发明名称 |
METHOD OF MEASURING HYDROGEN CONCENTRATION IN MEMBER AND DEVICE OF MEASURING HYDROGEN CONCENTRATION |
摘要 |
An art of hydrogen concentration measurement in which the hydrogen concentration of any given location of an object to be measured can be nondestructively obtained is provided. The steps comprises: placing an electromagnetic ultrasonic sensor 2 in the proximity of, or on, the surface of an object to be measured 8, said electromagnetic ultrasonic sensor 2 generating a magnetic field in which the magnetic flux density changes at high frequency on the wall body of the object to be measured 8 and receiving a longitudinal ultrasonic wave whose vibration is deflecting in the direction parallel to the thickness direction and a transverse ultrasonic wave whose vibration is deflecting in the direction at an angle of substantially 90° with respect to said longitudinal direction; allowing the electromagnetic ultrasonic sensor 2 to generate a changing magnetic field so that the longitudinal ultrasonic wave and the transverse ultrasonic wave form a resonant state and receive the longitudinal ultrasonic wave and the transverse ultrasonic wave generated in the object to be measured 8; detecting the resonance frequencies of the longitudinal ultrasonic wave and the transverse ultrasonic wave; calculating a predetermined resonance property index using said resonance frequencies of the longitudinal ultrasonic wave and the transverse ultrasonic wave; and calculating the hydrogen concentration of the object to be measured 8 with reference to a reference material database 7 which stores the relation between the hydrogen concentration of a member with the same member specifications as those of said object to be measured and the resonance property index.
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申请公布号 |
EP1867981(A1) |
申请公布日期 |
2007.12.19 |
申请号 |
EP20060745368 |
申请日期 |
2006.03.16 |
申请人 |
THE TOKYO ELECTRIC POWER COMPANY INCORPORATED;GLOBAL NUCLEAR FUEL-JAPAN CO., LTD. |
发明人 |
ISHII, YOSHIAKI;MIYAZAKI, AKIHIRO;NAKATSUKA, MASAFUMI;ISHIMOTO, SHINJI |
分类号 |
G01N29/12;G01N29/04 |
主分类号 |
G01N29/12 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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