Remote structural health monitoring with serially multiplexed fiber optic acoustic emission sensors

被引：0

作者：

陈仲裕

梁玉进

Farhad Ansari

机构：

[1] Civil & Materials Engineering,Smart Sensors & NDT Laboratory,University of Illinois at Chicago,Chicago,IL 60607 Graduate Research Assistant

[2] Civil & Materials Engineering,Smart Sensors & NDT Laboratory,University of Illinois at Chicago,Chicago,IL 60607 Professor & Head

[3] Shanghai Institute for Optics & Fine Mechanics.Shanghai 201800,China Visiting Scholar

来源：

Earthquake Engineering and Engineering Vibration | 2003年 / 2卷 / 01期

基金：

美国国家科学基金会;

关键词：

acoustic emission; crack detection; concrete; earthquake; fiber optic sensors; FRP tendon; multiplexing; post seismic; structural health monitoring;

D O I：

暂无

中图分类号：

TU317 [结构试验与检验];

学科分类号：

081304 ; 081402 ;

摘要：

Development and testing of a serially multiplexed fiber optic sensor system is described.The sensor differsfrom conventional fiber optic acoustic systems,as it is capable of sensing AE emissions at several points along the length ofa single fiber.Multiplexing provides for single channel detection of cracks and their locations in large structural systems.An algorithm was developed for signal recognition and tagging of the AE waveforms for detection of" crack locations,Labora-tory experiments on plain concrete beams and post-tensioned FRP tendons were pcrlormed to evaluate the crack detectioncapability of the sensor system.The acoustic emission sensor was able to detect initiation,growth and location of the cracksin concrete as well as in the FRP tendons.The AE system is potentially suitable lot applications involving health monitoringof structures following an earthquake.

引用

页码：141 / 146

页数：6

共 3 条

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Ansari, F. .

Cement and Concrete Composites, 1997, 19 (01) :3-19

[3]

Wide-band Polarization-insensitive Fiber Optic Acot,stic Sensors .2 Shih ST. Opt.Eng . 1998

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