acoustic emission

简明释义

声发射

英英释义

例句

1.The engineer used acoustic emission to monitor the integrity of the bridge during the inspection.

工程师在检查期间使用声发射来监测桥梁的完整性。

2.The use of acoustic emission in monitoring pipelines has increased due to its effectiveness.

由于其有效性，声发射在管道监测中的使用增加了。

3.By analyzing acoustic emission, we can detect early signs of fatigue in machinery.

通过分析声发射，我们可以检测到机械疲劳的早期迹象。

4.The research team focused on acoustic emission as a non-destructive testing method for materials.

研究小组将注意力集中在声发射作为材料的无损检测方法上。

5.During the fracture test, acoustic emission was recorded to understand the failure mechanisms.

在断裂测试中，记录了声发射以了解失效机制。

作文

The study of materials and their properties is a fundamental aspect of engineering and physics. One of the fascinating phenomena observed in this field is acoustic emission, which refers to the generation of stress waves in a material when it undergoes deformation. This phenomenon can occur in various materials, including metals, polymers, and ceramics, and it provides valuable insights into the integrity and performance of these materials under different conditions. Understanding acoustic emission is crucial for improving safety and reliability in numerous applications, from construction to aerospace engineering.When a material is subjected to external forces, it can deform elastically or plastically. During this process, especially when the material is nearing its failure point, microcracks may initiate and propagate within the material. These microcracks generate stress waves that travel through the material and can be detected as acoustic emission. By monitoring these emissions, engineers can gain real-time information about the structural health of the material, allowing them to identify potential failures before they occur.In practice, the detection of acoustic emission involves specialized sensors that are capable of picking up the high-frequency sound waves produced during the deformation process. These sensors are often placed on the surface of the material being tested. When a microcrack forms, the sensor detects the resulting stress wave and converts it into an electrical signal, which can then be analyzed to determine the location, size, and rate of crack propagation. This technique is particularly useful in non-destructive testing (NDT), where preserving the integrity of the material is paramount.One of the significant advantages of using acoustic emission technology is its ability to provide continuous monitoring. Unlike traditional methods that may involve periodic inspections, acoustic emission can offer ongoing assessments of a structure’s condition. This capability is especially important in critical applications such as bridges, dams, and aircraft, where unexpected failures can have catastrophic consequences.Moreover, the data obtained from acoustic emission monitoring can be used to create predictive maintenance schedules. By analyzing the frequency and intensity of the emissions, engineers can estimate the remaining life of a material or structure. This information allows for timely repairs and replacements, ultimately saving costs and enhancing safety.In conclusion, acoustic emission is a powerful tool in the field of materials science and engineering. Its ability to provide real-time insights into the health of materials makes it invaluable for ensuring the safety and longevity of structures. As technology advances, the applications of acoustic emission are likely to expand, leading to even more innovative solutions for monitoring and maintaining our built environment. Understanding this phenomenon not only enhances our knowledge of material behavior but also plays a critical role in safeguarding lives and resources in various industries.

材料及其性能的研究是工程和物理学的基本方面之一。在该领域观察到的一种迷人现象是声发射，它指的是当材料发生变形时在材料中产生的应力波。这种现象可以发生在各种材料中，包括金属、聚合物和陶瓷，它为我们提供了有关这些材料在不同条件下的完整性和性能的宝贵见解。理解声发射对于提高许多应用中的安全性和可靠性至关重要，从建筑到航空航天工程。当材料受到外力作用时，它可能会发生弹性或塑性变形。在此过程中，尤其是在材料接近其失效点时，微裂纹可能会在材料内部形成并扩展。这些微裂纹会产生应力波，这些波在材料中传播，并可以被检测为声发射。通过监测这些发射，工程师可以获得关于材料结构健康的实时信息，使他们能够在潜在故障发生之前识别出问题。在实践中，声发射的检测涉及专门的传感器，这些传感器能够捕捉到在变形过程中产生的高频声波。这些传感器通常放置在被测试材料的表面。当微裂纹形成时，传感器检测到随之而来的应力波，并将其转换为电信号，然后可以分析这些信号以确定裂纹的位置信息、大小和扩展速度。这项技术在无损检测（NDT）中尤为有用，在这种情况下，保持材料的完整性至关重要。使用声发射技术的一个显著优势是其提供连续监测的能力。与传统方法可能涉及定期检查不同，声发射可以提供对结构状态的持续评估。这种能力在桥梁、大坝和飞机等关键应用中尤其重要，因为意外故障可能会导致灾难性后果。此外，从声发射监测中获得的数据可以用于创建预测性维护计划。通过分析发射的频率和强度，工程师可以估算材料或结构的剩余使用寿命。这些信息允许及时进行维修和更换，最终节省成本并增强安全性。总之，声发射是材料科学和工程领域的一项强大工具。它提供实时的材料健康洞察，使其在确保结构安全和持久性方面不可或缺。随着技术的进步，声发射的应用可能会扩展，导致对监测和维护我们建成环境的更具创新性的解决方案。理解这一现象不仅增强了我们对材料行为的认识，而且在各个行业中发挥着保护生命和资源的关键作用。