A New Family of Acoustic Emission Sensors for Damage Source Identification

Steven D. Glaser，加州大学伯克利分校)本项目将使用声发射方法开发检测和监测工具，从而可以在结构失效之前直接检测到结构的恶化。将开发新的解释算法和传感器设计，以解决当前的困难，例如在异质介质中工作，使用少量传感器，以及将传感器放置在远离损伤源的地方。该项目主要关注三个目前还没有传感器的问题。它们是：1 -开发一种微小但硬化的可嵌入的高保真的对粒子位移敏感的声发射传感器；微型三分量高保真声发射传感器的研制；专为低声阻抗材料研制的高保真声发射传感器。该项目将利用私家侦探与德国斯图加特大学的克里斯蒂安·格罗斯教授之间的密切联系。我们将使用为他的欧盟项目制作的大型测试平台和实际现场监测，并获得一个带有机载处理能力的无线平台，专门为AE构建。

AbstractCMS- 0624985 Steven D. Glaser, University of CaliforniaBrekeley)This project will use acoustic emission methods to develop tools for inspection and monitoring, which allows direct detection of structural deterioration prior to failure. New interpretation algorithms and transducer designs will be developed to account for current difficulties, such as working in a heterogeneous media, using few sensors, and placing the sensors far from the damage source.The project focuses on three problems for which no sensor currently exists. They are:i - development of a micro but hardened embeddible high-fidelity AE sensor sensitive to particle displacements;ii - development of a micro three-component high-fidelity AE sensor;iii - development of a high fidelity AE sensor specially for low acoustic impedance materials.The project will leverage close ties between the P.I. and Prof. Christian Grosse of Stuttgart University, Germany. We will use the large scale test beds and actual field monitoring that will be made for his EU project, and gain a wireless platform with onboard processing power, built specifically for AE.