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. 18, 2011
Filed:
Dec. 09, 2009
Yutaka Suzuki, Hitachi, JP;
Masahiro Koike, Hitachi, JP;
Tetsuya Matsui, Hitachi, JP;
Kojirou Kodaira, Hitachinaka, JP;
Katsumi Isaka, Mito, JP;
Mitsuru Odakura, Hitachi, JP;
Kenji Tayama, Mito, JP;
Kazuhiro Suzuki, Hitachi, JP;
Kenji Kumasaka, Hitachi, JP;
Yuuji Adachi, Hitachi, JP;
Yutaka Suzuki, Hitachi, JP;
Masahiro Koike, Hitachi, JP;
Tetsuya Matsui, Hitachi, JP;
Kojirou Kodaira, Hitachinaka, JP;
Katsumi Isaka, Mito, JP;
Mitsuru Odakura, Hitachi, JP;
Kenji Tayama, Mito, JP;
Kazuhiro Suzuki, Hitachi, JP;
Kenji Kumasaka, Hitachi, JP;
Yuuji Adachi, Hitachi, JP;
Hitachi, Ltd., Tokyo, JP;
Hitachi Engineering & Services Co., Ltd., Ibaraki, JP;
Abstract
An eddy current testing method for a turbine rotor including a disc, a plurality of turbine blades disposed along the periphery of the disc, and a plurality of pins for joining a blade fork portion formed on each of the plurality of turbine blades to a disc fork portion formed on the disc, the method including inserting a probe having an eddy current testing sensor into a hole formed through the disc fork portion and the blade fork portion by pulling out one of the plurality of pins in a state that the blade fork portion is still inserted into the disc fork portion; and performing eddy current testing for at least part of an internal surface of the hole by using the probe.