Geng Rongsheng
Beijing Aeronautical Technology Research Centre, P.O. Box 9203-16, Beijing 100076, China.
Ultrasonics. 2006 Dec 22;44 Suppl 1:e1025-9. doi: 10.1016/j.ultras.2006.05.092. Epub 2006 Jun 5.
This paper proposes the concept of modern acoustic emission (MAE) technique and describes its application in aviation industry. Modern AE is characterized by the combination of AE parameter and waveform analysis based on the understanding of AE source mechanism, the property of sound wave propagation and the interaction between sound wave and the medium in which the sound wave is propagating. Another feature of MAE is characterized by the application of so-called fully digital AE apparatus with low noise, high speed of data transmission and accurate AE source locating capability. MAE is merely an imagination without the realization of the advanced fully digital AE instrument. The application of MAE in monitoring the conditions of aircraft structures during a fatigue test was taken as an example for showing the important role played by AE. Roles of AE in the evaluation of (environment-related) corrosion damage of aircraft were also presented.
本文提出了现代声发射（MAE）技术的概念，并描述了其在航空工业中的应用。现代声发射的特点是基于对声发射源机制、声波传播特性以及声波与传播介质之间相互作用的理解，将声发射参数与波形分析相结合。现代声发射的另一个特点是应用了所谓的全数字声发射仪器，该仪器具有低噪声、高速数据传输和精确的声发射源定位能力。没有先进的全数字声发射仪器的实现，现代声发射仅仅是一种设想。以现代声发射在疲劳试验期间监测飞机结构状况的应用为例，展示了声发射所起的重要作用。还介绍了声发射在评估飞机（与环境相关的）腐蚀损伤方面的作用。
