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:
Jan. 04, 2005
Filed:
Mar. 15, 2002
Toshihiro Ohtani, Kanagawa, JP;
Toshihiro Ohtani, Kanagawa, JP;
Ebara Corporation, Tokyo, JP;
Abstract
A diagnosing method and apparatus non-destructively performing damage evaluation of a piled up structure of conductive materials by using acoustic waves. The diagnosing method according to the present invention includes the steps of placing an electro-magnetic acoustic transducerout of contact with a piled up structureof conductive materialsandpiled up with a non-conductive interface() interposed therebetween, transmitting ultrasonic waves from one sideof the piled up structure by the electro-magnetic acoustic transducer, receiving ultrasonic waves reflected from the other side of the piled up structure, and diagnosing a damaged condition of the piled up structure on the basis of the ultrasonic velocity and attenuation of the received ultrasonic waves.