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

摘要

Damage caused to a structural composite material is detected while reduction in the strength thereof is prevented. A damage detection system 10 for a structural composite material includes 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 includes: 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.