Paper number 668
|ON MINIMISING THE OBTRUSIVITY OF AN OPTICAL FIBRE SENSOR WITH RESPECT TO MATRIX CRACKING|
E.N. Barton1, S.L. Ogin1, A.M.Thorne2 and G.T. Reed3
1School of Mechanical and Material Engineering
2School of Engineering in the Environment
3School of Electronic Engineering, Information and Mathematics
University of Surrey, Guildford, Surrey GU2 5XH, UK
|Summary||A numerical study has been carried out to minimise the obtrusivity of a fibre optical sensor located near the 0/90 interface of a model GFRP crossply laminate. The results show that minimum obtrusivity can be achieved with an appropriate choice of coating thickness and Young's modulus. The numerical modelling results are in good agreement with previous work on sensors embedded in unidirectional composites. An experimental study using three different optical sensor coatings for a sensor in a model GFRP crossply laminate showed no effect on matrix crack initiation and accumulation under quasi-static loading due to the incorporation of the sensor.
||Keywords|| obtrusivity, fibre optic sensor, crossply GFRP, numerical analysis and experiment.
Theme : Smart Materials and Smart Manufacturing
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