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:
Oct. 09, 2012
Filed:
Jan. 23, 2007
Duck-gun Park, Daejeon, KR;
Derac Son, Daejeon, KR;
Kwon-sang Ryu, Daejeon, KR;
Dae-hyuk Jyung, Seoul, KR;
Whung-whoe Kim, Daejeon, KR;
Duck-Gun Park, Daejeon, KR;
Derac Son, Daejeon, KR;
Kwon-Sang Ryu, Daejeon, KR;
Dae-hyuk Jyung, Seoul, KR;
Whung-whoe Kim, Daejeon, KR;
Korea Atomic Energy Research Institute, Daejeon, KR;
Abstract
A detection apparatus for an eddy current in a heat generating tube using a permeability measurement method, and a method using the apparatus are provided. In the detection apparatus, a bobbin type probe acquires detection information with respect to a magnetic flux change by a magnetic phase occurring in the heat generating tube using a coil which is wound in an axis direction of at least one yoke located in a perpendicular direction with a bobbin of the bobbin type probe, and a material having a corresponding magnetic phase and a circumferential defect, which is difficult to be detected by the bobbin type probe, are detected based on the detection information.