Experimental validation of a numerically determined multi-axial strain transfer from CFRP-laminates to embedded Bragg sensors

Embedded optical fibre sensors are considered in numerous applications for structural health monitoring purposes. Since the optical fibre and the host material in which it is embedded, have different material properties, strain in both materials will not be equal when external load is applied. In this paper, an experimental evaluation of the response of uni-axial fibre Bragg grating sensors embedded in small cross-ply composite laminates subjected to out-of-plane transverse loading is discussed