Comparison of the Experimental and Theoretical Pressure Fields in the Nearfield of Ultrasonic Transducer-Lens Systems
Abstract
Experimental measurements of acoustic pressure fields near the focal points of ultrasonic transducer-lens systems are compared to calculations of a recently developed analytic technique. This method incorporates the Fresnel approximation to expand the field in terms of Gaussian-Laguerre functions to calculate the acoustic field for arbitrary placement of a lens in the nearfield of a circular transducer. The predicted field pattern symmetries near the focal region with a lens located either at one focal distance or at the transducer face are confirmed by experimental measurements made with a microsphere probe.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1980
- Accession Number
- ADA100178
Entities
People
- Bill D. Cook
- Henry D. Dardy
- P. L. Edwards
Organizations
- University of West Florida