Re: Face plate thickness

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Re: Face plate thickness
Posted by: Steve Jones , E-mail: Stevie.Jones@btinternet.com, on October 04, 1996 at 15:01:44:
In Reply to: Re: Face plate thickness posted by : Robert A. Day on October 04, 1996 at 12:36:25:
Rocky,
: Steve -
: Not knowing the impedance is puzzling. Do you mean there is one and you
: just don't know it? Or will it vary from part to part or within the part?
: Even in these cases you should have some bounds?
I was thinking of general purpose use, where the material could be steel,
or aluminium, or maybe plastic, or ... and you don't want to have hundreds of
pounds tied up in transducers.
: In most cases you should be able to do well with any good quality contact
: transducer. If much "scrubbing" is involved I would recommend the aluminum
OK, you can get by with just about anything. I was wondering if the
academic community had any suggestions for more than
just getting by. It seems not, which is understandable.
: Regards,
: Rocky
: Second Sound

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: Rocky, : : Steve - : : Not knowing the impedance is puzzling. Do you mean there is one and you : : just don't know it? Or will it vary from part to part or within the part? : : Even in these cases you should have some bounds? : I was thinking of general purpose use, where the material could be steel, : or aluminium, or maybe plastic, or ... and you don't want to have hundreds of : pounds tied up in transducers. : : In most cases you should be able to do well with any good quality contact : : transducer. If much "scrubbing" is involved I would recommend the aluminum : OK, you can get by with just about anything. I was wondering if the : academic community had any suggestions for more than : just getting by. It seems not, which is understandable. : : Regards, : : Rocky : : Second Sound

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