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http://dx.doi.org/10.5139/JKSAS.2004.32.7.037

Real-time impact location monitoring using the stabilized Bragg grating sensor system  

Bang, Hyung-Joon (한국과학기술원 항공우주공학전공 대학원)
Hong, Chang-Sun (한국과학기술원 항공우주공학전공)
Kim, Chun-Gon (한국과학기술원 항공우주공학전공)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.32, no.7, 2004 , pp. 37-42 More about this Journal
Abstract
In order to monitor the impact locations in smart structures, multipoint ultrasonic sensors are to be employed. In this study, a multiplexing demodulator with wide dynamic range was proposed to detect the impact locations using FBG sensors, and a stabilization controlling system was also developed for the maintenance of maximum sensitivity of sensors. Two FBG sensors were attached on the bottom side of the aluminum beam specimen and low velocity impact tests were performed to detect the one-dimensional impact locations. As a result, multiplexed in-line FBG sensors could detect the moment of impact precisely, and found the impact locations with the average location error below 0.58mm.
Keywords
Smart Structures; Bragg Grating Sensors; Stabilization Control; Impact Monitoring;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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