The measurement of the value and distribution for micro-residual stress in materials was crucial and difficult for micro-fracture theory.
测量材料微区残余应力的大小和分布,对于研究微观断裂机制具有非常重要的意义,一直是研究的热点和难点。
Experiment results showed that the fracture of the nut was originated from a variety of macro defects, micro defects both by founding and machining, as well as high residual stress.
结果表明,螺母存在多种铸造及加工的宏观、微观观察缺陷和残余应力过高是螺母断裂失效的原因。
The intensities of MAE have been measured as a function of the stress during loading and unloading, which can be used to evaluate the micro-damage and residual stress in ferromagnetic materials.
通过加载和卸载过程中所得到磁声发射强度的变化规律,可用以评估材料中微观损伤及残余应力。
On the basis of elastic mechanics theory, the micro residual stress expression of matrix around fiber in metal matrix composites is deduced.
根据弹性力学理论建立了纤维增强金属基复合材料中纤维周围基体中的残余热应力模型。
The method of metal magnetic memory is a new potential nondestructive testing method, which can be used to detect and estimate the residual stress and micro-damages of the ferromagnetic items.
利用磁记忆效应对铁磁性金属构件的残余应力和微损伤进行检测和评估,是较有潜力的无损检测新方法。
The residual stress fields of thermal barrier ceramic coating were measured for every twenty thermal cycles by using micro-Raman spectroscopy technique.
再应用微拉曼光谱法测量了热障涂层样品内残余应力场大小,并分析了试样尺寸、热处理温度和陶瓷涂层厚度对残余应力的影响。
The results show that the reason of developing cross flaw is some micro-cracks on the local area and high residual stress in the early of chrome-plating of the samples.
结果表明,形成网格状裂纹的原因是,在镀铬前,样品表面局部区域就存在一些微裂纹及较高的残余应力。
The method is characterized in that: simultaneously maintaining the needed micro-structure, part of the material after pulse processing still fully eliminates the residual stress in the material;
本发明的特点在于:脉冲处理后的材料在保持所需微结构 的同时部分乃至完全消除了材料中的残余应力;
The effect of the micro residual stress on material properties during tensile is analyze. This theory mentioned above can be used to analyzed the mechanics behavior of composites.
探讨了在单向拉伸时该残余热应力对材料性能的影响,为分析复合材料的力学行为提供理论指导。
The effect of the micro residual stress on material properties during tensile is analyze. This theory mentioned above can be used to analyzed the mechanics behavior of composites.
探讨了在单向拉伸时该残余热应力对材料性能的影响,为分析复合材料的力学行为提供理论指导。
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