plastic yield point

简明释义

塑料的屈服点

英英释义

例句

1.The plastic yield point of this alloy is significantly higher than that of pure metal.

这种合金的塑性屈服点明显高于纯金属。

2.Understanding the plastic yield point is crucial for selecting the right materials in construction.

理解塑性屈服点对于选择建筑材料至关重要。

3.When testing metals, it is important to determine the plastic yield point to assess their strength.

在测试金属时，确定塑性屈服点以评估其强度是很重要的。

4.The engineer calculated the plastic yield point to ensure the material could withstand the load without permanent deformation.

工程师计算了塑性屈服点以确保材料能够承受负荷而不发生永久变形。

5.In manufacturing, knowing the plastic yield point helps prevent material failure during processing.

在制造过程中，了解塑性屈服点有助于防止材料在加工过程中失效。

作文

The concept of the plastic yield point is crucial in materials science and engineering. It refers to the stress level at which a material begins to deform plastically, meaning that it will not return to its original shape once the load is removed. Understanding this point is essential for engineers and designers as it helps them predict how materials will behave under various loads and conditions. When a material is subjected to stress, it initially behaves elastically, meaning it can return to its original form after the stress is removed. However, once the stress exceeds the plastic yield point, the material will undergo permanent deformation. This knowledge is vital in applications ranging from construction to manufacturing, where safety and reliability are paramount.For instance, consider the construction of a bridge. Engineers must select materials that can withstand significant loads without exceeding their plastic yield point. If the material used in the bridge were to exceed this point, it could lead to catastrophic failure, resulting in severe consequences. Therefore, understanding the plastic yield point allows engineers to choose appropriate materials and design structures that can safely support expected loads.In addition to construction, the plastic yield point plays a significant role in the manufacturing sector. When shaping metals or plastics, manufacturers must be aware of the plastic yield point to avoid damaging the material during processes such as welding, forging, or molding. For example, if a metal is heated and shaped beyond its plastic yield point, it may result in unwanted warping or cracking, leading to defective products. Thus, precise control over the temperature and pressure applied to materials is necessary to ensure they remain within safe limits.Another important aspect of the plastic yield point is its relationship with material properties such as ductility and toughness. Ductility refers to a material's ability to deform under tensile stress, while toughness indicates its ability to absorb energy before fracturing. Materials with high ductility often have a well-defined plastic yield point, allowing them to deform significantly before breaking. This property is particularly advantageous in applications where flexibility and resilience are desired.Moreover, the plastic yield point is not a fixed value; it can vary based on several factors, including temperature, strain rate, and material composition. For instance, increasing the temperature of a metal typically lowers its plastic yield point, making it easier to shape but also more prone to permanent deformation. Understanding these variations is critical for engineers who must account for different operating environments when designing components.In conclusion, the plastic yield point is a fundamental concept that impacts various fields, including construction, manufacturing, and materials science. By comprehensively understanding this point, engineers can make informed decisions about material selection and processing techniques, ensuring safety and reliability in their designs. As technology advances and new materials are developed, the importance of the plastic yield point will continue to grow, highlighting the need for ongoing research and education in this area.

“塑性屈服点”的概念在材料科学和工程中至关重要。它指的是材料开始发生塑性变形的应力水平，意味着一旦去除负载，材料将不会恢复到其原始形状。理解这一点对工程师和设计师至关重要，因为它帮助他们预测材料在各种负载和条件下的行为。当材料受到应力时，它最初表现为弹性，意味着它可以在去除应力后恢复到其原始形状。然而，一旦应力超过了塑性屈服点，材料将经历永久变形。这一知识在从建筑到制造的应用中至关重要，安全性和可靠性是重中之重。例如，考虑到桥梁的建造。工程师必须选择能够承受重大负荷而不超过其塑性屈服点的材料。如果用于桥梁的材料超过了这一点，可能会导致灾难性的故障，造成严重后果。因此，理解塑性屈服点使工程师能够选择合适的材料并设计能够安全支撑预期负荷的结构。除了建筑，塑性屈服点在制造业中也发挥着重要作用。在成型金属或塑料时，制造商必须注意塑性屈服点，以避免在焊接、锻造或模具过程中损坏材料。例如，如果金属被加热并在超过其塑性屈服点的情况下成型，可能会导致不必要的翘曲或开裂，从而导致缺陷产品。因此，对施加于材料的温度和压力进行精确控制是必要的，以确保它们保持在安全范围内。塑性屈服点的另一个重要方面是它与材料属性（如延展性和韧性）之间的关系。延展性指的是材料在拉伸应力下变形的能力，而韧性则表示其在断裂前吸收能量的能力。高延展性的材料通常具有明确的塑性屈服点，允许它们在断裂前显著变形。这一特性在需要灵活性和韧性的应用中尤其有利。此外，塑性屈服点并不是一个固定值；它可以根据多个因素变化，包括温度、应变速率和材料成分。例如，提高金属的温度通常会降低其塑性屈服点，使其更容易成型，但也更容易发生永久变形。理解这些变化对工程师至关重要，他们必须在设计组件时考虑不同的操作环境。总之，塑性屈服点是一个基本概念，影响着建筑、制造和材料科学等多个领域。通过全面理解这一点，工程师可以就材料选择和加工技术做出明智的决策，确保其设计的安全性和可靠性。随着技术的进步和新材料的发展，塑性屈服点的重要性将继续增长，突显出在这一领域进行持续研究和教育的必要性。