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Technical Discussions
Dipl.-Ing. Martin Heinz
Dipl.-Ing. Martin Heinz
09:04 Oct-11-2004
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?


    
 
 
ali fardi
ali fardi
08:50 Nov-12-2005
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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