Abstract
In order to monitor damages in Carbon Fiber Reinforced Plastic (CFRP) laminates, it is attempted to detect transmitted waves in laminates using embedded small-diameter fiber Bragg Grating (FBG) sensors. In this research, velocities of elastic waves in CFRP unidirectional laminates and quasi-isotopic laminates were calculated theoretically. Then the relationship between the grating length and the wavelength of the elastic wave was simulated. From these results, the optimum grating length to detect elastic waves was determined.
