发明名称 |
ULTRASONIC METHOD AND APPARATUS FOR DETECTING AND IDENTIFYING CONTAMINATION SUCH AS ICE ON THE SURFACE OF A STRUCTURE |
摘要 |
A method and an apparatus for detecting and identi- fying a contaminant, such as ice, on the surface of a structure, such as a wing, are disclosed. The apparatus has a probe having a delay block with an interface apt to be placed flush with the surface of the structure and two faces at the same angle of inclination relative to the interface and having transmission and reception trans- ducers each oriented perpendicularly to one of the faces. The block has an acoustic impedance lying in the range of 0.7 to 3 x 10 6 kg/m2.s. It further has an energization and analysis unit for applying an electrical energization pulse to the transmission transducer and comparing the amplitude and the phase of the echo from the interface with a reference echo corresponding to no contamination.
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申请公布号 |
CA2120639(C) |
申请公布日期 |
2004.03.23 |
申请号 |
CA19942120639 |
申请日期 |
1994.04.06 |
申请人 |
INTERTECHNIQUE |
发明人 |
LARUE, FRANCOIS;BISSON, JEROME |
分类号 |
B64D15/20;G01N29/09;G01N29/44;(IPC1-7):G01N29/10;G01S15/88 |
主分类号 |
B64D15/20 |
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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