fatigue ratio

简明释义

疲劳系数

英英释义

例句

1.Monitoring the fatigue ratio helps in predicting maintenance schedules for machinery.

监测疲劳比率有助于预测机械的维护计划。

2.The engineer calculated the fatigue ratio to determine the lifespan of the material under repeated stress.

工程师计算了疲劳比率以确定材料在重复应力下的使用寿命。

3.A low fatigue ratio indicates that the material can withstand more cycles before failure.

低疲劳比率表明材料在失效之前可以承受更多的循环。

4.In our study, we found that the fatigue ratio significantly affects the performance of structural components.

在我们的研究中，我们发现疲劳比率显著影响结构组件的性能。

5.The fatigue ratio is a critical factor in aerospace engineering to ensure safety and reliability.

疲劳比率是航空航天工程中的一个关键因素，以确保安全性和可靠性。

作文

Understanding the concept of fatigue ratio is crucial in various fields, particularly in engineering and materials science. The term refers to the measure of a material's resistance to fatigue failure under cyclic loading conditions. Fatigue failure occurs when a material is subjected to repeated stress or strain, leading to the gradual formation of cracks and eventual fracture. The fatigue ratio helps engineers and designers assess how long a material can withstand such conditions before failing. This understanding is essential for ensuring safety and reliability in structures and components that experience fluctuating loads.In practical terms, the fatigue ratio is calculated by comparing the endurance limit of a material to its yield strength. The endurance limit is the maximum stress level a material can endure for an infinite number of cycles without failing, while the yield strength is the stress at which a material begins to deform plastically. A higher fatigue ratio indicates better performance under cyclic loading, making it a critical parameter in material selection for applications like aerospace, automotive, and civil engineering.For instance, consider the design of an aircraft wing. Wings are subjected to various forces during flight, including lift, drag, and turbulence. Engineers must ensure that the materials used can handle these stresses over time without succumbing to fatigue. By analyzing the fatigue ratio of different materials, they can select those that will provide the necessary strength and longevity. This not only enhances the safety of the aircraft but also reduces maintenance costs and increases the lifespan of the components.Moreover, the fatigue ratio is not static; it can be influenced by several factors, including temperature, environment, and surface finish. For example, materials exposed to corrosive environments may have a lower fatigue ratio due to the accelerated degradation of their properties. Similarly, a rough surface finish can act as a stress concentrator, leading to premature fatigue failure. Therefore, understanding how these factors affect the fatigue ratio is vital for engineers when designing components that will operate under cyclic loads.In conclusion, the fatigue ratio is a key concept in evaluating material performance under cyclic loading. It provides valuable insights into how materials behave over time, allowing engineers to make informed decisions about material selection and design. By considering the fatigue ratio, we can enhance the safety and durability of structures and components, ultimately leading to more reliable and efficient engineering solutions.

理解疲劳比率的概念在多个领域中至关重要，特别是在工程和材料科学中。该术语指的是材料在循环载荷条件下抵抗疲劳失效的能力的量度。疲劳失效发生在材料受到重复的应力或应变时，导致裂纹逐渐形成并最终断裂。疲劳比率帮助工程师和设计师评估材料在失效之前可以承受这种条件的时间。这种理解对于确保在经历波动载荷的结构和组件中的安全性和可靠性至关重要。在实际应用中，疲劳比率是通过将材料的耐久极限与其屈服强度进行比较来计算的。耐久极限是材料在无限循环次数下可以承受的最大应力水平，而屈服强度是材料开始发生塑性变形的应力。较高的疲劳比率表示在循环载荷下的表现更好，使其成为航空航天、汽车和土木工程等应用中材料选择的关键参数。例如，考虑飞机机翼的设计。机翼在飞行过程中会受到各种力量的影响，包括升力、阻力和湍流。工程师必须确保所使用的材料能够承受这些应力而不会因疲劳而失效。通过分析不同材料的疲劳比率，他们可以选择那些能提供必要强度和耐久性的材料。这不仅增强了飞机的安全性，还减少了维护成本并延长了组件的使用寿命。此外，疲劳比率不是静态的；它可能受到多种因素的影响，包括温度、环境和表面处理。例如，暴露于腐蚀性环境中的材料可能由于其性能的加速降解而具有较低的疲劳比率。同样，粗糙的表面处理可能作为应力集中器，导致疲劳失效的提前发生。因此，了解这些因素如何影响疲劳比率对于工程师在设计将在循环载荷下运行的组件时至关重要。总之，疲劳比率是评估材料在循环载荷下性能的关键概念。它提供了关于材料随时间变化的行为的宝贵见解，使工程师能够做出有关材料选择和设计的明智决策。通过考虑疲劳比率，我们可以增强结构和组件的安全性和耐用性，从而最终导致更可靠和高效的工程解决方案。