结果表明，随筛板孔距的增加，其拉伸强度、拉伸屈服应力及拉伸断裂应力均提高；
The results showed that tensile strength, tensile yield stress and tensile breaking stress were increased with the increase of bore distance;
力学模型分析表明，基体残余压应力以抵抗基体拉伸变形的方式提高了铬层的断裂韧性；
The analysis of mechanical model shows that the fracture toughness is improved by residual compressive stress of substrate surface, which resists the tensile deformation of substrate.
基于此模型，分析了受拉伸的层内混杂复合材料中某些纤维断裂后的应力重分布。
Based on the model, the stress redistributions due to the failure of some fibers in an intraply hybrid composite under tension are analyzed.
高温和室温的拉伸断裂应变小于0 .6 % ，不能有效地松弛材料切口处的应力集中。
All specimens′ fracture strain are less than 0.6%, it can not relax stress concentration at notch.
采用恒载荷和慢应变速率动态拉伸实验方法，测定了X80管道钢在不同充氢条件下的氢致开裂门槛应力和断裂应力。
The threshold stress and fracture stress of hydrogen-induced cracking of X80 pipeline steel are studied by constant load test and slow stain rate test.
采用恒载荷和慢应变速率动态拉伸实验方法，测定了X80管道钢在不同充氢条件下的氢致开裂门槛应力和断裂应力。
The threshold stress and fracture stress of hydrogen-induced cracking of X80 pipeline steel are studied by constant load test and slow stain rate test.
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