Tunable laser based carbon composite strain sensing system using wavelength division multiplexed fiber Bragg grating sensors

Michael J. Connelly; Senan Moloney; Paul Butler

doi:10.1117/12.597723

16 May 2005 Tunable laser based carbon composite strain sensing system using wavelength division multiplexed fiber Bragg grating sensors

Michael J. Connelly, Senan Moloney, Paul Butler

Author Affiliations +

Proceedings Volume 5758, Smart Structures and Materials 2005: Smart Sensor Technology and Measurement Systems; (2005) https://doi.org/10.1117/12.597723
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2005, San Diego, California, United States

Abstract

A carbon composite strain sensing system using an embedded array of polymide-coated fiber Bragg grating sensors, which are interrogated by a tunable laser, is described. The system is controlled from a personal computer using a customized program. The system was tested using a composite panel consisting of 28 plies of carbon fiber. Consistent strain measurements were achieved using a laser scan resolution of 0.02 nm, which corresponds to a strain resolution of approximately 15 me. Simulations of the panel were carried out using the Marc/Mentat finite element program for advanced engineering analysis. The experimental results compared well to those obtained from the simulations.

Citation Download Citation

Michael J. Connelly, Senan Moloney, and Paul Butler "Tunable laser based carbon composite strain sensing system using wavelength division multiplexed fiber Bragg grating sensors", Proc. SPIE 5758, Smart Structures and Materials 2005: Smart Sensor Technology and Measurement Systems, (16 May 2005); https://doi.org/10.1117/12.597723

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