发明名称 |
Nondestructive testing apparatus |
摘要 |
A nondestructive testing apparatus is provided with a wave transmitter by a metal-based magnetostrictive vibrator, a magnetically excited current feeding device for feeding the magnetically excited current to the magnetostrictive vibrator, a wave receiver for detecting an acoustic elastic wave propagating through the measurement object, a filter for extracting a signal in a target frequency band to be measured, and an automatically amplifying rate controlling function-equipped amplifier for automatically controlling the amplifying rate so as to obtain a given magnitude amplitude regardless of the magnitude of the reflection wave or the transmission wave detected by the wave receiver, which constitute a feedback loop. The apparatus is further provided with a signal processor for processing the signal detected by the above-described wave receiver, and a display device for displaying the process result obtained by the signal waveform detected by the above-described wave receiver or the above-described signal processor.
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申请公布号 |
US6202490(B1) |
申请公布日期 |
2001.03.20 |
申请号 |
US20000562037 |
申请日期 |
2000.05.01 |
申请人 |
MITSUBISHI DENKI KABUSHIKI KAISHA;MATSUHASHI TECHNO RESEARCH CO., LTD. |
发明人 |
TANIGUCHI RYOSUKE;HATTORI SHINICHI;SAKAMOTO TAKAHIRO;SHIMADA TAKASHI;MATSUHASHI KANJI |
分类号 |
G01B17/00;G01B17/02;G01N29/24;G01N29/40;G01N29/42;G01N29/46;(IPC1-7):G01N29/00 |
主分类号 |
G01B17/00 |
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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