Properties of Materials Using Acoustic Waves.
Abstract
Our goal of characterizing materials using acoustic waves was forwarded through a number of projects: 1) We have derived a theory, and tested it on tissues, for predicting the composition of composite materials using mixture rules, such as the one we derived for the nonlinear parameter two years ago; 2) We have published one article and another is in review on our use of modulated acoustic radiation pressure on levitated drops to characterize interfaces with and without surfactants. We have begun to study in a systematic way the nonlinear dynamics of drops, including drop fission: 3) we have improved apparatus for 30 MHz ultrasonic scattering from microparticles (approx. micron size), which should allow us to discriminate between different microparticles in a liquid; 4) We have begun to study the nonlinear mechanics of hydrodynamic solitons in cylindrical (2-d) geometry; and 5) We have been studying the use of acoustic levitation for transducer calibration. Keywords: nonlinear parameter; radiation pressure; levitation.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1985
- Accession Number
- ADA161629
Entities
People
- R. E. Apfel
Organizations
- Yale University