发明名称 |
Ultrasonic testing device for boundary surfaces |
摘要 |
The testing device has a transmitter (1,3,6) coupled to a transmitter head (9) for providing a pulsed signal of variable amplitude. The signal is reflected at a boundary surface, received and subjected to frequency modulation.The separated base frequency amplitudes provided by the demodulator are summed with one another and with a further harmonic frequency component of the frequency modulated measuring signal obtd. from the boundary surface via a summator (26) providing the output signal of the testing device.
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申请公布号 |
DE4324143(C1) |
申请公布日期 |
1994.07.14 |
申请号 |
DE19934324143 |
申请日期 |
1993.07.19 |
申请人 |
FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E.V., 80636 MUENCHEN |
发明人 |
ARNOLD, WALTHER, DR., 66119 SAARBRUECKEN;PANGRAZ, SILVIA, 66113 SAARBRUECKEN |
分类号 |
G01N29/34;(IPC1-7):G01N29/22;G01S17/88 |
主分类号 |
G01N29/34 |
代理机构 |
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代理人 |
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主权项 |
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