fatigue failure

简明释义

疲劳破坏

英英释义

例句

1.In aerospace engineering, fatigue failure 疲劳失效 is a critical concern for aircraft components during repeated flight cycles.

在航空航天工程中，疲劳失效是飞机部件在重复飞行周期中一个关键问题。

2.Regular maintenance can help prevent fatigue failure 疲劳失效 in machinery and extend its lifespan.

定期维护可以帮助防止机械中的疲劳失效并延长其使用寿命。

3.The team analyzed the data and concluded that the fatigue failure 疲劳失效 occurred after 10,000 load cycles.

团队分析了数据，得出结论，疲劳失效发生在10,000次加载循环之后。

4.The engineer explained that the bridge's collapse was due to fatigue failure 疲劳失效 after years of heavy traffic.

工程师解释说，桥梁的倒塌是由于经过多年重载交通导致的疲劳失效。

5.Manufacturers conduct tests to determine the fatigue failure 疲劳失效 limits of materials used in production.

制造商进行测试以确定生产中使用材料的疲劳失效极限。

作文

Fatigue failure is a critical concept in engineering and materials science that refers to the progressive structural damage that occurs when a material is subjected to cyclic loading. This phenomenon can lead to catastrophic failures, making it essential for engineers to understand the underlying principles of fatigue failure (疲劳破坏). In this essay, we will explore the mechanisms behind fatigue failure (疲劳破坏), its implications in various fields, and the strategies employed to mitigate its effects.The process of fatigue failure (疲劳破坏) begins with the initiation of microscopic cracks in a material under repeated stress. These cracks can develop even if the applied loads are below the material's ultimate tensile strength. Over time, as the loading cycles continue, these cracks grow larger until they reach a critical size, at which point the material can no longer sustain the applied load, resulting in sudden and often unpredictable failure.One of the most common examples of fatigue failure (疲劳破坏) can be observed in metal components used in machinery. For instance, consider a rotating shaft in a motor. As the shaft spins, it experiences alternating stresses due to the forces acting on it. If these stresses are repeated over millions of cycles, tiny cracks may begin to form at stress concentration points, such as notches or surface imperfections. Eventually, these cracks can propagate, leading to a complete fracture of the shaft, which could cause significant damage to the entire machine.The implications of fatigue failure (疲劳破坏) extend beyond just mechanical systems; it also poses risks in civil engineering, aerospace, and automotive industries. For example, in the aerospace sector, components like aircraft wings and fuselage structures are subjected to cyclic loads during flight. Engineers must account for fatigue failure (疲劳破坏) when designing these structures to ensure they can withstand the rigors of repeated takeoff and landing without compromising safety.To combat fatigue failure (疲劳破坏), several strategies can be employed. One effective approach is to improve material properties through processes such as heat treatment, which can enhance the strength and toughness of metals, making them more resistant to crack initiation and growth. Additionally, surface treatments like shot peening can introduce compressive residual stresses that help inhibit crack propagation.Another important method is to design components with a focus on reducing stress concentrations. This can involve using fillets instead of sharp corners, optimizing geometric shapes, and ensuring that surface finishes are smooth to minimize the chances of crack initiation. Furthermore, regular inspection and maintenance of critical components can help detect early signs of fatigue failure (疲劳破坏) before they lead to catastrophic outcomes.In conclusion, understanding fatigue failure (疲劳破坏) is vital for engineers and designers across various industries. By recognizing the mechanisms that lead to this type of failure and implementing effective design and maintenance strategies, we can significantly reduce the risks associated with cyclic loading. Ultimately, a proactive approach to managing fatigue failure (疲劳破坏) not only enhances the safety and reliability of structures and components but also contributes to the longevity and efficiency of engineering systems.