thermal fatigue fracture

简明释义

热疲劳断裂

英英释义

例句

1.To prevent thermal fatigue fracture, engineers must carefully select materials that can withstand temperature fluctuations.

为了防止热疲劳断裂，工程师必须仔细选择能够承受温度波动的材料。

2.The research focused on how thermal fatigue fracture occurs in steel components subjected to extreme heat cycles.

该研究集中于钢构件在极端热循环下如何发生热疲劳断裂。

3.In high-temperature applications, thermal fatigue fracture can significantly reduce the lifespan of materials.

在高温应用中，热疲劳断裂会显著缩短材料的使用寿命。

4.The engineer explained that the failure of the turbine blade was due to thermal fatigue fracture, which means it broke down from repeated thermal stress.

工程师解释说，涡轮叶片的失效是由于热疲劳断裂，这意味着它因反复的热应力而破裂。

5.During the inspection, we found several signs of thermal fatigue fracture in the exhaust system.

在检查过程中，我们发现排气系统中有几个热疲劳断裂的迹象。

作文

Thermal fatigue fracture is a phenomenon that occurs when materials are subjected to repeated heating and cooling cycles. This type of fracture is particularly significant in engineering applications where components are exposed to thermal stresses. For instance, in the automotive and aerospace industries, parts such as turbine blades and exhaust systems experience extreme temperature variations during operation. Understanding the mechanisms behind thermal fatigue fracture (热疲劳断裂) is crucial for engineers to design more durable and reliable components.The process of thermal fatigue fracture (热疲劳断裂) begins with the expansion and contraction of materials as they heat up and cool down. When a material is heated, it expands, and when it cools, it contracts. These repetitive changes can create internal stresses within the material. If the stress exceeds the material's strength, microscopic cracks may begin to form. Over time, these cracks can grow and propagate, ultimately leading to a catastrophic failure of the component.One of the primary factors influencing thermal fatigue fracture (热疲劳断裂) is the material's thermal conductivity. Materials with high thermal conductivity can dissipate heat quickly, reducing the thermal gradients that lead to stress concentrations. Conversely, materials with low thermal conductivity tend to retain heat, which can exacerbate thermal stresses. Therefore, selecting the right material for specific applications is vital to minimize the risk of thermal fatigue fracture (热疲劳断裂).In addition to material selection, the design of components also plays a significant role in preventing thermal fatigue fracture (热疲劳断裂). Engineers often incorporate features such as fillets or radii in their designs to reduce stress concentrations. Furthermore, the use of coatings can provide thermal barriers that help manage temperature fluctuations and protect the underlying material from direct thermal exposure.Testing and analysis are essential for understanding how materials behave under thermal cycling conditions. Techniques such as thermographic imaging and finite element analysis allow engineers to visualize temperature distributions and stress levels within components. By simulating real-world operating conditions, engineers can predict the likelihood of thermal fatigue fracture (热疲劳断裂) and make informed decisions about design modifications or material choices.In conclusion, thermal fatigue fracture (热疲劳断裂) is a critical consideration in the design and engineering of components subjected to thermal cycling. By understanding the underlying mechanisms, selecting appropriate materials, and implementing effective design strategies, engineers can significantly reduce the risk of failure. Continued research and development in this field will contribute to creating safer and more efficient technologies across various industries.