thermal shock crack

简明释义

热冲击裂纹

英英释义

例句

1.To prevent thermal shock cracks 热震裂纹, it's essential to allow materials to cool gradually.

为了防止出现热震裂纹，让材料逐渐冷却是至关重要的。

2.The sudden change in temperature caused a thermal shock crack 热震裂纹 in the glass vase.

温度的突然变化导致玻璃花瓶出现了一个热震裂纹。

3.A thermal shock crack 热震裂纹 can significantly weaken ceramic materials used in kilns.

在窑炉中使用的陶瓷材料可能会因出现热震裂纹而显著减弱。

4.The potter noticed a thermal shock crack 热震裂纹 after removing the pottery from the kiln too quickly.

陶工发现，在过快地从窑炉中取出陶器后，出现了一个热震裂纹。

5.Engineers must consider thermal shock cracks 热震裂纹 when designing components that will experience rapid heating and cooling.

工程师在设计会经历快速加热和冷却的部件时，必须考虑到热震裂纹。

作文

Thermal shock is a phenomenon that occurs when a material experiences a rapid change in temperature, leading to stress and potential failure. One common outcome of this process is the formation of a thermal shock crack, which can significantly compromise the integrity of various materials, especially ceramics and glass. Understanding the mechanics behind thermal shock cracks is crucial for engineers and designers who work with materials that are subject to extreme temperature fluctuations.When a material is subjected to sudden heating or cooling, different parts of the material expand or contract at different rates. This uneven distribution of thermal expansion creates internal stresses within the material. If these stresses exceed the material's strength, a thermal shock crack will form. These cracks can propagate quickly, leading to catastrophic failure of the component. For instance, in the case of glass cookware, if it is placed directly from the refrigerator into a hot oven, the sudden temperature change can cause a thermal shock crack to develop, rendering the dish unusable.The risk of thermal shock cracks is particularly relevant in industries such as aerospace, automotive, and construction, where materials must withstand harsh environmental conditions. Engineers often select materials based on their thermal properties to minimize the risk of such failures. For example, materials with low thermal conductivity are preferred in applications where rapid temperature changes are expected, as they can help to reduce the rate of heat transfer and thus lessen the likelihood of thermal shock.In addition to careful material selection, there are several techniques that can be used to mitigate the risk of thermal shock cracks. One approach is to design components that allow for gradual temperature changes. This can be achieved through the use of thermal barriers or insulation, which help to slow down the rate of heat transfer. Another method is to implement controlled heating and cooling processes during manufacturing and operation, ensuring that temperature changes occur at a manageable rate.Moreover, understanding the specific conditions that lead to thermal shock cracks can aid in developing better maintenance practices. Regular inspection of materials and components can help identify early signs of stress or damage, allowing for timely intervention before a complete failure occurs. In many cases, preventive measures can save both time and resources by avoiding the need for costly repairs or replacements.In conclusion, thermal shock cracks represent a significant challenge in material science and engineering. By comprehensively understanding the mechanisms that lead to these cracks and implementing effective strategies to mitigate their occurrence, industries can enhance the safety and reliability of their products. As technology continues to advance, ongoing research into materials that can better withstand thermal shock will be essential in pushing the boundaries of what is possible in various fields. Ultimately, the goal is to create materials that not only perform well under normal conditions but also exhibit resilience when faced with the unpredictable nature of temperature changes.

热冲击是指当材料经历温度快速变化时发生的一种现象，这会导致应力并可能导致失效。这个过程的一个常见结果是形成热冲击裂纹，这会显著损害各种材料的完整性，尤其是陶瓷和玻璃。理解热冲击裂纹背后的机制对于从事需要承受极端温度波动的材料的工程师和设计师来说至关重要。当材料受到突然加热或冷却时，材料的不同部分以不同的速率膨胀或收缩。这种热膨胀不均匀分布在材料内部产生了内应力。如果这些应力超过材料的强度，就会形成热冲击裂纹。这些裂纹可以迅速传播，导致组件的灾难性失效。例如，在玻璃炊具的情况下，如果将其直接从冰箱放入热烤箱，突然的温度变化可能会导致热冲击裂纹的形成，使得该器皿无法使用。热冲击裂纹的风险在航空航天、汽车和建筑等行业尤为相关，这些行业的材料必须承受严酷的环境条件。工程师通常根据材料的热性能进行选择，以最小化此类失效的风险。例如，在预计会发生快速温度变化的应用中，更倾向于选择热导率低的材料，因为它们可以帮助减缓热传递的速率，从而降低热冲击的可能性。除了仔细选择材料外，还有几种技术可以用来减轻热冲击裂纹的风险。一种方法是设计允许逐渐温度变化的组件。这可以通过使用热障或绝缘材料来实现，从而帮助减缓热传递的速率。另一种方法是在制造和操作过程中实施受控的加热和冷却过程，以确保温度变化以可控的速率发生。此外，了解导致热冲击裂纹的特定条件可以有助于制定更好的维护实践。定期检查材料和组件可以帮助识别早期的应力或损伤迹象，从而在完全失效之前及时干预。在许多情况下，预防措施可以节省时间和资源，避免昂贵的维修或更换。总之，热冲击裂纹在材料科学和工程中代表了一个重大挑战。通过全面理解导致这些裂纹的机制并实施有效的策略来减轻其发生，各行业可以增强其产品的安全性和可靠性。随着技术的不断进步，持续研究能够更好地抵御热冲击的材料将在推动各个领域的可能性边界方面至关重要。最终目标是创造出不仅在正常条件下表现良好，而且在面对温度变化的不可预测性时也能展现韧性的材料。