发明名称 |
ZIG-ZAG ELECTROMAGNETIC ACOUSTIC TRANSDUCER SCAN |
摘要 |
A flaw detection method and arrangement utilizes electromagnetic acoustic transducers (EMATs) which ultrasonically test a material for cracks or flaws. Four EMATs are used in a pitch-catch configuration, i.e. two pairs of EMAT transmitters and receivers. The EMAT transmitters and receivers are arranged such that a first EMAT transmitter is located on the surface diagonally across from a first EMAT receiver and a second EMAT transmitter is located diagonally across from a second EMAT receiver. The first and second EMAT transmitters transmit ultrasonic signals to the first and second EMAT receivers respectively; and these ultrasonic signals are transmitted orthogonal to each other. A pulser/receiver is operatively connected to the first and second EMAT transmitters and the first and second EMAT receivers for inducing the EMAT transmitters to propagate their respective waves. The pulser/receiver also receives the signal transmitted through the material after being received by the first and second EMAT receivers. A power source is operatively connected to the pulser/receiver for powering the arrangement; and a computer or oscillator is operatively connected to the pulser/receiver for recording and displaying the signals.
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申请公布号 |
CA2151116(C) |
申请公布日期 |
1999.09.14 |
申请号 |
CA19952151116 |
申请日期 |
1995.06.06 |
申请人 |
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发明人 |
LATIMER, PAUL J.;MACLAUCHLAN, DANIEL T. |
分类号 |
G01N29/04;G01N29/24;G01N29/265;(IPC1-7):G01N29/04;G01N29/08;G01N29/20 |
主分类号 |
G01N29/04 |
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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