Method for resonant measurement
Abstract
A method of measurement of objects to determine object flaws, Poisson's ratio (.sigma.) and shear modulus (.mu.) is shown and described. First, the frequency for expected degenerate responses is determined for one or more input frequencies and then splitting of degenerate resonant modes are observed to identify the presence of flaws in the object. Poisson's ratio and the shear modulus can be determined by identification of resonances dependent only on the shear modulus, and then using that shear modulus to find Poisson's ratio using other modes dependent on both the shear modulus and Poisson's ratio.
- Inventors:
-
- 5201 Rio Grande Blvd., N.W., Albuquerque, NM 87107
- Rte. 4, Box 258 Tano Rd., Sante Fe, NM 87501
- 396 Connie Ave., White Rock, NM 87544
- Issue Date:
- Research Org.:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- OSTI Identifier:
- 870324
- Patent Number(s):
- 5495763
- Assignee:
- Rhodes, George W. (5201 Rio Grande Blvd., N.W., Albuquerque, NM 87107);Migliori, Albert (Rte. 4, Box 258 Tano Rd., Sante Fe, NM 87501);Dixon, Raymond D. (396 Connie Ave., White Rock, NM 87544)
- Patent Classifications (CPCs):
-
G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- DOE Contract Number:
- W-7405-ENG-36
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- method; resonant; measurement; determine; flaws; poisson; ratio; sigma; shear; modulus; shown; described; frequency; expected; degenerate; responses; determined; input; frequencies; splitting; modes; observed; identify; presence; identification; resonances; dependent; shear modulus; resonant mode; /73/
Citation Formats
Rhodes, George W, Migliori, Albert, and Dixon, Raymond D. Method for resonant measurement. United States: N. p., 1996.
Web.
Rhodes, George W, Migliori, Albert, & Dixon, Raymond D. Method for resonant measurement. United States.
Rhodes, George W, Migliori, Albert, and Dixon, Raymond D. Mon .
"Method for resonant measurement". United States. https://www.osti.gov/servlets/purl/870324.
@article{osti_870324,
title = {Method for resonant measurement},
author = {Rhodes, George W and Migliori, Albert and Dixon, Raymond D},
abstractNote = {A method of measurement of objects to determine object flaws, Poisson's ratio (.sigma.) and shear modulus (.mu.) is shown and described. First, the frequency for expected degenerate responses is determined for one or more input frequencies and then splitting of degenerate resonant modes are observed to identify the presence of flaws in the object. Poisson's ratio and the shear modulus can be determined by identification of resonances dependent only on the shear modulus, and then using that shear modulus to find Poisson's ratio using other modes dependent on both the shear modulus and Poisson's ratio.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Jan 01 00:00:00 EST 1996},
month = {Mon Jan 01 00:00:00 EST 1996}
}
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Works referenced in this record:
On the normal modes of free vibration of inhomogeneous and anisotropic elastic objects
journal, October 1991
- Visscher, William M.; Migliori, Albert; Bell, Thomas M.
- The Journal of the Acoustical Society of America, Vol. 90, Issue 4