thermal stress fatigue

简明释义

热应力疲劳

英英释义

例句

1.The research focused on how thermal stress fatigue 热应力疲劳 affects the performance of high-temperature alloys.

研究集中在热应力疲劳 热应力疲劳如何影响高温合金的性能。

2.Manufacturers must consider thermal stress fatigue 热应力疲劳 when designing components for engines.

制造商在设计发动机部件时必须考虑热应力疲劳 热应力疲劳。

3.The failure analysis revealed that thermal stress fatigue 热应力疲劳 was the primary cause of the crack.

故障分析显示，热应力疲劳 热应力疲劳是裂纹的主要原因。

4.The engineers conducted tests to measure the effects of thermal stress fatigue 热应力疲劳 on the new material.

工程师们进行了测试，以测量新材料的热应力疲劳 热应力疲劳的影响。

5.Understanding thermal stress fatigue 热应力疲劳 is crucial for improving the lifespan of aircraft components.

理解热应力疲劳 热应力疲劳对提高飞机部件的使用寿命至关重要。

作文

Thermal stress fatigue is a critical phenomenon that engineers and material scientists must consider when designing structures and components exposed to varying temperatures. This term refers to the weakening of materials due to repeated cycles of thermal stress, which can lead to cracks and ultimately failure. Understanding thermal stress fatigue (热应力疲劳) is essential for ensuring the longevity and reliability of mechanical systems, especially in industries such as aerospace, automotive, and power generation.When materials are subjected to temperature changes, they expand and contract. This expansion and contraction create internal stresses within the material. If these temperature changes occur frequently or are extreme, the material may not have enough time to relax between cycles, leading to a build-up of stress. Over time, this can cause microscopic cracks to form, which can propagate and result in catastrophic failure if not addressed.One of the most significant challenges in predicting thermal stress fatigue (热应力疲劳) is the variability in material properties. Different materials respond differently to thermal cycling. For instance, metals typically have a high thermal conductivity and can dissipate heat quickly, while ceramics may be more brittle and susceptible to cracking under thermal stress. Engineers must carefully select materials based on their thermal properties and the specific conditions they will face in service.In addition to material selection, the design of components plays a crucial role in mitigating thermal stress fatigue (热应力疲劳). Engineers often employ techniques such as adding fillets to sharp corners, using thicker sections in areas expected to experience high stress, and incorporating thermal barriers to reduce temperature gradients. These design strategies help distribute thermal loads more evenly and minimize the risk of localized stress concentrations that can lead to failure.Another important aspect of managing thermal stress fatigue (热应力疲劳) is the use of predictive maintenance and monitoring technologies. By employing sensors and data analysis tools, engineers can monitor the condition of components in real-time, allowing them to identify potential issues before they lead to failure. This proactive approach not only enhances safety but also reduces downtime and maintenance costs.Research into thermal stress fatigue (热应力疲劳) continues to evolve, with advancements in materials science leading to the development of new alloys and composites that exhibit improved resistance to thermal cycling. These innovations are particularly important in high-performance applications where failure is not an option.In conclusion, understanding thermal stress fatigue (热应力疲劳) is vital for engineers and designers who aim to create safe and durable products. By considering the effects of thermal cycling on materials and implementing effective design and monitoring strategies, it is possible to enhance the performance and lifespan of various components. As technology progresses, the ability to predict and manage thermal stress fatigue (热应力疲劳) will undoubtedly become even more sophisticated, paving the way for safer and more efficient engineering solutions.

热应力疲劳是工程师和材料科学家在设计暴露于不同温度的结构和组件时必须考虑的一个重要现象。这个术语指的是由于重复的热应力循环而导致材料的弱化，这可能导致裂纹并最终导致失效。理解热应力疲劳（thermal stress fatigue）对于确保机械系统的耐久性和可靠性至关重要，尤其是在航空航天、汽车和发电等行业。当材料受到温度变化的影响时，它们会膨胀和收缩。这种膨胀和收缩在材料内部产生了内应力。如果这些温度变化频繁或极端，材料可能没有足够的时间在循环之间放松，从而导致应力的积累。随着时间的推移，这可能导致微观裂纹的形成，这些裂纹可能传播并导致灾难性的故障，如果不加以处理。预测热应力疲劳（thermal stress fatigue）的一个重大挑战是材料特性的变化。不同的材料对热循环的反应不同。例如，金属通常具有较高的热导率，能够迅速散热，而陶瓷可能更脆弱，在热应力下更容易发生裂纹。工程师必须根据材料的热性能以及它们在服务中面临的具体条件仔细选择材料。除了材料选择外，组件的设计在减轻热应力疲劳（thermal stress fatigue）方面也发挥着至关重要的作用。工程师通常采用诸如在尖锐角落添加圆角、在预计承受高应力的区域使用更厚的截面以及结合热障来减少温度梯度等技术。这些设计策略有助于更均匀地分配热负荷，最小化可能导致失效的局部应力集中风险。管理热应力疲劳（thermal stress fatigue）的另一个重要方面是使用预测性维护和监测技术。通过采用传感器和数据分析工具，工程师可以实时监控组件的状况，使他们能够在问题导致失效之前识别潜在问题。这种主动的方法不仅增强了安全性，还降低了停机时间和维护成本。对热应力疲劳（thermal stress fatigue）的研究持续发展，材料科学的进步导致开发出新合金和复合材料，这些材料在热循环中表现出更好的抗性。这些创新在高性能应用中尤为重要，因为在这些情况下，失效不是一个选项。总之，理解热应力疲劳（thermal stress fatigue）对于旨在创造安全和耐用产品的工程师和设计师至关重要。通过考虑热循环对材料的影响，并实施有效的设计和监测策略，可以增强各种组件的性能和寿命。随着技术的进步，预测和管理热应力疲劳（thermal stress fatigue）的能力无疑将变得更加复杂，为更安全和更高效的工程解决方案铺平道路。