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Related Experiment Video

Updated: Jul 7, 2026

Scattering And Absorption of Light in Planetary Regoliths

Scattering And Absorption of Light in Planetary Regoliths

Published on: July 1, 2019

Evaluation of asteroidal transducers.

E K Balcer-Kubiczek¹, G H Harrison

¹Dept. of Radiat. Oncology, Maryland Univ., Sch. of Med., Baltimore, MD.

IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control

|January 1, 1988

Summary

This summary is machine-generated.

New calculations accurately predict ultrasonic intensity distributions from shaded transducers, matching experimental results. This research details how shading and distance affect sound beam patterns for better ultrasonic applications.

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Area of Science:

Acoustics
Materials Science
Engineering

Background:

Understanding ultrasonic wave propagation is crucial for medical imaging and industrial applications.
Radially shaded transducers offer potential for improved ultrasonic beam control.

Purpose of the Study:

To calculate ultrasonic intensity distributions for uniformly excited asteroidal sources.
To emulate radially shaded transducers and validate calculations with experimental data.

Main Methods:

Utilized improved calculation methods for ultrasonic intensity distributions.
Employed uniformly excited asteroidal sources to model radially shaded transducers.
Conducted experiments using lead metaniobate transducers in water for validation.

Main Results:

Achieved good agreement between improved calculations and experimental results.
Demonstrated the dependence of transverse intensity distribution asymmetries on axial distance.
Showcased the influence of the degree of shading on beam asymmetry.

Conclusions:

The improved calculation method accurately predicts ultrasonic intensity distributions.
Axial distance and transducer shading significantly impact ultrasonic beam asymmetry.
Findings support the use of shaded transducers for controlled ultrasonic field generation.