notched specimen

简明释义

切口试样

英英释义

例句

1.The museum displayed a notched specimen from the Stone Age as part of the exhibit.

博物馆展示了一件来自石器时代的刻痕标本，作为展览的一部分。

2.In the lab, we created a notched specimen to test the durability of new materials.

在实验室，我们制作了一个刻痕标本来测试新材料的耐用性。

3.The notched specimen was crucial in understanding the evolution of early human tools.

这个刻痕标本对于理解早期人类工具的演变至关重要。

4.Researchers used a notched specimen to simulate stress tests on the material.

研究人员使用一个刻痕标本来模拟材料的压力测试。

5.The archaeologist carefully examined the notched specimen for signs of ancient tool use.

考古学家仔细检查了这个刻痕标本，以寻找古代工具使用的迹象。

作文

In the field of materials science, the term notched specimen refers to a sample that has been intentionally modified to include a notch or groove. This modification is critical for testing the material's mechanical properties, particularly its toughness and resistance to crack propagation. When engineers and scientists conduct experiments on notched specimens, they aim to understand how materials behave under stress and to identify their failure points. The presence of a notch creates a stress concentration, which is essential for simulating real-world conditions where materials may have flaws or imperfections.The process of creating a notched specimen involves precise machining or cutting techniques to ensure that the notch is uniform and accurately placed. This precision is vital because the size and shape of the notch can significantly influence the test results. For instance, a deeper or wider notch may lead to earlier failure of the material, while a shallower notch may not adequately simulate the stress conditions that occur in practical applications.Testing notched specimens is an integral part of the development of new materials. Whether it is for construction, automotive, or aerospace industries, understanding how materials respond to stress is crucial for safety and reliability. Engineers often use standardized tests, such as the Charpy impact test or the tensile test, to evaluate the performance of notched specimens. These tests provide valuable data that can be used to improve material formulations and processing techniques.Moreover, the analysis of notched specimens contributes to the field of fracture mechanics, which studies how and why materials fail. By examining the fracture surfaces of tested specimens, researchers can gain insights into the mechanisms of crack initiation and propagation. This knowledge is essential for predicting the lifespan of materials and ensuring that they meet safety standards in various applications.In addition to their importance in laboratory settings, notched specimens have practical implications in everyday life. For example, the design of safety features in vehicles often relies on the understanding of how materials behave under stress. By conducting tests on notched specimens, engineers can design components that are less likely to fail in the event of a collision, thereby enhancing passenger safety.Furthermore, the concept of the notched specimen can be extended beyond materials science into other fields, such as biology and medicine. In biological research, scientists may create notched specimens of tissues or cells to study their responses to various stimuli or treatments. This approach allows for a better understanding of cellular behavior and can lead to advancements in medical therapies and interventions.In conclusion, the term notched specimen plays a significant role in both theoretical and practical aspects of engineering and science. By providing a means to evaluate the mechanical properties of materials under controlled conditions, notched specimens help ensure that the materials we rely on are safe, durable, and effective. As technology advances, the methods of creating and testing notched specimens will continue to evolve, leading to even greater innovations in material science and engineering practices.

在材料科学领域，术语缺口试样指的是经过故意修改以包含缺口或凹槽的样品。这种修改对于测试材料的机械性能，尤其是其韧性和抗裂纹扩展能力至关重要。当工程师和科学家对缺口试样进行实验时，他们旨在了解材料在应力下的行为，并识别其失效点。缺口的存在会产生应力集中，这对于模拟材料可能存在缺陷或不完美的现实条件至关重要。创建缺口试样的过程涉及精确的机械加工或切割技术，以确保缺口均匀且准确地放置。这种精度至关重要，因为缺口的大小和形状会显著影响测试结果。例如，较深或较宽的缺口可能导致材料更早失效，而较浅的缺口可能无法充分模拟实际应用中发生的应力条件。对缺口试样的测试是新材料开发的重要组成部分。无论是在建筑、汽车还是航空航天工业中，了解材料在应力下的响应对于安全性和可靠性至关重要。工程师通常使用标准化测试，如夏比冲击试验或拉伸试验，来评估缺口试样的性能。这些测试提供了宝贵的数据，可用于改进材料配方和加工技术。此外，缺口试样的分析有助于断裂力学领域的研究，该领域研究材料如何以及为何失效。通过检查测试样品的断裂表面，研究人员可以深入了解裂纹起始和扩展的机制。这些知识对于预测材料的使用寿命并确保它们在各种应用中符合安全标准至关重要。除了在实验室环境中的重要性，缺口试样在日常生活中也具有实际意义。例如，车辆安全功能的设计通常依赖于对材料在应力下行为的理解。通过对缺口试样进行测试，工程师可以设计出在碰撞事件中不易失效的部件，从而增强乘客的安全性。此外，缺口试样的概念不仅限于材料科学，还可以扩展到生物学和医学等其他领域。在生物研究中，科学家可能会创建缺口试样的组织或细胞，以研究其对各种刺激或治疗的反应。这种方法可以更好地理解细胞行为，并可能导致医疗疗法和干预措施的进步。总之，术语缺口试样在工程和科学的理论和实践方面都发挥着重要作用。通过提供一种在受控条件下评估材料机械性能的方法，缺口试样帮助确保我们依赖的材料是安全、耐用和有效的。随着技术的进步，创建和测试缺口试样的方法将继续发展，从而在材料科学和工程实践中带来更大的创新。