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http://dx.doi.org/10.7234/kscm.2011.24.1.024

Impact Monitoring of Composite Structures using Fiber Bragg Grating Sensors  

Jang, Byeong-Wook (한국과학기술원 기계공학과 항공우주공학 대학원)
Park, Sang-Oh (삼성전자 반도체연구소 공정개발팀)
Lee, Yeon-Gwan (한국과학기술원 기계공학과 항공우주공학 대학원)
Kim, Chun-Gon (한국과학기술원 기계공학과 항공우주공학)
Park, Chan-Yik (국방과학연구소 제7기술연구본부)
Lee, Bong-Wan ((주)파이버프로)
Publication Information
Composites Research / v.24, no.1, 2011 , pp. 24-30 More about this Journal
Abstract
Low-velocity impact can cause various damages which are mostly hidden inside the laminates or occur in the opposite side. Thus, these damages cannot be easily detected by visual inspection or conventional NDT systems. And if they occurred between the scheduled NDT periods, the possibilities of extensive damages or structural failure can be higher. Due to these reasons, the built-in NDT systems such as real-time impact monitoring system are required in the near future. In this paper, we studied the impact monitoring system consist of impact location detection and damage assessment techniques for composite flat and stiffened panel. In order to acquire the impact-induced acoustic signals, four multiplexed FBG sensors and high-speed FBG interrogator were used. And for development of the impact and damage occurrence detections, the neural networks and wavelet transforms were adopted. Finally, these algorithms were embodied using MATLAB and LabVIEW software for the user-friendly interface.
Keywords
impact monitoring; composite structures; fiber Bragg grating sensor; high-speed FBG interrogator;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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