Abstract

In order to facilitate the acquisition and accurate interpretation of intensity and energy density data in high-amplitude pressure fields, the expressions for intensity and energy density are examined to ascertain the impact of nonlinear processes on the standard expressions. Measurement techniques for estimating acoustic particle velocity are presented. The finite-difference method is developed in an alternate manner and presented along with bias and confidence estimates. Additionally, two new methods for estimating the local particle velocity are presented. These methods appears to eliminate the errors and bias associated with the finite-difference technique for certain cases.

Degree

MS

College and Department

Physical and Mathematical Sciences; Physics and Astronomy

Rights

http://lib.byu.edu/about/copyright/

Date Submitted

2008-07-17

Document Type

Thesis

Handle

http://hdl.lib.byu.edu/1877/etd2560

Keywords

acoustics, intensity, energy density, nonlinear acoustics

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