Title:
非破壊検査測定システムの較正装置および非破壊検査測定方法
Document Type and Number:
Japanese Patent JP6740077
Kind Code:
B2
Abstract:
A calibration device for a non-destructive inspection/measurement system is provided, including an excitation coil; a detection coil; and a computer that applies a sinusoidal signal or a combined signal including multiple sinusoids having mutually different frequencies to the excitation coil in order to excite a pipe body, and that detects changes in the output voltage of the detection coil. The calibration device calibrates the detection results in the computer by entering, as variables in simultaneous equations, the amplitudes and phase differences of the output voltage of the detection coil at multiple calibration points of known thickness on the pipe body. The calibration device performs calibrations by using multiple different calibration conditions at each of the calibration points, and entering, into the simultaneous equations, the amplitudes and phase differences of the output voltage of the detection coil for each of the calibration conditions.
Inventors:
Kazuma Takakura
Yoshizumi Dei
Kaizuka Mao
Yoshizumi Dei
Kaizuka Mao
Application Number:
JP2016197270A
Publication Date:
August 12, 2020
Filing Date:
October 05, 2016
Export Citation:
Assignee:
Dainichi Machine Industry Co., Ltd.
International Classes:
G01N27/72
Domestic Patent References:
| JP2014077770A | ||||
| JP2015087168A | ||||
| JP2016008931A | ||||
| JP2014219205A | ||||
| JP2016085061A |
Foreign References:
| US20100117636 |
Attorney, Agent or Firm:
Sonoda/Kobayashi Patent Business Corporation