fracture toughness

简明释义

断裂韧性

英英释义

例句

1.A higher fracture toughness value indicates a more durable material that can resist cracking.

更高的断裂韧性值表示材料更耐用，能够抵抗开裂。

2.In aerospace applications, fracture toughness is critical for ensuring the safety of aircraft components.

在航空航天应用中，断裂韧性对确保飞机部件的安全至关重要。

3.Concrete's fracture toughness plays a significant role in its performance under load.

混凝土的断裂韧性在其承载性能中起着重要作用。

4.The engineer tested the material's fracture toughness to ensure it can withstand high stress without breaking.

工程师测试了材料的断裂韧性，以确保它能承受高压力而不破裂。

5.The research focused on improving the fracture toughness of ceramics used in medical implants.

研究集中在提高用于医疗植入物的陶瓷的断裂韧性。

作文

Fracture toughness is a critical property of materials that indicates their ability to resist crack propagation when subjected to stress. In engineering and materials science, understanding the concept of fracture toughness (断裂韧性) is essential for ensuring the safety and reliability of structures and components. This property is particularly important in applications where materials are exposed to high levels of stress or harsh environmental conditions, such as in aerospace, automotive, and civil engineering industries.The measurement of fracture toughness (断裂韧性) is typically conducted through standardized tests that involve creating a pre-existing crack in a material sample and then applying a load until the crack propagates. The results are often expressed in terms of a critical stress intensity factor, which quantifies the stress required to propagate the crack. A higher fracture toughness (断裂韧性) value indicates that a material can withstand greater stress without failing, making it more suitable for demanding applications.Different materials exhibit varying levels of fracture toughness (断裂韧性). Metals, for instance, generally have higher fracture toughness (断裂韧性) compared to ceramics and some polymers. This variability arises from the intrinsic microstructural characteristics of the materials. For example, ductile metals can deform plastically before fracturing, allowing them to absorb energy and resist crack growth. In contrast, brittle materials tend to fracture suddenly without significant deformation, making them less desirable in applications where impact resistance is crucial.In recent years, advancements in material science have led to the development of new alloys and composite materials that exhibit improved fracture toughness (断裂韧性). These innovations allow engineers to design lighter and more efficient structures without compromising safety. For instance, the aerospace industry has benefited from the use of advanced composites that maintain high strength-to-weight ratios while providing excellent fracture toughness (断裂韧性). Moreover, the concept of fracture toughness (断裂韧性) extends beyond traditional materials. Researchers are exploring biomimetic materials that mimic the properties of natural substances, such as bone or shell, which demonstrate exceptional fracture toughness (断裂韧性) due to their unique hierarchical structures. By studying these natural materials, scientists aim to create synthetic alternatives that can outperform conventional materials in terms of strength and durability.Understanding fracture toughness (断裂韧性) is not only vital for material selection but also for predicting the lifespan and maintenance needs of structures. Engineers utilize this knowledge to perform risk assessments and develop strategies to mitigate potential failures. For example, in the construction of bridges or buildings, recognizing the fracture toughness (断裂韧性) of the materials used can help in designing reinforcements or choosing alternative materials that enhance overall safety.In conclusion, fracture toughness (断裂韧性) is an indispensable property in the field of materials science and engineering. Its significance cannot be overstated, as it directly impacts the performance and reliability of various applications. As technology advances, the continued study and improvement of fracture toughness (断裂韧性) will play a crucial role in developing safer and more efficient materials for future generations.