The results of fatigue test of reactor manifest the fatigue life of the reactor materials under different strain and stress condition.
反应器的疲劳试验结果充分反映了反应器材料在不同应力应变水平下的疲劳寿命。
In the test, it is verified that the random cyclic constitutive relations, like the wide recognized random cyclic strain-life relations, is an intrinsic fatigue phenomenon of engineering materials.
试验验证了以前在焊缝金属试验中的发现与推断，即工程材料的循环本构存在随机性，与循环应变-寿命关系的随机性一样，是固有的疲劳现象。
Objective to design a new kind of thermocycling and mechanical loading (TCML) chewing simulator and test the chronic fatigue characteristics of dental materials and prosthesis.
目的研制冷热循环机械载荷咀嚼模拟疲劳试验机来人工模拟口腔环境的温度变化和咀嚼负荷，检测口腔材料的疲劳寿命。
Therefore, it is necessary to determine the appropriateness of ultrasonic fatigue test for researching the effect of frequency on giga-cycle fatigue properties for structural materials.
因此，研究超声加载频率对结构材料超高周疲劳性能的影响，从而确定加速疲劳实验的妥当性十分必要。
Therefore, it is necessary to determine the appropriateness of ultrasonic fatigue test for researching the effect of frequency on giga-cycle fatigue properties for structural materials.
因此，研究超声加载频率对结构材料超高周疲劳性能的影响，从而确定加速疲劳实验的妥当性十分必要。
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