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Proceedings Paper

Theoretical computation of acoustic pressure generated by ultrasonic sensors in the presence of an interface
Author(s): Dominique Placko; Tribikram Kundu; Rais Ahmad
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Paper Abstract

DPSM (Distributed Point Source Method) is a computational technique that can be used to model the pressure field generated by ultrasonic acoustic transducers. This technique involves discretization of the transducer face of any geometrical shape, into a number of elemental surface areas. Point sources are placed at the centroids of the elemental surface areas. The strengths of the point sources are proportional to the surface areas. Pressure field at a given point is the cumulative effect of the pressure fields generated by all point sources. The accuracy of the computational technique depends on the sensor surface discretization. In this paper, circular transducers are modeled using the DPSM technique. This technique is applied to calculate the pressure field distribution in non- homogeneous fluids with interface. The non-homogeneous fluid is composed of two fluid half-spaced with the interface in front of the transducer face parallel or inclined to the transducer face. Pressure fields in both fluids for normal and angular incidence of the ultrasonic beam have been calculated using DPSM technique.

Paper Details

Date Published: 11 June 2002
PDF: 12 pages
Proc. SPIE 4702, Smart Nondestructive Evaluation for Health Monitoring of Structural and Biological Systems, (11 June 2002); doi: 10.1117/12.469875
Show Author Affiliations
Dominique Placko, Ecole Normale Superieure Laboratoire d'Electricite (France)
Tribikram Kundu, Univ. of Arizona (United States)
Rais Ahmad, Univ. of Arizona (United States)

Published in SPIE Proceedings Vol. 4702:
Smart Nondestructive Evaluation for Health Monitoring of Structural and Biological Systems
Tribikram Kundu, Editor(s)

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