Abstract
Fiber optical Bragg grating sensors are of high interest for long term surveillance of structural elements in mechanical and 'civil engineering applications. Uncoated, acrylate and polyimide coated fiber Bragg gratings, and gratings embedded in glass fiber reinforced polymer rods (GFRP) during a continuous pultrusion process on a full-scale production machine were spectrally characterized while subjected to both strain up to 20'000 µm/m and temperature between-40 °C and 80 °C.
© 1998 IEEE
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