Fail-safe sensor for structural health monitoring

Dethlefsen, A, Li, H, Davis, C and Stoddart, P 2008, 'Fail-safe sensor for structural health monitoring', in Proceedings of SPIE: 19th International Conference on Optical Fibre Sensors, Perth, Australia, 14-18 April 2008.


Document type: Conference Paper
Collection: Conference Papers

Title Fail-safe sensor for structural health monitoring
Author(s) Dethlefsen, A
Li, H
Davis, C
Stoddart, P
Year 2008
Conference name 19th International Conference on Optical Fibre Sensors
Conference location Perth, Australia
Conference dates 14-18 April 2008
Proceedings title Proceedings of SPIE: 19th International Conference on Optical Fibre Sensors
Publisher SPIE - The International Society for Optical Engineering
Place of publication Bellingham, United States
Abstract This paper introduces the concept of a fail-safe sensor to monitor the structural health of a composite repair. The low-cost fiber Bragg grating (FBG) sensor system consists of a light source, two specially designed fiber Bragg gratings and a photodiode detector. This system is applied to a typical bonded composite scarf joint often employed in aerospace structures. A finite element model is developed to assess the change in strain distribution as the result of a structural debond. The proposed monitoring system will be validated through an experimental investigation.
Subjects Structural Engineering
DOI - identifier 10.1117/12.785925
Copyright notice ©2008 COPYRIGHT SPIE--The International Society for Optical Engineering
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