crack expansion

简明释义

裂纹扩张

英英释义

例句

1.The engineer conducted tests to measure the effects of temperature on crack expansion.

工程师进行了测试，以测量温度对裂缝扩展的影响。

2.To mitigate crack expansion, engineers often use flexible materials in their designs.

为了减轻裂缝扩展，工程师通常在设计中使用柔性材料。

3.Regular maintenance can help prevent crack expansion in concrete surfaces.

定期维护可以帮助防止混凝土表面的裂缝扩展。

4.The report highlighted how moisture can accelerate crack expansion in pavement.

报告强调了潮湿如何加速人行道的裂缝扩展。

5.In the construction industry, understanding crack expansion is crucial for ensuring structural integrity.

在建筑行业，理解裂缝扩展对确保结构完整性至关重要。

作文

Cracks in materials are a common phenomenon that can significantly affect the integrity and lifespan of structures. One important aspect to consider when dealing with cracks is the process of crack expansion, which refers to the growth or widening of existing cracks over time. Understanding this process is crucial for engineers and architects as it can lead to potential failures if not properly managed.The crack expansion process can be influenced by various factors, including environmental conditions, material properties, and the load applied to the structure. For instance, temperature fluctuations can cause materials to expand and contract, leading to the widening of cracks. Similarly, moisture ingress can weaken the surrounding material, making it more susceptible to further cracking and crack expansion.In concrete structures, crack expansion often occurs due to the natural aging process of the material. As concrete cures, it undergoes hydration, which can create internal stresses. Over time, these stresses may result in cracks, which can then expand under continued loading or environmental changes. This is particularly concerning in structures like bridges and buildings, where safety is paramount.To mitigate the risks associated with crack expansion, engineers often employ various techniques. One effective method is the use of crack fillers or sealants that can prevent moisture from entering the cracks, thereby reducing the likelihood of further expansion. Additionally, regular maintenance and inspections can help identify cracks early, allowing for timely repairs before they become a more significant issue.Another critical aspect of managing crack expansion is understanding the material properties involved. Different materials have varying tolerances to stress and environmental changes. For example, metals may experience fatigue cracking, while ceramics might be more prone to brittle fractures. By selecting appropriate materials and designing structures that account for potential crack expansion, engineers can enhance the durability and safety of their projects.In conclusion, crack expansion is a vital consideration in the field of engineering and construction. Understanding the factors that contribute to this phenomenon and implementing effective strategies to manage it can help ensure the longevity and safety of structures. As we continue to develop new materials and technologies, it is essential to remain vigilant about the potential for crack expansion and take proactive measures to address it. By doing so, we can create safer, more resilient structures that stand the test of time.

材料中的裂缝是一个常见现象，可能会显著影响结构的完整性和使用寿命。在处理裂缝时，一个重要的方面是裂缝扩展的过程，这指的是现有裂缝随时间增长或扩大的现象。理解这一过程对工程师和建筑师至关重要，因为如果不加以管理，可能会导致潜在的失败。裂缝扩展过程可能受多种因素的影响，包括环境条件、材料特性以及施加于结构上的负载。例如，温度波动可能导致材料膨胀和收缩，从而引起裂缝的扩大。同样，水分渗入可能削弱周围材料，使其更容易进一步开裂和裂缝扩展。在混凝土结构中，裂缝扩展通常由于材料的自然老化过程而发生。随着混凝土的固化，它经历水合反应，这可能产生内部应力。随着时间的推移，这些应力可能导致裂缝，而在持续负载或环境变化下，这些裂缝可能进一步扩展。这在桥梁和建筑等结构中尤为令人担忧，因为安全至关重要。为了减轻与裂缝扩展相关的风险，工程师通常采用各种技术。一种有效的方法是使用裂缝填充剂或密封剂，可以防止水分进入裂缝，从而降低进一步扩展的可能性。此外，定期维护和检查可以帮助及早发现裂缝，使其能够及时修复，以免问题变得更加严重。管理裂缝扩展的另一个关键方面是了解涉及的材料特性。不同材料对应力和环境变化的耐受性各不相同。例如，金属可能会经历疲劳裂纹，而陶瓷则可能更容易发生脆性断裂。通过选择适当的材料并设计考虑潜在裂缝扩展的结构，工程师可以增强项目的耐久性和安全性。总之，裂缝扩展是工程和建筑领域一个至关重要的考虑因素。理解导致这一现象的因素并实施有效的管理策略可以帮助确保结构的长期性和安全性。随着我们继续开发新材料和新技术，保持对裂缝扩展潜在风险的警惕，并采取主动措施来应对这一问题是至关重要的。通过这样做，我们可以创造出经得起时间考验的更安全、更具韧性的结构。