Measurements of harmonic profiles of a bounded ultrasonic beam in a liquid medium |
| |
Authors: | DD McLennan TDK Ngoc WG Mayer |
| |
Institution: | 1. Physics Department, Georgetown University, Washington DC20057, USA |
| |
Abstract: | The acoustic field of a bounded finite-amplitude beam is governed by competing mechanisms such as medium non-linearity, interference, and attenuation. An analytic determination of the distribution of sonic energy in the individual harmonic components is often not reliable; consequently an experimental mapping of those harmonic components may be more appropriate. An experimental method is presented here which involves a miniature hydrophone probe which has been frequency calibrated for each harmonic component using a light diffraction technique. Measurements (made across the sound field) of the acoustic amplitude of the first three harmonic components are presented. |
| |
Keywords: | ultrasonics transducer calibration hydrophones |
本文献已被 ScienceDirect 等数据库收录! |