cycles to failure

简明释义

疲劳破坏周期数

英英释义

例句

1.The engineer conducted tests to determine the number of cycles to failure for the material used in the bridge.

工程师进行了测试，以确定桥梁中使用的材料的失效循环次数。

2.In fatigue testing, we measure the cycles to failure to assess the durability of the alloy.

在疲劳测试中，我们测量失效循环次数以评估合金的耐用性。

3.The manufacturer improved the design after realizing the cycles to failure were too low for their product.

制造商在意识到其产品的失效循环次数过低后改进了设计。

4.The research focused on increasing the cycles to failure through advanced material treatments.

研究集中在通过先进的材料处理来增加失效循环次数。

5.Understanding the cycles to failure is crucial for predicting the lifespan of mechanical components.

理解失效循环次数对于预测机械部件的使用寿命至关重要。

作文

In the world of engineering and material science, the term cycles to failure refers to the number of loading cycles a material can withstand before it ultimately fails. This concept is crucial in various applications, including the design of bridges, aircraft, and machinery where fatigue failure can lead to catastrophic consequences. Understanding cycles to failure allows engineers to predict how long a component will last under repeated stress, which is essential for ensuring safety and reliability.Materials are subjected to different types of stresses, such as tensile, compressive, and shear forces. Over time, these stresses can cause microscopic cracks to form within the material. As the number of loading cycles increases, these cracks can grow larger until they reach a critical size, leading to failure. The relationship between the number of cycles and the stress level is often represented in a S-N curve, which plots the stress amplitude against the number of cycles to failure.For example, consider the case of an aircraft wing. It undergoes thousands of loading cycles during its service life due to the aerodynamic forces acting on it. Engineers must account for the cycles to failure when designing the wing to ensure it can endure these forces without failing. If the wing is not designed with sufficient strength or if it is made from a material with a low fatigue limit, it could fail after a certain number of cycles, potentially leading to disastrous outcomes.Furthermore, the concept of cycles to failure is not only relevant in high-stakes industries like aerospace but also in everyday products. For instance, the hinges on a laptop undergo numerous opening and closing cycles. Manufacturers must consider the cycles to failure of these hinges to ensure that the laptop remains functional for a reasonable period. If the hinges fail prematurely, it can lead to dissatisfaction among consumers and tarnish the brand's reputation.To effectively analyze cycles to failure, engineers employ various testing methods, including fatigue testing, where samples are subjected to controlled cyclic loading until failure occurs. This data helps in determining the fatigue life of materials and informs decisions about material selection and design modifications.Moreover, advances in technology have led to the development of new materials with enhanced fatigue resistance. Composite materials, for example, have become popular in aerospace applications due to their high strength-to-weight ratio and superior fatigue properties. By utilizing such materials, engineers can increase the cycles to failure of components, thereby improving overall performance and safety.In conclusion, understanding the concept of cycles to failure is vital for engineers across various fields. It enables them to design safer, more reliable structures and products by predicting how materials will behave under repeated stress. As technology continues to evolve, the study of cycles to failure will remain a fundamental aspect of engineering, ensuring that materials can withstand the demands placed upon them throughout their service life.

在工程和材料科学领域，术语cycles to failure指的是材料在最终失效之前能够承受的加载循环次数。这个概念在各种应用中至关重要，包括桥梁、飞机和机械的设计，因为疲劳失效可能导致灾难性后果。理解cycles to failure可以让工程师预测在重复应力下组件的使用寿命，这对确保安全和可靠性至关重要。材料会受到不同类型的应力，如拉伸、压缩和剪切力。随着时间的推移，这些应力可能导致材料内部形成微观裂纹。随着加载循环次数的增加，这些裂纹可能会变大，直到达到临界尺寸，从而导致失效。循环次数与应力水平之间的关系通常在S-N曲线上表示，该曲线绘制了应力幅值与失效循环次数的关系。例如，考虑飞机机翼的情况。由于作用于机翼的空气动力学力，它在服役期间经历数千次加载循环。工程师必须在设计机翼时考虑cycles to failure，以确保它能够承受这些力量而不发生失效。如果机翼的设计强度不足，或者使用低疲劳极限的材料制造，可能会在一定数量的循环后发生失效，从而可能导致灾难性的后果。此外，cycles to failure的概念不仅与高风险行业（如航空航天）相关，还与日常产品有关。例如，笔记本电脑的铰链经历了无数次的开合循环。制造商必须考虑这些铰链的cycles to failure，以确保笔记本电脑在合理的时间内保持功能。如果铰链过早失效，可能会导致消费者的不满并损害品牌声誉。为了有效分析cycles to failure，工程师采用多种测试方法，包括疲劳测试，其中样品在控制的循环加载下直至失效。这些数据有助于确定材料的疲劳寿命，并为材料选择和设计修改提供依据。此外，技术的进步导致了新材料的开发，这些材料具有增强的疲劳抗力。例如，复合材料因其高强度与重量比和优越的疲劳性能而在航空航天应用中变得流行。通过利用这些材料，工程师可以提高组件的cycles to failure，从而改善整体性能和安全性。总之，理解cycles to failure的概念对于各个领域的工程师至关重要。它使他们能够通过预测材料在重复应力下的行为来设计更安全、更可靠的结构和产品。随着技术的不断发展，cycles to failure的研究将继续成为工程学的基本方面，确保材料能够承受其整个服务生命周期内施加的要求。