Conference proceeding
Lamb wave-based damage detection of composite shells using high-speed fiber-optic sensing
Proceedings of SPIE - The International Society for Optical Engineering, Vol.9062, pp.906214-906214-12
04/10/2014
Handle:
https://hdl.handle.net/2376/106446
Abstract
A Lamb wave-based damage identification method called damage imaging method for composite shells is presented. A
damage index (DI) is generated from the delay matrix of the Lamb wave response signals, and it is used to indicate the
location and approximate area of the damage. A piezoelectric actuator is employed to generate the Lamb waves that are
subsequently captured by a fiber Bragg grating (FBG) sensor element array multiplexed in a single fiber connected to a
high-speed fiber-optic sensor system. The high-speed sensing is enabled by an innovative parallel-architecture optical
interrogation system. The viability of this method is demonstrated by analyzing the numerical and experimental Lamb
wave response signals from laminated composite shells. The technique only requires the response signals from the plate
after damage, and it is capable of performing near real-time damage identification. This study sheds some light on the
application of a Lamb wave-based damage detection algorithm for curved plate/shell-type structures by using the
relatively low frequency (around 100 kHz) Lamb wave response and the high-speed FBG sensor system.
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Details
- Title
- Lamb wave-based damage detection of composite shells using high-speed fiber-optic sensing
- Creators
- Vahid Sotoudeh - Intelligent Fiber Optic Systems Corp. (United States)Richard J Black - Intelligent Fiber Optic Systems Corp. (United States)Behzad Moslehi - Intelligent Fiber Optic Systems Corp. (United States)Pizhong Qiao - Washington State Univ. (United States)
- Contributors
- Wolfgang Ecke (Editor) - Institut für Photonische Technologien e.V. (Germany)Kara J Peters (Editor) - North Carolina State Univ. (United States)Norbert G Meyendorf (Editor) - Fraunhofer IKTS-CMD (Germany)
- Publication Details
- Proceedings of SPIE - The International Society for Optical Engineering, Vol.9062, pp.906214-906214-12
- Academic Unit
- Civil and Environmental Engineering, Department of
- Publisher
- SPIE
- Identifiers
- 99900546727401842
- Language
- English
- Resource Type
- Conference proceeding