fatigue failure

简明释义

疲劳破裂

英英释义

例句

1.The engineer warned that the bridge could be at risk of fatigue failure due to repeated heavy traffic.

工程师警告说，由于频繁的重型交通，这座桥可能面临疲劳破坏的风险。

2.The aircraft design was modified to enhance resistance against fatigue failure during flight.

飞机设计经过修改，以增强其在飞行过程中抵抗疲劳破坏的能力。

3.During the testing phase, we discovered that the metal component experienced fatigue failure after thousands of cycles.

在测试阶段，我们发现金属部件在经过数千个循环后经历了疲劳破坏。

4.Engineers used advanced materials to reduce the likelihood of fatigue failure in the turbine blades.

工程师使用先进材料来降低涡轮叶片发生疲劳破坏的可能性。

5.To prevent fatigue failure, regular inspections should be conducted on critical structures.

为了防止疲劳破坏，应定期对关键结构进行检查。

作文

Fatigue failure is a critical concept in engineering and materials science that refers to the progressive and localized structural damage that occurs when a material is subjected to cyclic loading. Unlike sudden failures that happen due to excessive stress or impact, fatigue failure 疲劳破坏 is a gradual process that can often go unnoticed until it is too late. Understanding this phenomenon is essential for designing safe and reliable structures, especially in industries such as aerospace, automotive, and civil engineering.The mechanism of fatigue failure 疲劳破坏 involves the initiation of cracks at points of high stress concentration. These points can be caused by various factors, including surface imperfections, geometric discontinuities, or inherent material weaknesses. As the material is subjected to repeated loading cycles, these small cracks can grow incrementally with each cycle, eventually leading to a complete fracture of the component.One of the most significant challenges with fatigue failure 疲劳破坏 is that it is often unpredictable. Engineers may design components to withstand specific loads based on static analysis; however, the dynamic nature of real-world applications means that components can experience varying loads over time. This variability can lead to unexpected fatigue life, making it crucial to incorporate safety factors into design calculations.To mitigate the risks associated with fatigue failure 疲劳破坏, engineers employ several strategies during the design and manufacturing processes. One common approach is to select materials with high fatigue resistance. Materials such as titanium and certain alloys are known for their ability to withstand cyclic loading without significant degradation. Additionally, surface treatments like shot peening or hardening can improve the fatigue life of components by enhancing their surface properties and reducing stress concentrations.Another effective strategy is to conduct thorough testing and analysis. Engineers often perform fatigue tests in controlled environments to simulate real-life conditions. By applying cyclic loads to test specimens, they can determine the material's fatigue limit and predict its lifespan under specific loading conditions. This data is invaluable for making informed design decisions and ensuring that components will perform reliably over their intended service life.In conclusion, understanding fatigue failure 疲劳破坏 is vital for engineers and designers who aim to create safe and durable structures. By recognizing the mechanisms behind this type of failure and implementing appropriate design strategies, it is possible to significantly reduce the risk of catastrophic failures in critical applications. Continuous research and development in materials science will further enhance our ability to predict and prevent fatigue failure 疲劳破坏, ultimately leading to safer and more efficient engineering practices.

疲劳破坏是工程和材料科学中的一个关键概念，指的是当材料受到循环载荷时发生的渐进和局部结构损伤。与因过度应力或冲击而突然发生的故障不同，疲劳破坏 疲劳破坏 是一个逐渐的过程，通常在为时已晚之前难以察觉。理解这一现象对于设计安全可靠的结构至关重要，尤其是在航空航天、汽车和土木工程等行业中。疲劳破坏 疲劳破坏 的机制涉及在高应力集中点处裂纹的产生。这些点可能由各种因素引起，包括表面缺陷、几何不连续性或固有材料弱点。当材料受到重复加载周期时，这些小裂纹可以随着每个周期逐渐增长，最终导致组件的完全断裂。与疲劳破坏 疲劳破坏 相关的一个重大挑战是，它通常是不可预测的。工程师可能根据静态分析设计组件以承受特定载荷；然而，现实应用的动态性质意味着组件可能会随着时间的推移经历变化的载荷。这种变异性可能导致意想不到的疲劳寿命，因此在设计计算中纳入安全系数至关重要。为了减轻与疲劳破坏 疲劳破坏 相关的风险，工程师在设计和制造过程中采用多种策略。一种常见的方法是选择具有高疲劳抗力的材料。钛金属和某些合金等材料因其能够在没有显著降解的情况下承受循环载荷而闻名。此外，喷丸处理或硬化等表面处理可以通过增强组件的表面特性和减少应力集中来提高疲劳寿命。另一种有效的策略是进行全面的测试和分析。工程师通常在受控环境中进行疲劳测试，以模拟实际条件。通过对测试样品施加循环载荷，他们可以确定材料的疲劳极限，并预测其在特定载荷条件下的使用寿命。这些数据对于做出明智的设计决策和确保组件在预期服务寿命内可靠运行至关重要。总之，理解疲劳破坏 疲劳破坏 对于希望创建安全耐用结构的工程师和设计师至关重要。通过认识到这种故障类型背后的机制并实施适当的设计策略，可以显著降低关键应用中灾难性故障的风险。材料科学的持续研究和开发将进一步增强我们预测和防止疲劳破坏 疲劳破坏 的能力，最终导致更安全和更高效的工程实践。