Fibre optic in fibre Bragg grating sensors for use in composite material structural element characterization and structural monitoring
For use in practical structural monitoring in-fibre Bragg grating based sensors appear to be one of the best choices currently available. There are several advantages inherent in using Bragg grating based sensors, which include insensitivity to power fluctuations due to the wavelength encoding, easy multiplexibility, and point-like measurement capability. The main aspects of the development of an all-fibre passive demodulation scheme for in-fibre Bragg grating sensors using a many-cycle directional coupler are reported. Results of tests employing optical fibre and other optical nondestructive testing (NDT) techniques in 2 application areas of composite materials are presented.
Bibliographic Reference: Paper presented: Optical Techniques for Smart Structures and Smart Monitoring, London (GB), February 17, 1997
Availability: Available from (1) as paper EN 40348 ORA
Record Number: 199710508 / Last updated on: 1997-05-09
Original language: en
Available languages: en