endurance limit

简明释义

持久极限

英英释义

例句

1.Research shows that the endurance limit can be affected by temperature and environmental conditions.

研究表明，耐久极限可能受到温度和环境条件的影响。

2.The engineer calculated the endurance limit to ensure the bridge could withstand repeated loads without failing.

工程师计算了耐久极限以确保桥梁能够承受反复的载荷而不发生故障。

3.The endurance limit of this alloy is significantly higher than that of its competitors.

这种合金的耐久极限明显高于其竞争对手。

4.To avoid structural failure, we must stay below the endurance limit in our design.

为了避免结构故障，我们的设计必须低于耐久极限。

5.In fatigue testing, determining the endurance limit is crucial for predicting the lifespan of materials.

在疲劳测试中，确定耐久极限对于预测材料的使用寿命至关重要。

作文

The concept of the endurance limit is crucial in the field of materials science and engineering. It refers to the maximum stress level that a material can withstand for an infinite number of loading cycles without experiencing fatigue failure. Understanding the endurance limit is essential for engineers when designing components that will be subjected to repeated loading, such as in automotive or aerospace applications. When a material is exposed to cyclic loading, it may develop microscopic cracks over time, leading to catastrophic failure if the stress exceeds the endurance limit. In practical terms, the endurance limit can be determined through various testing methods, such as rotating bending tests or axial loading tests. During these tests, a sample material is subjected to varying levels of stress until it ultimately fails. By plotting the results, engineers can identify the endurance limit and use this information to ensure that components are designed to operate safely within these limits.The importance of the endurance limit cannot be overstated. For instance, in the automotive industry, components such as axles, crankshafts, and gears must be able to endure countless cycles of stress during their operational life. If these components exceed their endurance limit, they are at risk of failure, which could lead to severe accidents and costly repairs. Therefore, engineers must carefully consider the endurance limit of materials when selecting them for specific applications.Moreover, the endurance limit can vary significantly between different materials. For example, steel typically has a well-defined endurance limit, while materials such as aluminum may not exhibit a clear endurance limit at all. This variability emphasizes the need for thorough material testing and analysis in the design process.In addition to traditional materials, the endurance limit also plays a role in the development of advanced materials such as composites and polymers. As technology evolves, engineers must adapt their understanding of the endurance limit to accommodate new materials and their unique properties. This adaptability is vital for ensuring the safety and reliability of modern engineering solutions.In conclusion, the endurance limit is a fundamental concept that engineers must understand to design safe and effective components. By recognizing the maximum stress levels that materials can endure over time, engineers can prevent failures and ensure the longevity of their designs. As we continue to innovate and develop new materials, a comprehensive understanding of the endurance limit will remain essential in the pursuit of engineering excellence and safety.

“疲劳极限”这一概念在材料科学和工程领域至关重要。它指的是材料在经历无限次加载循环而不发生疲劳失效的最大应力水平。理解“疲劳极限”对于工程师设计将承受重复载荷的组件（例如汽车或航空航天应用）是必不可少的。当材料暴露于循环加载时，随着时间的推移，它可能会发展出微观裂纹，如果应力超过“疲劳极限”，则会导致灾难性失效。在实际操作中，可以通过多种测试方法确定“疲劳极限”，例如旋转弯曲测试或轴向加载测试。在这些测试中，样品材料会受到不同应力水平的作用，直到最终失效。通过绘制结果，工程师可以识别“疲劳极限”，并利用这些信息确保组件的设计在这些限制内安全运行。“疲劳极限”的重要性不容小觑。例如，在汽车行业，车轴、曲轴和齿轮等组件必须能够在其操作生命周期中承受无数次应力循环。如果这些组件超过了它们的“疲劳极限”，它们就有失效的风险，这可能导致严重的事故和昂贵的维修。因此，工程师在选择特定应用的材料时，必须仔细考虑材料的“疲劳极限”。此外，“疲劳极限”在不同材料之间可能会有显著差异。例如，钢材通常具有明确的“疲劳极限”，而铝等材料可能根本没有明显的疲劳极限。这种变化强调了在设计过程中进行全面材料测试和分析的必要性。除了传统材料外，“疲劳极限”在复合材料和聚合物等先进材料的发展中也发挥着作用。随着技术的进步，工程师必须调整他们对“疲劳极限”的理解，以适应新材料及其独特性质。这种适应能力对于确保现代工程解决方案的安全性和可靠性至关重要。总之，“疲劳极限”是工程师必须理解的基本概念，以设计安全有效的组件。通过认识到材料可以承受的最大应力水平，工程师可以防止失效，确保设计的持久性。随着我们继续创新和开发新材料，对“疲劳极限”的全面理解将在追求工程卓越和安全的过程中保持重要性。