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1. (WO2017154141) DEVICE FOR DETECTING FLAW IN FLOOR SLAB

Pub. No.:    WO/2017/154141    International Application No.:    PCT/JP2016/057398
Publication Date: Fri Sep 15 01:59:59 CEST 2017 International Filing Date: Thu Mar 10 00:59:59 CET 2016
IPC: G01N 27/90
Applicants: MITSUBISHI ELECTRIC CORPORATION
三菱電機株式会社
Inventors: INOUE, Jin
井上 甚
KURATA, Emiko
倉田 恵美子
AZUMA, Tetsushi
東 哲史
Title: DEVICE FOR DETECTING FLAW IN FLOOR SLAB
Abstract:
A sensor (100) is provided with: excitation sources (104, 105) for applying, to a flaw in a floor slab (300) that is a metal structure, a magnetic field of which the orientation rotates; and a magnetic-field detector (106) for detecting a magnetic field by an eddy current that is an induced current generated in the metal structure by the action of electromagnetic inductance due to the application of the magnetic field by the excitation sources (105, 106). The sensor (100) is mounted in a vehicle (200) that moves on the floor slab (300).