命进行了预测，结果与试验结果很接近。
The method has considered the effect of difference in material hardness on the fatigue limit, which causes the shaft diameter design to become different depending on heat treatment difference.
该方法考虑了材料硬度对疲劳极限的影响，使半轴杆径设计随热处理方法不同而有所差异。
Then, by reasonably defining damage factors, the fatigue damages and the corresponding evolution principles of the new material and the steel fiber-reinforced concrete were measured by experiments.
通过合理定义损伤变量，由试验测定了新材料和钢纤维增强混凝土的疲劳损伤及其演化规律；
High-frequency fatigue tester, which belongs to metal material tester, is used to measure the fatigue performance of drawing, compressing of metal material and its alloy in room temperature condition.
高频疲劳试验机属于金属材料试验机，是一种主要用于测定金属及其合金材料在室温状态下的拉伸、压缩或拉压交变负荷的疲劳性能试验的机器。
Three variables as temperature, load frequency and stress ratio are the critical parameters affecting fatigue crack growth behaviour in metallic material.
温度、载荷频率和应力比是影响材料疲劳裂纹扩展行为的主要因素。
The fatigue break down is the main form of die failure. To improve the use life of dies, an approach for increasing fatigue resistance of die material is reviewed.
疲劳破坏是模具失效的主要形式，为了提高模具的使用寿命，综述了提高模具材料疲劳抗力的多种途径。
Stochastic fatigue, chaotic fatigue and the fatigue life estimation of the composite material are three important aspects in fatigue research. The fatigue damage probability distribution was given.
随机疲劳、混沌疲劳及复合材料疲劳寿命估算属疲劳学研究的三个重要前沿．给出了疲劳损伤的动态概率分布；
After shot peening, the regular fatigue strength of aluminium alloy can be increased and the effect of micromotion on fatigue performance of ther material can be avoided.
铝合金经喷丸强化处理后，可将常规疲劳强度提高，并使材料的疲劳性能不受微动作用的影响。
The frame 's fatigue strength distribution has been obtained by calculating the experimental result of material fatigue test and has been described by means of two regression curves.
构件的疲劳强度分布是由材料疲劳强度试验的结果经统计处理后，用两条拟合曲线来描述的。
Furthermore, the effect of solder ball layout and stress relax buffer layer material on the fatigue life of solder joints is studied.
最后探测锡球配置方式和缓冲层材料性质对于锡球疲劳寿命的影响，以获得高可靠度的封装结构。
Moreover, the material initial crack can intensify fatigue when the structures under the wind load.
此外，材料的初始裂纹会加剧风荷载作用下结构的疲劳。
As base course material, porous concrete withstands the repeated action of traffic and temperature, so the fatigue property should be considered in structure design.
多孔混凝土作为路面的基层，和面层一起受到车辆荷载和温度的反复作用，结构设计中需考虑其疲劳性能。
Bearing a ring or a washer or a rolling of the material fatigue before the first time, a ring or a washer relative to another ring or a washer in the rotation.
轴承的一个套圈或一个垫圈或一个滚动体的材料首次出现疲劳扩展之前，一个套圈或一个垫圈相对于另一个套圈或一个垫圈的转数。
This structure forms the passivation layer against corrosion and wear. The optimum layer against wear improves the resistance of material surface in corrosion, wear and fatigue extremely.
这种结构形成了抗磨损的优化表面层和抗腐蚀的钝化层，明显改善了材料表面抗磨损、抗疲劳和抗腐蚀特性。
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