thermal fatigue

简明释义

热疲劳

英英释义

例句

1.The failure of the turbine was attributed to thermal fatigue 热疲劳 caused by repeated heating and cooling cycles.

涡轮的故障归因于由于反复加热和冷却循环引起的热疲劳。

2.To prevent thermal fatigue 热疲劳, regular maintenance checks are essential for high-performance engines.

为了防止热疲劳，对高性能发动机进行定期维护检查是必不可少的。

3.The engine components are designed to withstand thermal fatigue 热疲劳 during extreme temperature fluctuations.

发动机部件设计用于承受极端温度波动下的热疲劳。

4.The design of the heat exchanger must account for thermal fatigue 热疲劳 due to constant thermal cycling.

热交换器的设计必须考虑由于持续的热循环而导致的热疲劳。

5.Engineers must consider thermal fatigue 热疲劳 when selecting materials for high-temperature applications.

工程师在选择高温应用材料时必须考虑热疲劳。

作文

Thermal fatigue is a crucial concept in materials science and engineering, particularly when it comes to the performance and longevity of materials exposed to varying temperatures. In essence, thermal fatigue (热疲劳) refers to the progressive and localized structural damage that occurs when a material is subjected to cyclic thermal loading. This phenomenon can lead to the formation of cracks and ultimately result in failure if not properly managed. Understanding thermal fatigue (热疲劳) is essential for engineers and designers who work with materials in environments where temperature fluctuations are common.One of the primary reasons why thermal fatigue (热疲劳) is so significant is due to the increasing reliance on advanced materials in high-performance applications. For instance, aerospace components, automotive parts, and power generation equipment often experience extreme temperature changes during operation. These temperature variations can induce stresses within the material, leading to the initiation of cracks over time. Engineers must account for thermal fatigue (热疲劳) when designing these components to ensure they can withstand the operational demands without failing prematurely.The mechanisms behind thermal fatigue (热疲劳) involve several factors, including the material's thermal expansion properties, its mechanical strength, and the rate at which temperature changes occur. When a material is heated, it expands; conversely, it contracts when cooled. Repeated cycles of heating and cooling create stress concentrations that can exceed the material's yield strength, resulting in microstructural changes and crack propagation. Over time, this leads to a reduction in the material's integrity, ultimately causing failure.To mitigate the effects of thermal fatigue (热疲劳), engineers often employ various strategies. One approach is to select materials that exhibit better resistance to thermal cycling. For example, certain alloys and composites are designed specifically to withstand high-temperature environments, thereby reducing the likelihood of thermal fatigue (热疲劳). Additionally, careful consideration of the design can help distribute stresses more evenly throughout the component, minimizing localized stress concentrations that contribute to crack formation.Another important aspect of managing thermal fatigue (热疲劳) is the implementation of regular maintenance and inspection protocols. By monitoring the condition of components that are susceptible to thermal cycling, engineers can identify potential issues before they lead to catastrophic failures. Techniques such as non-destructive testing (NDT) can be employed to detect early signs of cracking or other forms of damage, allowing for timely repairs or replacements.In conclusion, thermal fatigue (热疲劳) is a critical factor that engineers must consider when designing and maintaining materials for applications subject to temperature fluctuations. Its implications for material performance and safety cannot be overstated, as neglecting to address thermal fatigue (热疲劳) can result in severe consequences, including equipment failure and safety hazards. As technology continues to advance and materials become more sophisticated, a deeper understanding of thermal fatigue (热疲劳) will be essential for ensuring the reliability and durability of modern engineering solutions.

热疲劳是材料科学和工程中的一个重要概念，尤其是在涉及到暴露于不同温度下的材料的性能和寿命时。简单来说，热疲劳（thermal fatigue）指的是当材料经历循环热载荷时发生的逐渐和局部的结构损伤。这种现象可能导致裂纹的形成，并最终在未得到妥善管理的情况下导致失效。理解热疲劳（thermal fatigue）对从事与温度波动环境中材料工作工程师和设计师至关重要。热疲劳（thermal fatigue）之所以如此重要，主要是因为对高性能应用中先进材料的日益依赖。例如，航空航天部件、汽车零件和发电设备在运行过程中往往会经历极端的温度变化。这些温度变化可以在材料内部引发应力，导致随着时间的推移裂纹的产生。工程师在设计这些部件时必须考虑热疲劳（thermal fatigue），以确保它们能够承受操作要求，而不会过早失效。热疲劳（thermal fatigue）背后的机制涉及多个因素，包括材料的热膨胀特性、机械强度以及温度变化发生的速率。当材料被加热时，它会膨胀；相反，当冷却时，它会收缩。加热和冷却的重复循环会产生应力集中，这可能超过材料的屈服强度，从而导致微观结构的变化和裂纹的扩展。随着时间的推移，这会导致材料完整性的降低，最终导致失效。为了减轻热疲劳（thermal fatigue）的影响，工程师通常采用各种策略。一种方法是选择对热循环表现出更好抵抗能力的材料。例如，某些合金和复合材料专门设计用于承受高温环境，从而减少热疲劳（thermal fatigue）的可能性。此外，仔细考虑设计可以帮助在部件中更均匀地分配应力，最小化导致裂纹形成的局部应力集中。管理热疲劳（thermal fatigue）的另一个重要方面是实施定期维护和检查协议。通过监测易受热循环影响的部件的状况，工程师可以在潜在问题导致灾难性故障之前识别出来。无损检测（NDT）等技术可以用于检测裂纹或其他损伤的早期迹象，从而允许及时修复或更换。总之，热疲劳（thermal fatigue）是工程师在设计和维护易受温度波动影响的材料时必须考虑的关键因素。它对材料性能和安全性的影响不容小觑，因为忽视热疲劳（thermal fatigue）可能导致严重后果，包括设备故障和安全隐患。随着技术的不断进步和材料的日益复杂，对热疲劳（thermal fatigue）的深入理解将对确保现代工程解决方案的可靠性和耐用性至关重要。