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:
Mar. 12, 2013
Filed:
May. 18, 2007
Yukinori Iizuka, Kawasaki, JP;
Kazuhito Kenmochi, Chiba, JP;
Hiroyasu Yokoyama, Handa, JP;
Tomohiro Inoue, Kawasaki, JP;
Shigeto Sakashita, Kawasaki, JP;
Yukinori Iizuka, Kawasaki, JP;
Kazuhito Kenmochi, Chiba, JP;
Hiroyasu Yokoyama, Handa, JP;
Tomohiro Inoue, Kawasaki, JP;
Shigeto Sakashita, Kawasaki, JP;
JFE Steel Corporation, Tokyo, JP;
Abstract
The present invention has a structure capable of detecting the scattered-type penetrator having oxides each with the size of several μm sparsely and widely dispersed. Specifically, the structure includes a wave transmission unitfor transmitting an ultrasonic wave to the welded surface of the welded portionin a pipe axial direction of the pipesuch that the beam width of a transmission beamis brought into a range from 0.5 mm to 2.5 mm, and a wave reception unitfor receiving at least a portion of the reflection wave (reception beam) at the welded surface. The wave transmission unitand the wave reception unitinclude transmission/reception units formed of different groups of transducer elements on at least one or more array probesarranged in the circumferential direction of the pipe.