The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 13, 2007
Filed:
Sep. 23, 2004
Toshimichi Ogisu, Tokyo, JP;
Masakazu Shimanuki, Tokyo, JP;
Nobuo Takeda, Saitama, JP;
Fuji Jukogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
Damage caused to a structural composite material is detected while reduction in the strength thereof is prevented. A damage detection systemfor a structural composite material includes a vibration application apparatusincluding: a sheet body; a plurality of piezo elementssprinkled throughout and held by the sheet body; and wiresfor the piezo elementsprovided to the sheet body. The damage detection systemalso includes: a fiber optic sensorwhich includes a grating portionin a core portionthereof, the grating portionreflecting light of a predetermined wavelength; a light source to perform light irradiation onto the core portion; and a characteristic detection unitto detect a characteristic of the light reflected from the grating portion