Abstract
In transducer material characterization, quarter wave matching layer samples are often measured at higher than desired operating frequency. We describe a method for estimating both acoustic velocity and attenuation through transmission coefficient (TC) measurements of a thin layer. This method was used for characterizing a silicon-epoxy 2-2 composite layer around the quarter wavelength frequency range. The magnitude of TC for the composite agreed with prediction for a homogeneous material in the frequency range of interest. However, the measured phase showed a discontinuity (phase jump about 90/spl deg/) near the quarter shear wave resonance for the epoxy.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
