creep rate

简明释义

蠕变率

英英释义

例句

1.The engineer calculated the creep rate to determine how much the material would deform over time under constant stress.

工程师计算了蠕变速率以确定材料在恒定应力下随时间变形的程度。

2.During the testing phase, the creep rate of the polymer was measured to ensure it met industry standards.

在测试阶段，测量了聚合物的蠕变速率以确保其符合行业标准。

3.A high creep rate can lead to structural failure in buildings if not properly accounted for in the design.

如果在设计中没有正确考虑，高蠕变速率可能导致建筑物的结构失效。

4.The creep rate of metals increases at higher temperatures, which is crucial for applications in aerospace.

金属的蠕变速率在高温下增加，这对于航空航天应用至关重要。

5.Researchers are studying the creep rate of concrete under various environmental conditions.

研究人员正在研究混凝土在各种环境条件下的蠕变速率。

作文

In the field of engineering and material science, the term creep rate refers to the speed at which a material deforms under constant stress over time. This phenomenon is particularly significant when dealing with materials that are subjected to high temperatures and pressures, such as metals in aerospace applications or polymers in automotive parts. Understanding the creep rate of a material is crucial for predicting its long-term performance and durability, especially in critical applications where failure could lead to catastrophic results.Creep behavior can be divided into three stages: primary, secondary, and tertiary. During the primary stage, the creep rate decreases as the material undergoes work hardening. In the secondary stage, the creep rate becomes relatively constant, which is often referred to as steady-state creep. This is the most important phase for engineers as it provides a predictable rate of deformation. Finally, in the tertiary stage, the creep rate increases rapidly leading up to failure. Understanding these stages helps engineers design components that can withstand specific loads over an extended period without deforming excessively.To measure the creep rate, engineers typically conduct tests under controlled conditions, applying a constant load to a specimen and measuring its elongation over time. The results are often plotted on a graph, with time on the x-axis and strain on the y-axis. From this data, the creep rate can be determined by analyzing the slope of the curve during the steady-state portion of the test. This information is invaluable for selecting materials for various applications, ensuring that they will perform adequately under expected service conditions.In practical terms, the implications of creep rate are vast. For example, in the construction industry, understanding the creep rate of concrete is essential for ensuring that structures maintain their integrity over time. If the creep rate is too high, it can lead to excessive deflection in beams and slabs, compromising the safety and functionality of buildings. Similarly, in the manufacturing of turbine blades, engineers must account for the creep rate of the materials used, as these components operate in extreme environments where high temperatures can accelerate creep deformation.Moreover, the creep rate is not only limited to mechanical applications but also plays a role in biological systems. For instance, the human body experiences creep in soft tissues, which can affect joint health and mobility over time. Understanding the creep rate in biological tissues can aid in developing better treatments for injuries and degenerative diseases.In conclusion, the concept of creep rate is fundamental in both engineering and biology. It provides insights into how materials behave under stress over time, allowing for better design and material selection. As technology advances, the ability to accurately predict and measure creep rate will continue to improve, leading to safer and more efficient products across various industries. Engineers and scientists must remain vigilant about the creep rate to ensure the longevity and reliability of their designs, ultimately contributing to advancements in technology and quality of life.

在工程和材料科学领域，术语creep rate指的是材料在恒定应力下随着时间变形的速度。这种现象在高温和高压下受到影响的材料中尤为重要，例如航空航天应用中的金属或汽车部件中的聚合物。理解材料的creep rate对于预测其长期性能和耐用性至关重要，特别是在关键应用中，若发生故障可能导致灾难性后果。蠕变行为可以分为三个阶段：初级、次级和三级。在初级阶段，creep rate随着材料的工作硬化而减小。在次级阶段，creep rate相对恒定，这通常被称为稳态蠕变。这是工程师最重要的阶段，因为它提供了可预测的变形速率。最后，在三级阶段，creep rate迅速增加，直至发生故障。理解这些阶段有助于工程师设计能够承受特定负载的组件，使其在较长时间内不发生过度变形。为了测量creep rate，工程师通常在受控条件下进行测试，对样品施加恒定负载并测量其随时间的延伸。结果通常绘制在图表上，x轴为时间，y轴为应变。从这些数据中，可以通过分析测试稳态部分曲线的斜率来确定creep rate。这些信息对于选择各种应用的材料至关重要，以确保它们在预期服务条件下表现良好。在实际应用中，creep rate的影响是广泛的。例如，在建筑行业，理解混凝土的creep rate对于确保结构在时间上保持完整性至关重要。如果creep rate过高，可能会导致梁和板的过度挠曲，从而危及建筑的安全性和功能性。同样，在涡轮叶片的制造中，工程师必须考虑所用材料的creep rate，因为这些组件在极端环境中工作，高温会加速蠕变变形。此外，creep rate不仅限于机械应用，也在生物系统中发挥作用。例如，人体软组织经历蠕变，这可能会影响关节健康和活动能力。理解生物组织中的creep rate可以帮助开发更好的伤害和退行性疾病治疗方法。总之，creep rate的概念在工程和生物学中都是基础性的。它提供了材料在应力下随时间变化的洞察力，从而允许更好的设计和材料选择。随着技术的进步，准确预测和测量creep rate的能力将继续提高，从而在各个行业中带来更安全、更高效的产品。工程师和科学家必须时刻关注creep rate，以确保其设计的持久性和可靠性，最终促进技术进步和生活质量的提高。