Abstract
An annular surface wave transducer is a device where ingoing and outgoing radial surface waves, launched from concentric circular elec- trodes on the surface of a piezoelectric material, radiate acoustic energy into a liquid. The device has been used as a transducer for acoustic micro- copy, which uses the property that energy radiated into the liquid creates a focal spot on the device's symmetry axis. It is the energy radiated beyond this focal spot which is of interest in this paper. Analytical and experimental results showing the radiation pattern beyond the focal spot, and the effects of off-axis radiation on various imaging receivers will be discussed, with primary emphasis on axial energy variations in both intensity and beam width. Results from observing the device's unloaded surface with a laser imaging system will be given, and finally, the receiving characteristics of the annular surface wave transducer will be compared to a typical thickness transducer.
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.
