Means and method for nonuniform poling of piezoelectric transducers
Abstract
An apparatus and method for nonuniform poling of piezoelectric transducers includes machining one or more indentation into an end of a piezoelectric rod and cutting the rod to present a thickened disk shape. Highly electrically conductive material is deposited on at least the indentations in the one end and on at least portions of the opposite face of the member. One or more electrodes are configured to matingly fit within the indentations on the one face of the disk, with a like number of electrodes being positionable on the opposite face of the material. Electrical power is then applied to the electrodes in desired amounts, polarity, and duration. The indentations vary the electrical field produced within the piezoelectric material to produce nonuniform poling in the material. The thick disk is then cut to remove the indentations and to present a thin, flat two sided disk for installation in a conventional piezoelectric transducer probe. The indentations are selected to produce poling in accordance with desired transducer response profiles such as Gaussian or Bessel functions.
- Inventors:
-
- Ames, IA
- Issue Date:
- Research Org.:
- Ames Laboratory (AMES), Ames, IA; Iowa State Univ., Ames, IA (United States)
- OSTI Identifier:
- 867548
- Patent Number(s):
- 4961252
- Application Number:
- 07/447,831
- Assignee:
- Iowa State University Research Foundation, Inc. (Ames, IA)
- Patent Classifications (CPCs):
-
G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- DOE Contract Number:
- W-7405-ENG-82
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- means; method; nonuniform; poling; piezoelectric; transducers; apparatus; machining; indentation; rod; cutting; thickened; disk; shape; highly; electrically; conductive; material; deposited; indentations; portions; opposite; electrodes; configured; matingly; fit; positionable; electrical; power; applied; desired; amounts; polarity; duration; vary; field; produced; produce; thick; cut; remove; flat; sided; installation; conventional; transducer; probe; selected; accordance; response; profiles; gaussian; bessel; functions; electrical field; field produced; electrical power; conductive material; electrically conductive; piezoelectric transducer; piezoelectric material; nonuniform poling; desired amount; piezoelectric transducers; desired amounts; highly electrically; /29/264/310/
Citation Formats
Hsu, David K, Margetan, Frank J, Hasselbusch, Michael D, Wormley, Samuel J, Hughes, Michael S, and Thompson, Donald O. Means and method for nonuniform poling of piezoelectric transducers. United States: N. p., 1990.
Web.
Hsu, David K, Margetan, Frank J, Hasselbusch, Michael D, Wormley, Samuel J, Hughes, Michael S, & Thompson, Donald O. Means and method for nonuniform poling of piezoelectric transducers. United States.
Hsu, David K, Margetan, Frank J, Hasselbusch, Michael D, Wormley, Samuel J, Hughes, Michael S, and Thompson, Donald O. Tue .
"Means and method for nonuniform poling of piezoelectric transducers". United States. https://www.osti.gov/servlets/purl/867548.
@article{osti_867548,
title = {Means and method for nonuniform poling of piezoelectric transducers},
author = {Hsu, David K and Margetan, Frank J and Hasselbusch, Michael D and Wormley, Samuel J and Hughes, Michael S and Thompson, Donald O},
abstractNote = {An apparatus and method for nonuniform poling of piezoelectric transducers includes machining one or more indentation into an end of a piezoelectric rod and cutting the rod to present a thickened disk shape. Highly electrically conductive material is deposited on at least the indentations in the one end and on at least portions of the opposite face of the member. One or more electrodes are configured to matingly fit within the indentations on the one face of the disk, with a like number of electrodes being positionable on the opposite face of the material. Electrical power is then applied to the electrodes in desired amounts, polarity, and duration. The indentations vary the electrical field produced within the piezoelectric material to produce nonuniform poling in the material. The thick disk is then cut to remove the indentations and to present a thin, flat two sided disk for installation in a conventional piezoelectric transducer probe. The indentations are selected to produce poling in accordance with desired transducer response profiles such as Gaussian or Bessel functions.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Oct 09 00:00:00 EDT 1990},
month = {Tue Oct 09 00:00:00 EDT 1990}
}