fatigue strength

简明释义

疲劳强度

英英释义

例句

1.The fatigue strength of the alloy was significantly improved by heat treatment.

通过热处理，该合金的疲劳强度显著提高。

2.In structural engineering, components must have adequate fatigue strength to withstand repeated loads.

在结构工程中，组件必须具有足够的疲劳强度以承受重复负载。

3.The manufacturer provided specifications on the fatigue strength of the plastic used in their products.

制造商提供了其产品中使用的塑料的疲劳强度规格。

4.Understanding the fatigue strength of metals is crucial for aerospace applications.

理解金属的疲劳强度对航空航天应用至关重要。

5.The engineer conducted tests to determine the fatigue strength of the material used in the bridge design.

工程师进行了测试，以确定用于桥梁设计的材料的疲劳强度。

作文

Fatigue strength is a critical concept in materials science and engineering that refers to the ability of a material to withstand repeated loading and unloading cycles without failing. It is particularly important in applications where materials are subjected to fluctuating stresses, such as in bridges, aircraft, and machinery. Understanding fatigue strength (疲劳强度) allows engineers to design components that can endure the rigors of operational conditions over an extended period.The phenomenon of fatigue failure occurs when a material experiences stress levels that are lower than its ultimate tensile strength but are applied repetitively. This can lead to the initiation of cracks, which may grow over time and ultimately result in catastrophic failure. For instance, consider the case of an aircraft wing, which is subject to constant flexing during flight. The materials used in its construction must possess high fatigue strength (疲劳强度) to ensure safety and reliability.To evaluate the fatigue strength (疲劳强度) of a material, engineers conduct fatigue tests that involve subjecting samples to cyclic loading. The results of these tests help determine the number of cycles a material can endure before failure occurs. This information is crucial for predicting the lifespan of components and ensuring they meet safety standards.Different materials exhibit varying levels of fatigue strength (疲劳强度). For example, metals generally have higher fatigue strength compared to polymers. However, within the category of metals, factors such as alloy composition, heat treatment, and surface finish can significantly influence fatigue performance. Engineers often select specific materials based on their fatigue strength (疲劳强度) characteristics to optimize performance and cost-effectiveness.In addition to material selection, the design of components also plays a vital role in enhancing fatigue strength (疲劳强度). Techniques such as introducing fillets, avoiding sharp corners, and using peening processes can reduce stress concentrations that contribute to fatigue failure. By carefully considering both material properties and design features, engineers can create more durable and reliable structures.Furthermore, the understanding of fatigue strength (疲劳强度) has evolved with advancements in technology. Computational methods, such as finite element analysis, allow for more accurate predictions of fatigue life by simulating real-world conditions. These tools enable engineers to optimize designs before physical prototypes are created, saving time and resources.In conclusion, fatigue strength (疲劳强度) is an essential parameter in the field of engineering that influences the design and selection of materials for various applications. Its significance cannot be overstated, as it directly impacts the safety, reliability, and longevity of structures and components. As technology continues to advance, our understanding and ability to enhance fatigue strength (疲劳强度) will undoubtedly improve, leading to safer and more efficient engineering solutions.