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365 views
09:04 Oct-11-2004
Dipl.-Ing. Martin Heinz
Dry coupling of ultrasonic transducers to steel

What materials are suitable for building up dry coupling cushions? Silicon and PU-elastomers has a very low acoustic impedances even if they are filled by e.g. tungsten powder (maximum about 3 MRayl) . So the acoustic loss is large. Are there other materials which could provide acoustic impedances of op to 10 MRayls and more?
What acoustic impedances does couplants as sonogel have?


 
08:50 Nov-12-2005
ali fardi
Re: Dry coupling of ultrasonic transducers to steel ----------- Start Original Message -----------
: What materials are suitable for building up dry coup Silicon and PU-elastomers has a very low acoustic impedances even if they are filled by e.g. tungsten powder (maximum about 3 MRayl) . So the acoustic loss is large. Are there other materials which could provide acoustic impedances of op to 10 MRayls and more?
: What acoustic impedances does couplants as sonogel have?
------------ End Original Message ------------





 


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