Monitoring of non-homogeneous strains in composites with embedded wavelength multiplexed fiber Bragg gratings: A methodological study

For the detection of problems like fastening failures and delamination in composites, the employment of embedded fiber Bragg grating (FBG) sensors is considered an effective tool to measure non-homogeneous internal strains near damage or interfaces of dissimilar materials which in turn can help identify the severity of fracture. In this work wavelength multiplexed FBGs are used to measure strains during gradual adhesive fastening failure in a...