Kabushiki Kaisha Toshiba

Noriyasu Kobayashi

Souichi Ueno

Tomoaki Takahashi

Hiroya Ichikawa

Daisuke Iwashita

Masahiro Yamada

Takeshi Maehara

Shigeki Maruyama

Takashi Kasuya

Tatsuya Oodake

Makoto Ochiai

Kota Nomura

Naotaka Suganuma

Naosuke Ote

Yuko Kitajima

An eddy-current flaw detector includes a trace data calculator configured to calculate each coordinate with respect to flaw detection points on which an inspection probe is used upon performing an eddy-current testing based on an inputted condition of eddy-current flaw detection and surface shape data of an inspection-object surface measured by a profilometer, and to calculate a normal vector of each flaw detection point; a gap evaluation calculator configured to acquire an evaluation result on a gap between the inspection-object surface and the inspection probe for each flaw detection point; a flaw detection data collector configured to acquire flaw detection data of an inspection object for each flaw detection point; a flaw detection data analyzer configured to evaluate presence/absence of a flaw in the inspection-object surface based on the flaw detection data of the inspection object and the evaluation result on the gap for each flaw detection point.

Eddy-current flaw detector and eddy-current flaw detection method

A joined component comprises a first heated body, a second heated body, a brazing material, a first heated portion and a second heated portion. The first body comprises an insertion opening and an inserted portion coupled with the insertion opening. The second body comprises an insertion portion inserted into the inserted portion through the insertion opening. The first heated portion is provided at a first position including at least a part of the inserted portion and at least a part of the insertion portion. The second heated portion is provided at a second position separate from the insertion portion where a ratio 'L/D' satisfies being 0.4 or more and 0.8 or less, where 'L' is a length from the insertion opening to the second portion and &#x201c;D&#x201d; is an outer diameter of the second heated body.

Induction heating device, joining method, joined component and rotary electric machine including the same

A method comprises: a step of disposing a coil end connection portion of a first stator coil end and a solid connection at mutually adjacent positions after the solid connection and the cooling water pipe are brazed together; a step of disposing a heating coil around the solid connection and the first stator coil end in such a way as to bypass the cooling water pipe connection portion; and a step of supplying the heating coil with alternating current, so that the solid connection and the first stator coil end are induce-heated and then connected.

Method of assembling rotary electric machine

There is provided an eddy current flaw detection technique capable of, even when inspecting an object having a narrow portion with a small curvature radius, recognizing detection sensitivity change due to change of attitude of a probe. An eddy current flaw detection apparatusincludes: an AC power sourcewhich generates an excitation magnetic field in each of excitation coilsaccommodated in a probeto excite an eddy current in an inspection object; a detecting sectionwhich detects a detection signal generated by an induction magnetic field induced by the eddy current in each of detection coilsaccommodated in the probe; an output sectionwhich outputs flaw detection data based on the detection signals; a storage sectionwhich mutually associates and stores the detection signals detected at the same timing from the plurality of coils; and an evaluating sectionwhich evaluates an attitude of the probebased on the plurality of detection signals detected at the same timing and associated with each other.

Eddy current flaw detection device, eddy current flaw detection method, and eddy current flaw detection program

Growing community of inventors

Yokohama, Japan

Noriyasu Kobayashi