Damage detection system for structural composite material and method of detecting damage to structural composite material

摘要

Damage caused to a structural composite material (Z) is detected while reduction in the strength thereof is prevented. A damage detection system (10) for a structural composite material (Z) comprises a vibration application apparatus (20) including: a sheet body (22); a plurality of piezo elements (21) sprinkled throughout and held by the sheet body (22); and wires (23) for the piezo elements (21) provided to the sheet body (22). The damage detection system (10) also comprises: a fiber optic sensor (30) which includes a grating portion (33) in a core portion (32) thereof, the grating portion (33) reflecting light of a predetermined wavelength; a light source to perform light irradiation onto the core portion (32); and a characteristic detection unit (42) to detect a characteristic of the light reflected from the grating portion (33).