thermal crack

简明释义

热裂缝

英英释义

例句

1.During the inspection, we found several thermal cracks 热裂缝 in the concrete pavement that needed immediate repair.

在检查中，我们发现混凝土路面上有几个热裂缝需要立即修复。

2.The engineer noted that the bridge had developed a thermal crack 热裂缝 due to extreme temperature fluctuations.

工程师注意到这座桥因温度极端波动而出现了一个热裂缝。

3.Engineers are studying how to prevent thermal cracks 热裂缝 in asphalt during hot summer months.

工程师们正在研究如何防止在炎热夏季出现热裂缝。

4.The presence of thermal cracks 热裂缝 in the foundation can lead to serious structural issues.

基础中的热裂缝可能导致严重的结构问题。

5.The thermal crack 热裂缝 in the ceramic tile was a result of rapid cooling after installation.

瓷砖中的热裂缝是安装后迅速降温造成的。

作文

Thermal stress is a common phenomenon that occurs in various materials when they are subjected to temperature changes. One of the most significant consequences of thermal stress is the formation of what is known as a thermal crack. A thermal crack refers to a fracture that develops in a material due to the expansion and contraction caused by temperature fluctuations. This issue is particularly prevalent in construction materials such as concrete, metals, and ceramics, which are often exposed to varying environmental conditions.When materials heat up, they expand. Conversely, when they cool down, they contract. If these changes happen rapidly or if the material is constrained in some way, the internal stresses can exceed the material's strength, leading to the formation of cracks. These cracks can compromise the integrity of structures, making it essential for engineers and architects to consider thermal stress in their designs.For example, in the case of concrete, a thermal crack can occur during the curing process when the temperature changes significantly. If the outer surface of the concrete cools faster than the inner part, the resulting tension can lead to cracks on the surface. This not only affects the aesthetic appearance of the concrete but also reduces its structural strength, potentially leading to more severe damage over time.In addition to concrete, metals are also susceptible to thermal cracks. When metals are heated and then cooled rapidly, as in welding processes, the sudden temperature change can create large thermal gradients. This uneven heating and cooling can cause the metal to warp or crack, which can be detrimental in critical applications like aerospace and automotive engineering.To mitigate the risks associated with thermal cracks, various strategies can be employed. One effective method is to control the rate of heating and cooling during manufacturing and construction processes. Gradual temperature changes allow materials to expand and contract uniformly, reducing the likelihood of stress concentrations that lead to cracking.Another approach is to use materials that are more resistant to thermal stress. For instance, composite materials or specially formulated concrete can withstand temperature variations better than traditional materials. Engineers may also incorporate expansion joints in structures to accommodate movement caused by temperature changes, thereby minimizing the risk of thermal cracks.In conclusion, understanding the concept of thermal cracks is crucial for anyone involved in material science, engineering, or construction. By recognizing how temperature fluctuations can lead to these fractures, professionals can take proactive measures to prevent them, ensuring the longevity and safety of structures. As climate change continues to affect global temperatures, the importance of addressing thermal stress in materials will only grow, making it an essential consideration in future designs and constructions.

热应力是材料在温度变化时常见的现象。热应力的一个重要后果是形成所谓的热裂缝。热裂缝指的是由于温度波动引起的膨胀和收缩而在材料中产生的裂纹。这个问题在建筑材料中尤为突出，如混凝土、金属和陶瓷，这些材料常常暴露在不同的环境条件下。当材料加热时，它们会膨胀。相反，当它们冷却时，它们会收缩。如果这些变化发生得很快，或者材料在某种程度上受到限制，内部应力就可能超过材料的强度，导致裂纹的形成。这些裂纹可能会损害结构的完整性，因此工程师和建筑师在设计时必须考虑热应力。例如，在混凝土的情况下，热裂缝可能在固化过程中发生，当温度显著变化时。如果混凝土的外表面冷却速度快于内部部分，所产生的张力可能导致表面出现裂缝。这不仅影响混凝土的美观，还降低其结构强度，可能导致随着时间的推移更严重的损坏。除了混凝土，金属也容易受到热裂缝的影响。当金属被快速加热然后冷却时，例如在焊接过程中，突如其来的温度变化可能会产生大的热梯度。这种不均匀的加热和冷却可能导致金属变形或开裂，这在航空航天和汽车工程等关键应用中是非常有害的。为了减轻与热裂缝相关的风险，可以采取各种策略。一种有效的方法是在制造和施工过程中控制加热和冷却的速度。逐渐的温度变化使材料能够均匀地膨胀和收缩，从而减少导致开裂的应力集中。另一种方法是使用对热应力更具抵抗力的材料。例如，复合材料或特别配方的混凝土比传统材料能更好地承受温度变化。工程师还可以在结构中加入伸缩缝，以适应因温度变化引起的运动，从而最大限度地减少热裂缝的风险。总之，理解热裂缝的概念对任何涉及材料科学、工程或建筑的人来说都是至关重要的。通过认识到温度波动如何导致这些裂纹，专业人士可以采取主动措施来防止它们，从而确保结构的耐久性和安全性。随着气候变化持续影响全球温度，解决材料中的热应力的重要性只会增加，使其成为未来设计和施工中的一个重要考虑因素。