granular fracture

简明释义

1. 颗状断口; 2. 粒状断口;

英英释义

例句

1.The presence of a granular fracture can significantly affect the strength of the material.

存在颗粒状断裂会显著影响材料的强度。

2.The geologist noted a granular fracture in the rock formation, indicating past tectonic activity.

地质学家注意到岩层中的颗粒状断裂，这表明过去的构造活动。

3.The granular fracture observed in the sample suggests it has undergone significant stress.

样本中观察到的颗粒状断裂表明它经历了显著的应力。

4.Researchers are studying how granular fractures form under high pressure conditions.

研究人员正在研究在高压条件下如何形成颗粒状断裂。

5.During the inspection, the engineer found a granular fracture in the concrete structure that needed immediate repair.

在检查过程中，工程师发现混凝土结构中有一处颗粒状断裂，需要立即修复。

作文

In the field of material science and engineering, understanding the various types of fractures that materials can experience is crucial for predicting their performance and durability. One such type of fracture is known as granular fracture, which refers to a specific mode of failure characterized by the formation of small, granular-like fragments within the material. This phenomenon often occurs in brittle materials, where stress concentrations lead to the propagation of cracks. The study of granular fracture is essential for engineers and scientists alike, as it can significantly impact the integrity of structures and components.To better understand granular fracture, it is important to first grasp the basic principles of how materials fail. When a material is subjected to external forces, it may deform elastically up to a certain limit. Beyond this limit, the material can undergo plastic deformation or fracture. In the case of brittle materials, such as ceramics and some types of metals, the failure typically occurs suddenly and without significant prior deformation. This leads to a variety of fracture patterns, one of which is granular fracture.The mechanism behind granular fracture involves the initiation and growth of micro-cracks within the material. As these micro-cracks coalesce, they form larger cracks that ultimately lead to the separation of the material into smaller pieces. The resulting fragments are often irregular in shape and can resemble grains of sand, hence the term 'granular.' This type of fracture is particularly concerning in applications where material integrity is critical, such as in aerospace, automotive, and civil engineering.One of the key factors influencing the occurrence of granular fracture is the material's microstructure. For instance, materials with a fine-grained microstructure tend to exhibit different fracture behavior compared to those with a coarse-grained structure. Fine-grained materials may be more prone to granular fracture due to the presence of numerous grain boundaries, which can act as sites for crack initiation. Conversely, coarse-grained materials might show more ductility and resistance to such fracture modes.Additionally, environmental factors such as temperature and humidity can also play a significant role in the development of granular fracture. For example, exposure to extreme temperatures can alter the mechanical properties of a material, making it more susceptible to brittle failure. Understanding these factors allows engineers to design more resilient materials and structures that can withstand various loading conditions.In conclusion, the concept of granular fracture is a vital aspect of material science that requires careful consideration during the design and analysis of materials and structures. By studying the mechanisms and influences behind this type of fracture, researchers and engineers can improve the reliability and safety of their products. As technology continues to advance, the knowledge gained from understanding granular fracture will undoubtedly contribute to the development of stronger and more durable materials, ultimately benefiting various industries and society as a whole.

在材料科学和工程领域，理解材料可能经历的各种断裂类型对于预测其性能和耐用性至关重要。其中一种断裂类型被称为颗粒状断裂，指的是一种特定的失效模式，其特征是材料内部形成小的、类似颗粒的碎片。这种现象通常发生在脆性材料中，当应力集中导致裂纹扩展时。对颗粒状断裂的研究对工程师和科学家而言都是必不可少的，因为它可以显著影响结构和组件的完整性。要更好地理解颗粒状断裂，首先需要掌握材料失效的基本原理。当材料受到外部力的作用时，它可能在一定范围内发生弹性变形。超过这个极限，材料可能会发生塑性变形或断裂。在脆性材料的情况下，例如陶瓷和某些类型的金属，失效通常是突然发生的，并且没有显著的先前变形。这导致了多种断裂模式，其中之一就是颗粒状断裂。颗粒状断裂背后的机制涉及材料内部微裂纹的产生和扩展。当这些微裂纹合并时，它们形成更大的裂纹，最终导致材料分离成更小的碎片。所产生的碎片通常形状不规则，可能类似于沙粒，因此得名“颗粒状”。这种类型的断裂在材料完整性至关重要的应用中尤为令人担忧，例如航空航天、汽车和土木工程。影响颗粒状断裂发生的关键因素之一是材料的微观结构。例如，具有细晶微观结构的材料与具有粗晶结构的材料相比，断裂行为可能不同。细晶材料由于存在众多晶界，可能更容易发生颗粒状断裂，因为这些晶界可以作为裂纹产生的位点。相反，粗晶材料可能表现出更高的延展性和对这种断裂模式的抵抗力。此外，温度和湿度等环境因素也会在颗粒状断裂的发展中发挥重要作用。例如，暴露于极端温度可能会改变材料的机械性能，使其更容易发生脆性失效。理解这些因素使工程师能够设计出更具韧性的材料和结构，以承受各种载荷条件。总之，颗粒状断裂的概念是材料科学中的一个重要方面，在材料和结构的设计与分析过程中需要仔细考虑。通过研究这种断裂类型的机制和影响，研究人员和工程师可以提高其产品的可靠性和安全性。随着技术的不断进步，从理解颗粒状断裂中获得的知识无疑将有助于开发出更强大和更耐用的材料，最终使各个行业和整个社会受益。