Dual-Fibre Bragg Grating Sensor for Simultaneous Temperature and Strain Sensing of Composite Materials Manufacturing

Abstract : The Optical Fibre Sensors (OFS)-based monitoring of a composite part during its manufacturing process is presented. The sensor is made of a dual grating, i.e. a standard FBG and a Long Period Grating (LPG) photo-written at the same location, which provides accurate temperature and strain measurements, as well as a good spatial resolution. By using the differences of sensitivities of each grating, this dual-sensor is able to discriminate and to determine accurately temperature and strain. The dual-sensor has been tested during the curing of a pure epoxy resin, and a composite part obtained by Liquid Resin Infusion (LRI) process. Such dual-grating sensor is also very promising for SHM of composite parts.
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Communication dans un congrès
Le Cam, Vincent and Mevel, Laurent and Schoefs, Franck. EWSHM - 7th European Workshop on Structural Health Monitoring, Jul 2014, Nantes, France. 2014
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  • HAL Id : hal-01021254, version 1

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Emmanuel Marin, Youcef Ouerdane. Dual-Fibre Bragg Grating Sensor for Simultaneous Temperature and Strain Sensing of Composite Materials Manufacturing. Le Cam, Vincent and Mevel, Laurent and Schoefs, Franck. EWSHM - 7th European Workshop on Structural Health Monitoring, Jul 2014, Nantes, France. 2014. 〈hal-01021254〉

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