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问:什么是材料疲劳?为什么说材料疲劳是汽车安全的大敌?答:我们都知道,汽车故障的原因很多,但其中有一种是使用者根本无法控制的,这就是由材料疲劳引起的结构件失效。金属材料的疲劳就是零件在受到超强作用力时可以发生变形或断裂,就像人体遭受袭击时可以发生骨折,但这不是疲劳破坏。疲劳失效是指材料在正常工作情况下,在长期反复作用的应力下所发生的性能变化。这些应力的大小并没有超出材料能够承受的范围,但是长期反复的作用就会引起材料的疲劳,材料的疲劳破
Q: What is material fatigue? Why is material fatigue the enemy of car safety? A: We all know that there are many reasons for car failure, but one of them is beyond the control of the user. This is the structure caused by material fatigue Failed. The fatigue of metallic materials is that the parts can be deformed or broken when they are subjected to super-force, just as fractures can occur when the human body is attacked, but this is not fatigue damage. Fatigue failure refers to the material under normal conditions, the long-term repeated under the effect of stress changes in performance. The size of these stresses does not exceed the scope of the material can withstand, but the long-term repeated effects will lead to material fatigue, material fatigue