fatigue strength

简明释义

疲劳限度

英英释义

例句

1.The engineer measured the fatigue strength of the material to ensure it could withstand repeated loading.

工程师测量了材料的疲劳强度，以确保其能够承受反复加载。

2.A higher fatigue strength can lead to longer service life for mechanical parts.

更高的疲劳强度可以使机械部件的使用寿命更长。

3.Designers must consider the fatigue strength of materials when creating structures that experience cyclic loads.

设计师在创建经历循环载荷的结构时，必须考虑材料的疲劳强度。

4.The testing results showed that the alloy had a high fatigue strength, making it suitable for heavy machinery.

测试结果显示该合金具有高疲劳强度，适合重型机械使用。

5.In aerospace applications, the fatigue strength of components is critical for safety.

在航空航天应用中，零件的疲劳强度对安全至关重要。

作文

Fatigue strength is a crucial concept in the field of materials science and engineering. It refers to the ability of a material to withstand repeated loading and unloading cycles without failing. This property is particularly important for components that are subjected to fluctuating stresses over time, such as in machinery, vehicles, and structural applications. Understanding fatigue strength (疲劳强度) allows engineers to design safer and more reliable products. In many engineering applications, materials experience cyclic loads that can lead to fatigue failure. This type of failure occurs when a material is subjected to stress levels below its ultimate tensile strength but is still subjected to these stresses repeatedly over time. The result is the formation of microscopic cracks that can grow with each cycle until the material ultimately fails. Therefore, evaluating the fatigue strength (疲劳强度) of materials is essential in predicting their lifespan and performance under real-world conditions. To assess the fatigue strength (疲劳强度) of a material, engineers often conduct fatigue tests, which involve subjecting specimens to controlled cyclic loading. These tests help determine the number of cycles a material can endure before failure occurs. The results are typically plotted on a S-N curve, which shows the relationship between stress amplitude and the number of cycles to failure. By analyzing this data, engineers can identify materials that possess high fatigue strength (疲劳强度) and select the most appropriate one for their specific application. Materials with high fatigue strength (疲劳强度) are essential in industries where safety and reliability are paramount. For example, in the aerospace industry, components like aircraft wings and fuselage structures must withstand significant cyclic loads during flight. Similarly, in the automotive industry, parts such as crankshafts and suspension systems are constantly exposed to varying stress levels while in operation. Engineers must ensure that these components have sufficient fatigue strength (疲劳强度) to prevent catastrophic failures that could endanger lives. Moreover, advancements in material science have led to the development of new alloys and composites that exhibit improved fatigue strength (疲劳强度). Researchers are continually exploring ways to enhance the fatigue resistance of materials through processes such as heat treatment, surface hardening, and alloying. These innovations not only improve the performance of existing materials but also pave the way for new applications in various fields. In conclusion, fatigue strength (疲劳强度) is a vital property that influences the design and selection of materials in engineering. By understanding and measuring this characteristic, engineers can create safer, more durable products that meet the demands of modern technology. As we continue to push the boundaries of engineering and materials science, the importance of fatigue strength (疲劳强度) will only grow, highlighting the need for ongoing research and development in this area.

疲劳强度是材料科学和工程领域的一个关键概念。它指的是材料在重复加载和卸载循环中不发生失效的能力。这一特性对于那些随着时间受到波动应力的部件尤为重要，比如机械、车辆和结构应用。理解疲劳强度（fatigue strength）使工程师能够设计出更安全、更可靠的产品。在许多工程应用中，材料会经历循环负荷，这可能导致疲劳失效。这种类型的失效发生在材料承受的应力水平低于其极限抗拉强度，但仍然在长时间内反复承受这些应力。结果是形成微观裂纹，这些裂纹可能随着每个循环而增长，直到材料最终失效。因此，评估材料的疲劳强度（fatigue strength）对于预测其在现实条件下的使用寿命和性能至关重要。为了评估材料的疲劳强度（fatigue strength），工程师通常会进行疲劳测试，这涉及将试样置于受控的循环加载下。这些测试有助于确定材料在失效发生之前可以承受的循环次数。结果通常绘制在S-N曲线上，显示应力幅值与失效循环次数之间的关系。通过分析这些数据，工程师可以识别具有高疲劳强度（fatigue strength）的材料，并选择最适合其特定应用的材料。具有高疲劳强度（fatigue strength）的材料在安全和可靠性至关重要的行业中是必不可少的。例如，在航空航天工业中，飞机机翼和机身结构等部件必须承受飞行中的显著循环负荷。同样，在汽车工业中，曲轴和悬挂系统等部件在运行时会不断暴露于不同的应力水平。工程师必须确保这些部件具有足够的疲劳强度（fatigue strength），以防止可能危及生命的灾难性失效。此外，材料科学的进步导致了新合金和复合材料的开发，这些材料表现出改善的疲劳强度（fatigue strength）。研究人员不断探索通过热处理、表面硬化和合金化等过程提高材料的疲劳抗力的方法。这些创新不仅改善了现有材料的性能，还为各个领域的新应用铺平了道路。总之，疲劳强度（fatigue strength）是影响工程材料设计和选择的重要属性。通过理解和测量这一特性，工程师可以创造出更安全、更耐用的产品，以满足现代技术的需求。随着我们不断推动工程和材料科学的边界，疲劳强度（fatigue strength）的重要性只会增加，强调了在这一领域持续研究和发展的必要性。