Application of Fiber Bragg Grating Sensors for Dynamic Tests in Wind Tunnels

Suryanarayana G.K., Singh D.B.


This paper presents an introduction to Fiber Bragg Grating(FBG) sensors and a typical application for dynamic tests in wind tunnels.Bench tests were carried out to measure the dynamic response of a crossflexure pivot using FBG sensor and a conventional strain gage sensorsimultaneously. The results suggest that FBG sensors, which are mucheasy to handle as compared to strain gages, can be effectively used formeasurement of dynamic derivatives in a wind tunnel.


Damping derivatives, Dynamic testing, Wind tunnels, Forced oscillation, FBG sensors

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