Simultaneous strain and failure sensing of composite beam using an embedded fiber optic extrinsic Fabry-Perot sensor

摘要: The fiber optic extrinsic Fabry-Perot sensor was embedded in composite beam to sense the strain and failure of structures. A tensile test performed confirm sensitivity specimens. showed very good agreement with theoretical value. bending deformation matrix cracking were investigated through four-point tests cross-ply beams sensor. due cracks confirmed by an edge replica method. signals separated digital filtering from signal instants obviously noticeable obtained high pass filtering. dominant determined low