Fibre optic sensors are increasingly being used in aerospace and smart technology applications. Their compatibility with fibre reinforced composite materials and their high multiplexing abilities makes them particularly attractive as embedded strain sensors in aerospace structures. Integral fibre optic strain sensor arrays have been used to monitor strain cycling in horizontal-axis wind turbine rotor blades. Adaptation of this technology for use as integrated dynamic strain sensor networks within a fibre reinforced composite Mach scaled helicopter rotor blade presents, however, some unique challenges. In this paper, an investigation into fibre optic strain sensory technology leads to the development of a conceptual fibre optic sensing system for this application, using the Smart Hybrid Active Rotor Control System (SHARCS) preliminary rotor blade design as example. As a major part of this work, a series of experiments is conducted using fibre Bragg grating strain sensors on cantilever beams to verify their strain measurement ability.

Additional Metadata
Keywords Composite, Fibre optic, Measurement, Sensor, Strain
Conference 18th International Conference on Adaptive Structures and Technologies, ICAST 2007
Citation
Furlong, P.A.C. (P. A.C.), Tan, C, & Nitzsche, F. (2007). Strain measurement of composite materials using fibre optic sensors. In Carleton University - 18th International Conference on Adaptive Structures and Technologies, ICAST 2007 (pp. 715–726).