发明名称 |
Method and means for ultrasonic inspection |
摘要 |
Ultrasonic inspection of a structure such as steel tubing is enhanced by moving the ultrasonic wave transmitter and receiver through the pipe and periodically injecting an ultrasonic pulse into the tube. Reflected waves are received during a sample period after each pulse injection. By proper selection of linear displacement between pulses and the sample time interval, the time reference of received signals can be adjusted whereby signals reflected from only one direction are coherently added.
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申请公布号 |
US4307612(A) |
申请公布日期 |
1981.12.29 |
申请号 |
US19790086511 |
申请日期 |
1979.10.19 |
申请人 |
ELECTRIC POWER RESEARCH INSTITUTE, INC. |
发明人 |
ELSLEY, RICHARD K.;THOMPSON, R. BRUCE |
分类号 |
G01N29/07;G01N29/265;G01N29/38;G01S15/89;(IPC1-7):G01N29/04 |
主分类号 |
G01N29/07 |
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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