creep rate

简明释义

蠕变速度

英英释义

例句

1.In high-temperature applications, the creep rate can significantly affect the lifespan of components.

在高温应用中，蠕变速率可以显著影响组件的寿命。

2.The engineer calculated the creep rate to determine how much deformation the material would undergo over time.

工程师计算了蠕变速率以确定材料在一段时间内会经历多少变形。

3.Monitoring the creep rate is crucial for ensuring the safety of structures under continuous load.

监测蠕变速率对于确保在持续负载下结构的安全至关重要。

4.A higher creep rate indicates that the material may not be suitable for long-term applications.

较高的蠕变速率表明该材料可能不适合长期应用。

5.The material's creep rate was tested at various temperatures to understand its performance.

该材料的蠕变速率在不同温度下进行了测试，以了解其性能。

作文

In the field of materials science and engineering, understanding the behavior of materials under stress is crucial. One important aspect of this behavior is the concept of creep rate, which refers to the rate at which a material deforms over time when subjected to a constant load or stress. This phenomenon is particularly significant in high-temperature applications, where materials can experience gradual deformation, leading to potential failure. The creep rate is influenced by various factors, including temperature, stress levels, and the material's microstructure.Creep is generally divided into three stages: primary, secondary, and tertiary. During the primary stage, the creep rate decreases as the material undergoes initial deformation. In the secondary stage, the creep rate reaches a steady state, which is often referred to as the minimum creep rate. This stage is crucial for engineers as it indicates the long-term behavior of the material under constant stress. Finally, in the tertiary stage, the creep rate increases rapidly, leading to eventual failure of the material.The significance of understanding creep rate cannot be overstated, especially in industries such as aerospace, automotive, and power generation. For instance, turbine blades in jet engines are exposed to extreme temperatures and stresses. Engineers must consider the creep rate of the materials used to ensure that they can withstand prolonged exposure without deforming excessively. Failure to account for creep rate can lead to catastrophic failures, resulting in costly repairs and potential loss of life.Moreover, different materials exhibit varying creep rates. Metals, polymers, and ceramics all respond differently to sustained loads. For example, metals typically have lower creep rates compared to polymers, making them more suitable for high-stress applications. However, certain alloys can be engineered to enhance their resistance to creep, thereby improving their performance in demanding environments.To measure the creep rate, engineers often conduct standardized tests, which involve applying a constant load to a specimen at elevated temperatures and monitoring its deformation over time. These tests provide valuable data that can be used to predict the lifespan of a material under specific conditions. Understanding the creep rate also aids in the development of new materials, as researchers can tailor properties to minimize creep deformation.In conclusion, the creep rate is a critical parameter in the study of material behavior under stress. It plays a vital role in ensuring the safety and reliability of structures and components in various industries. By comprehensively understanding the factors that influence creep rate, engineers and scientists can make informed decisions when selecting materials for specific applications, ultimately leading to safer and more efficient designs.

在材料科学和工程领域，理解材料在应力下的行为至关重要。这个行为的一个重要方面是“蠕变速率”的概念，它指的是材料在施加恒定负载或应力时随时间变形的速率。这种现象在高温应用中尤为重要，在这种情况下，材料可能会经历逐渐的变形，导致潜在的失效。“蠕变速率”受多种因素的影响，包括温度、应力水平和材料的微观结构。蠕变通常分为三个阶段：初级、次级和三级。在初级阶段，“蠕变速率”随着材料的初始变形而降低。在次级阶段，“蠕变速率”达到稳态，这通常被称为最小蠕变速率。这个阶段对工程师来说至关重要，因为它表明材料在恒定应力下的长期行为。最后，在三级阶段，“蠕变速率”迅速增加，最终导致材料的失效。理解“蠕变速率”的重要性不容小觑，尤其是在航空航天、汽车和发电等行业。例如，喷气发动机中的涡轮叶片暴露于极端温度和应力下。工程师必须考虑所用材料的“蠕变速率”，以确保它们能够在长时间暴露下不发生过度变形。如果不考虑“蠕变速率”，可能会导致灾难性的故障，造成昂贵的维修费用和潜在的生命损失。此外，不同材料表现出不同的“蠕变速率”。金属、聚合物和陶瓷在承受持续负载时的反应各不相同。例如，金属通常具有较低的“蠕变速率”，与聚合物相比，更适合高应力应用。然而，某些合金可以经过工程设计，以增强其抗蠕变能力，从而提高其在严苛环境中的性能。为了测量“蠕变速率”，工程师通常进行标准化测试，这涉及在升高的温度下对样品施加恒定负载，并监测其随时间的变形。这些测试提供了有价值的数据，可用于预测材料在特定条件下的使用寿命。理解“蠕变速率”也有助于新材料的开发，因为研究人员可以根据需要调整材料的属性，以最小化蠕变变形。总之，“蠕变速率”是研究材料在应力下行为的关键参数。它在确保各行业结构和组件的安全性和可靠性方面发挥着重要作用。通过全面理解影响“蠕变速率”的因素，工程师和科学家可以在选择特定应用的材料时做出明智的决策，最终导致更安全和更高效的设计。