Noninvasive field measurement of low-frequency ultrasonic transducers operating in sealed vessels

G. Harvey, A. Gachagan

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

This paper describes a noninvasive technique utilizing the acousto-optic effect, laser interferometry, and tomographic principles that have been implemented to measure the acoustic fields generated by low-frequency ultrasonic transducers operating into sealed, water-loaded vessels commonly used in industrial processing applications. A customized scanning frame, incorporating both linear and rotational stages, has been developed to facilitate manipulation of the laser head and vessel under evaluation. First, transmitted pressure profiles in air are predicted from surface displacement data acquired directly by laser measurement of the vibrating aperture. These profiles were then used to verify the measured fields obtained via conventional tomographic scanning procedures, coupled with laser interferometry, applied within a draft-proof scanning facility under free-field conditions. Next, the finite element code PZFlex was employed for the prediction of pressure fields within cylindrical cell configurations. Finally, precise manipulation of the laser firing angle and position was implemented in order to compensate for the effects of refraction at the cell wall boundaries, and to re-establish the projections required for the reconstruction algorithm. The experimental results demonstrate good corroboration with the PZFlex predictions, validating its application of ultrasound as a virtual prototyping tool for the design of high power ultrasonic test vessels.
LanguageEnglish
Pages1749-1758
Number of pages9
JournalIEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control
Volume53
Issue number10
DOIs
Publication statusPublished - 2006

Fingerprint

Ultrasonic transducers
Laser interferometry
vessels
laser interferometry
transducers
ultrasonics
low frequencies
Scanning
scanning
Lasers
manipulators
ultrasonic tests
Ultrasonics
lasers
draft
Acoustic fields
acousto-optics
profiles
predictions
Refraction

Keywords

  • ultrasonics
  • lasers
  • optics
  • acoustics

Cite this

@article{31b33500928f4e3f8c88bd39e992f188,
title = "Noninvasive field measurement of low-frequency ultrasonic transducers operating in sealed vessels",
abstract = "This paper describes a noninvasive technique utilizing the acousto-optic effect, laser interferometry, and tomographic principles that have been implemented to measure the acoustic fields generated by low-frequency ultrasonic transducers operating into sealed, water-loaded vessels commonly used in industrial processing applications. A customized scanning frame, incorporating both linear and rotational stages, has been developed to facilitate manipulation of the laser head and vessel under evaluation. First, transmitted pressure profiles in air are predicted from surface displacement data acquired directly by laser measurement of the vibrating aperture. These profiles were then used to verify the measured fields obtained via conventional tomographic scanning procedures, coupled with laser interferometry, applied within a draft-proof scanning facility under free-field conditions. Next, the finite element code PZFlex was employed for the prediction of pressure fields within cylindrical cell configurations. Finally, precise manipulation of the laser firing angle and position was implemented in order to compensate for the effects of refraction at the cell wall boundaries, and to re-establish the projections required for the reconstruction algorithm. The experimental results demonstrate good corroboration with the PZFlex predictions, validating its application of ultrasound as a virtual prototyping tool for the design of high power ultrasonic test vessels.",
keywords = "ultrasonics, lasers, optics, acoustics",
author = "G. Harvey and A. Gachagan",
year = "2006",
doi = "10.1109/TUFFC.2006.108",
language = "English",
volume = "53",
pages = "1749--1758",
journal = "IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control",
issn = "0885-3010",
number = "10",

}

TY - JOUR

T1 - Noninvasive field measurement of low-frequency ultrasonic transducers operating in sealed vessels

AU - Harvey, G.

AU - Gachagan, A.

PY - 2006

Y1 - 2006

N2 - This paper describes a noninvasive technique utilizing the acousto-optic effect, laser interferometry, and tomographic principles that have been implemented to measure the acoustic fields generated by low-frequency ultrasonic transducers operating into sealed, water-loaded vessels commonly used in industrial processing applications. A customized scanning frame, incorporating both linear and rotational stages, has been developed to facilitate manipulation of the laser head and vessel under evaluation. First, transmitted pressure profiles in air are predicted from surface displacement data acquired directly by laser measurement of the vibrating aperture. These profiles were then used to verify the measured fields obtained via conventional tomographic scanning procedures, coupled with laser interferometry, applied within a draft-proof scanning facility under free-field conditions. Next, the finite element code PZFlex was employed for the prediction of pressure fields within cylindrical cell configurations. Finally, precise manipulation of the laser firing angle and position was implemented in order to compensate for the effects of refraction at the cell wall boundaries, and to re-establish the projections required for the reconstruction algorithm. The experimental results demonstrate good corroboration with the PZFlex predictions, validating its application of ultrasound as a virtual prototyping tool for the design of high power ultrasonic test vessels.

AB - This paper describes a noninvasive technique utilizing the acousto-optic effect, laser interferometry, and tomographic principles that have been implemented to measure the acoustic fields generated by low-frequency ultrasonic transducers operating into sealed, water-loaded vessels commonly used in industrial processing applications. A customized scanning frame, incorporating both linear and rotational stages, has been developed to facilitate manipulation of the laser head and vessel under evaluation. First, transmitted pressure profiles in air are predicted from surface displacement data acquired directly by laser measurement of the vibrating aperture. These profiles were then used to verify the measured fields obtained via conventional tomographic scanning procedures, coupled with laser interferometry, applied within a draft-proof scanning facility under free-field conditions. Next, the finite element code PZFlex was employed for the prediction of pressure fields within cylindrical cell configurations. Finally, precise manipulation of the laser firing angle and position was implemented in order to compensate for the effects of refraction at the cell wall boundaries, and to re-establish the projections required for the reconstruction algorithm. The experimental results demonstrate good corroboration with the PZFlex predictions, validating its application of ultrasound as a virtual prototyping tool for the design of high power ultrasonic test vessels.

KW - ultrasonics

KW - lasers

KW - optics

KW - acoustics

UR - http://ieeexplore.ieee.org/iel5/58/4012773/04012860.pdf?tp=&isnumber=4012773&arnumber=4012860&punumber=58

UR - http://dx.doi.org/10.1109/TUFFC.2006.108

U2 - 10.1109/TUFFC.2006.108

DO - 10.1109/TUFFC.2006.108

M3 - Article

VL - 53

SP - 1749

EP - 1758

JO - IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control

T2 - IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control

JF - IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control

SN - 0885-3010

IS - 10

ER -