Torsion Test of Composite Beams Using Fiber Bragg Grating Sensors for Structural Health Monitoring Applications

Cansu KARATAS, Boray Degerliyurt, Yavuz Yaman and Melin Sahin

Fiber Bragg Grating sensors are commonly being used for Structural Health Monitoring of aeronautical structures. Fiber Bragg Grating sensors are convenient especially for Structural Health Monitoring of composite structures, such as helicopter blades and wind turbine blades, considering the ability of embedment between the layers. In this study, a Structural Health Monitoring system of composite beams equipped with surface bonded and embedded Fiber Bragg Grating sensors is introduced. Torsion tests of the composite beams are conducted to observe the performance of the system by monitoring the torque and shear strain. Validation of the test results are achieved by comparing the results obtained from the Finite Element Analyses and the performed tests. In addition, manufacturing methods and precautions to avoid plausible harms to the sensors are presented.

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