안정화된 FBG 센서를 이용한 복합적층보에서의 충격위치검출Impact Monitoring in Composite Beam Using Stabilization Controlled FBG Sensor System

Cited 0 time in webofscience Cited 0 time in scopus
  • Hit : 444
  • Download : 424
Impact location monitoring is one of the major concerns of the smart health monitoring. For this application, multipoint ultrasonic sensors are to be employed. In this study, a multiplexed FBG sensor system with wide dynamic range was proposed and stabilization controlling system was also developed for the maintenance of maximum sensitivity of sensors. For the intensity demodulation system of FBG sensors, Fabry-Perot tunable filter(FP-TF) with 23.8nm FSR(free spectral range) was used, which behaves as two separate filters between nm range. Two FBG sensors were attached on the bottom side of the graphite/epoxy composite beam specimen, and low velocity impact tests were performed to detect the one-dimensional impact locations. Impact locations were calculated by the arrival time differences of the impact longitudinal waves acquired by the two FBGs. As a result, multiplexed in-line FBG sensors could detect the moment of impact precisely and found the impact locations with the average error of 1.32mm.
Publisher
한국복합재료학회
Issue Date
2004-04
Language
KOR
Citation

한국복합재료학회 2004년도 춘계학술발표대회, pp.103 - 106

URI
http://hdl.handle.net/10203/15624
Appears in Collection
AE-Conference Papers(학술회의논문)
Files in This Item
안정화된 FBG 센서를 이용한 복합적층보에서의 충격위치검출.pdf(229.57 kB)Download

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0