Magnetic flaw detection method, magnetic field measurement processing apparatus, and magnetic flaw detection apparatus

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United States of America Patent

PATENT NO 11835483
APP PUB NO 20230108846A1
SERIAL NO

17911050

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Abstract

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A magnetic flaw detection method includes a magnetization step (S2) of moving a magnet (21) in a predetermined direction (D) along a surface of an object (7) that is a magnetic body and subsequently removing the magnet (21) from the surface of the object (7) to magnetize a region (R) corresponding to a movement range of the magnet (21) on the object (7), a sensor arrangement step (S3) of arranging a magnetic sensor (35a) to be capable of measuring magnetic flux leakage (8) generated from an abnormal portion (72) of the region (R) that was magnetized in the object (7), and a detection step (S4) of detecting an abnormality in the region (R) with the magnetic sensor (35a) arranged by the sensor arrangement step (S3).

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Patent Owner(s)

Patent OwnerAddress
YOKOGAWA ELECTRIC CORPORATION2-9-32 NAKACHO MUSASHINO-SHI TOKYO 180-8750

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Mito, Shinya Tokyo, JP 9 11
Miyazawa, Kazunori Tokyo, JP 21 109
Shiosaki, Shoichi Tokyo, JP 3 0
Takeda, Shoma Tokyo, JP 4 0
Terao, Fumitake Tokyo, JP 3 1

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