Recently, a focused ultrasound radiation force excitation technique has been explored for modal excitation. However, in order to use it as a practical method for experimental modal analysis, the capability of quantifying the force input is needed. This paper describes the numerical
simulation of ultrasound pressure mapping generated from focused ultrasound transducers using Rayleigh Integral and boundary element method as well as the estimation of the resulting focused radiation force based on the ultrasound radiation force theory and double sideband suppressed carrier
amplitude modulation (DSB-SC AM) signal. Vibration velocity of the sound emitting surface of ultrasound transducers was measured using three dimensional (3D) Scanning Laser Doppler Vibrometer (SLDV) and used as the input in the acoustic simulation. The numerical results are experimentally
verified by acoustic measurement using precision acoustic microphones. Comparisons show that the simulation results agree well with that of the experiment. The ultrasound pressure is found to be in the level of 1000 Pa and the pressure field is found to be highly focused and has a spot size
of ~ Φ3 mm, making it possible to be used as non-contact excitation for modal analysis.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Article Media
Document Type: Research Article
University of Massachusetts Lowell
Publication date: December 18, 2018
More about this publication?
The INTER-NOISE and NOISE-CON congress and conference proceedings is a collection of the presented papers. The papers are not peer reviewed and usually represent a synopsis of the material presented at the congress or conference.
- Membership Information
- INCE Subject Classification
- Ingenta Connect is not responsible for the content or availability of external websites