Design and Experiment of PZT Network-based Structural Health Monitoring Scanning System

作     者：Qiu Lei Yuan Shenfang Wang Qiang Sun Yajie Yang Weiwei 

作者机构：The Aeronautic Key Lab for Smart Material and Structure Nanjing University of Aeronautics and Astronautics Nanjing 210016 China 

基　　金：Foundation items: National High-tech Research and Development Program of China (2007AA03Z117) National Natural Science Foundation of China (50830201) Graduate Education Innovation Project of Nanjing University of Aeronautics and Astronautics of China (BCXJ09-01) 

出 版 物：《Chinese Journal of Aeronautics》 (中国航空学报（英文版）)

年 卷 期：2009年第22卷第5期

页      码：505-512页

摘      要：The active Lamb wave and piezoelectric transducer （PZT）-based structural health monitoring （SHM） technology is a kind of efficient approach to estimate the health state of aircraft structure. In practical applications, PZT networks are needed to monitor large scale structures. Scanning many of the different PZT actuator-sensor channels within these PZT networks to achieve on-line SHM task is important. Based on a peripheral component interconnect extensions for instrumentation （PXI） platform, an active Lamb wave and PZT network-based integrated multi-channel scanning system （PXI-ISS） is developed for the purpose of practical applications of SHM, which is compact and portable, and can scan large numbers of actuator-sensor channels and perform damage assessing automatically. A PXI-based 4 channels gain-programmable charge amplifier, an external scanning module with 276 actuator-sensor channels and integrated SHM software are proposed and discussed in detail. The experimental research on a carbon fiber composite wing box of an unmanned aerial vehicle （UAV） for verifying the functions of the PXI-ISS is mainly discussed, including the design of PZTs layer, the method of excitation frequency selection, functional test of damage imaging, stability test of the PXI-ISS, and the loading effect on signals. The experimental results have verified the stability and damage functions of this system.

主 题 词：structural health monitoring active Lamb wave piezoelectric transducer network multi-channel scanning system damage detection 

学科分类：0810[工学-土木类] 080202[080202] 08[工学] 081001[081001] 0802[工学-机械学] 

核心收录：

D　O　I：10.1016/S1000-9361(08)60133-8

馆 藏 号：203263761...