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mecharine
Associate

Join Date: Jul 2007
Location: New York City
Posts: 28

low impedence dry couplants for ultrasonic application

04/01/2008 3:27 PM

My company has been looking for a dry couplant for use with ultrasonic transducers. So far we have tested couplants used in other products as well as Aqualene elastomer couplant. So far, these couplants have not met our performance expectations.

Are there any dry couplants that dont create a considerable drop in signal strength? If so, what are they?
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Debby
Participant

Join Date: Apr 2008
Posts: 1
#1

Re: low impedence dry couplants for ultrasonic application

04/02/2008 3:02 AM

I've been using a plastic called TPX (http://www.boedeker.com/tpx_p.htm) but I do use a little liquid (silicon oil) between the transducer matching layer and the TPX. Is Aqualene biocompatible?
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mecharine
Associate

Join Date: Jul 2007
Location: New York City
Posts: 28
#2

Re: low impedence dry couplants for ultrasonic application

04/02/2008 2:27 PM

After a bit of research I found this hydrophilic couplant http://www.nexus-bg.com/hcouplant.html

After some more research I found an article that compared various couplants such as PMMA and Aqulene with a hydrophilic couplant. http://www.ndt.net/article/ecndt2006/doc/We.1.6.5.pdf

After reading through the article, I am under the impression that a hydrophilic couplant would be the ideal dry couplant. Does anyone else agree?
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Rmacneil
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Join Date: Oct 2014
Posts: 1
#3
In reply to #2

Re: low impedence dry couplants for ultrasonic application

01/26/2017 10:02 AM

Innovation Polymers supplies dry couplant polymers we continue to develop and improve our materials. www.innovationpolymers.ca
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