Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Reexamination Certificate
2007-02-13
2007-02-13
Le, Que T. (Department: 2878)
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
C250S227160
Reexamination Certificate
active
10947312
ABSTRACT:
Damage caused to a structural composite material is detected while reduction in the strength thereof is prevented. A damage detection system10for a structural composite material includes a vibration application apparatus20including: a sheet body22; a plurality of piezo elements21sprinkled throughout and held by the sheet body22; and wires23for the piezo elements21provided to the sheet body22. The damage detection system10also includes: a fiber optic sensor30which includes a grating portion33in a core portion32thereof, the grating portion33reflecting light of a predetermined wavelength; a light source to perform light irradiation onto the core portion32; and a characteristic detection unit42to detect a characteristic of the light reflected from the grating portion33.
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Ogisu Toshimichi
Shimanuki Masakazu
Takeda Nobuo
Birch & Stewart Kolasch & Birch, LLP
Fuji Jukogyo Kabushiki Kaisha
Le Que T.
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