发明名称 |
ELECTROMAGNETIC ACOUSTIC TRANSDUCER FOR TUBE INSPECTION |
摘要 |
<p>ELECTROMAGNETIC TRANSDUCER FOR TUBE INSPECTION An electromagnetic transducer for exciting selected modes of ultrasonic vibration in a tubular body. The transducer includes a plurality of rows of permanent magnets of alternating polarity with a coil provided about the magnets whereby a current is conducted through the magnetic fields. The rows of magnets are provided in carriers which are yieldably biased towards the inner surface of a tubular body during inspection.</p> |
申请公布号 |
CA1160335(A) |
申请公布日期 |
1984.01.10 |
申请号 |
CA19800362705 |
申请日期 |
1980.10.17 |
申请人 |
ROCKWELL INTERNATIONAL CORPORATION |
发明人 |
VASILE, CARMINE F.;PETERSON, WILLIAM E.;THOMPSON, ROBERT B. |
分类号 |
B06B1/04;G01N29/24;(IPC1-7):G01N29/04 |
主分类号 |
B06B1/04 |
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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