thermal fatigue

简明释义

热疲劳

英英释义

例句

1.The bridge's steel structure showed signs of thermal fatigue 热疲劳 after decades of temperature fluctuations.

经过数十年的温度波动，桥梁的钢结构出现了热疲劳的迹象。

2.The failure of the turbine was attributed to thermal fatigue 热疲劳 after years of operation.

经过多年的运行，涡轮的故障归因于热疲劳。

3.The engine components are prone to thermal fatigue 热疲劳 due to repeated heating and cooling cycles.

由于反复的加热和冷却循环，发动机部件容易出现热疲劳。

4.Thermal cycling tests are essential to evaluate the thermal fatigue 热疲劳 resistance of new alloys.

热循环测试对于评估新合金的热疲劳抗性至关重要。

5.Engineers must consider thermal fatigue 热疲劳 when designing high-performance materials for aerospace applications.

在为航空航天应用设计高性能材料时，工程师必须考虑热疲劳。

作文

Thermal fatigue is a phenomenon that occurs in materials when they are subjected to repeated cycles of heating and cooling. This process can lead to the development of cracks and eventual failure of the material. Understanding thermal fatigue (热疲劳) is essential in fields such as engineering, manufacturing, and materials science, where components are often exposed to fluctuating temperatures. In many industrial applications, components must withstand extreme temperature variations. For example, aircraft engines experience significant thermal stresses during operation. As the engine heats up, the materials expand, and when it cools down, they contract. Over time, these repeated cycles can weaken the material, leading to thermal fatigue (热疲劳). Engineers must consider this factor when designing parts to ensure they can endure the operational conditions without failing.The mechanisms behind thermal fatigue (热疲劳) involve several factors including the material's properties, the magnitude of temperature changes, and the number of cycles experienced. Different materials respond differently to thermal stress; for instance, metals may exhibit ductility while ceramics may become brittle under similar conditions. This variability necessitates careful selection of materials based on the specific application and operating environment.To mitigate the effects of thermal fatigue (热疲劳), engineers employ various strategies. One common approach is to use materials that have higher resistance to thermal cycling. Advanced alloys and composites are often developed to enhance durability. Additionally, design modifications such as incorporating thermal barriers or using coatings can help protect components from rapid temperature changes, thereby reducing the risk of thermal fatigue (热疲劳).Testing for thermal fatigue (热疲劳) is also crucial in the development phase of new materials and components. By simulating the operational conditions, engineers can observe how materials behave under cyclic thermal loads. This testing helps identify potential weaknesses and allows for improvements before the materials are put into service.In conclusion, thermal fatigue (热疲劳) is an important consideration in the design and application of materials subjected to thermal cycling. Its implications extend across various industries, influencing the safety and reliability of products. By understanding the mechanisms of thermal fatigue (热疲劳) and employing appropriate strategies to combat it, engineers can enhance the performance of critical components and ensure their longevity in demanding environments.