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Title: Resonant nonlinear ultrasound spectroscopy

Abstract

Components with defects are identified from the response to strains applied at acoustic and ultrasound frequencies. The relative resonance frequency shift .vertline..DELTA..function./.function..sub.0.vertline., is determined as a function of applied strain amplitude for an acceptable component, where .function..sub.0 is the frequency of the resonance peak at the lowest amplitude of applied strain and .DELTA..function. is the frequency shift of the resonance peak of a selected mode to determine a reference relationship. Then, the relative resonance frequency shift .vertline..DELTA..function./.function..sub.0 is determined as a function of applied strain for a component under test, where fo .function..sub.0 the frequency of the resonance peak at the lowest amplitude of applied strain and .DELTA..function. is the frequency shift of the resonance peak to determine a quality test relationship. The reference relationship is compared with the quality test relationship to determine the presence of defects in the component under test.

Inventors:
 [1];  [2];  [3];  [4]
+ Show Inventor Affiliations
  1. Santa Fe, NM
  2. Los Alamos, NM
  3. Amherst, MA
  4. (Sint-Niklaas, BE)
Issue Date:
Research Org.:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
OSTI Identifier:
874168
Patent Number(s):
6330827
Assignee:
The Regents of the University of California (Los Alamos, NM)
Patent Classifications (CPCs):
G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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DOE Contract Number:  
W-7405-ENG-36
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
resonant; nonlinear; ultrasound; spectroscopy; components; defects; identified; response; strains; applied; acoustic; frequencies; resonance; frequency; shift; vertlinedeltafunctionfunctionsub0vertline; determined; function; strain; amplitude; acceptable; component; functionsub0; peak; lowest; deltafunction; selected; mode; determine; reference; relationship; vertlinedeltafunctionfunctionsub0; quality; compared; presence; resonance frequency; frequency shift; ultrasound spectroscopy; /73/

Citation Formats

Johnson, Paul A, TenCate, James A, Guyer, Robert A, and Van Den Abeele, Koen E. A. Resonant nonlinear ultrasound spectroscopy. United States: N. p., 2001. Web.
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Johnson, Paul A, TenCate, James A, Guyer, Robert A, & Van Den Abeele, Koen E. A. Resonant nonlinear ultrasound spectroscopy. United States.
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Johnson, Paul A, TenCate, James A, Guyer, Robert A, and Van Den Abeele, Koen E. A. Mon . "Resonant nonlinear ultrasound spectroscopy". United States. https://www.osti.gov/servlets/purl/874168.
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@article{osti_874168,
title = {Resonant nonlinear ultrasound spectroscopy},
author = {Johnson, Paul A and TenCate, James A and Guyer, Robert A and Van Den Abeele, Koen E. A.},
abstractNote = {Components with defects are identified from the response to strains applied at acoustic and ultrasound frequencies. The relative resonance frequency shift .vertline..DELTA..function./.function..sub.0.vertline., is determined as a function of applied strain amplitude for an acceptable component, where .function..sub.0 is the frequency of the resonance peak at the lowest amplitude of applied strain and .DELTA..function. is the frequency shift of the resonance peak of a selected mode to determine a reference relationship. Then, the relative resonance frequency shift .vertline..DELTA..function./.function..sub.0 is determined as a function of applied strain for a component under test, where fo .function..sub.0 the frequency of the resonance peak at the lowest amplitude of applied strain and .DELTA..function. is the frequency shift of the resonance peak to determine a quality test relationship. The reference relationship is compared with the quality test relationship to determine the presence of defects in the component under test.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Jan 01 00:00:00 EST 2001},
month = {Mon Jan 01 00:00:00 EST 2001}
}
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Works referenced in this record:

Influence of change in physical state on elastic nonlinear response in rock: Significance of effective pressure and water saturation
journal, April 1997

  • Zinszner, Bernard; Johnson, Paul A.; Rasolofosaon, Patrick N. J.
  • Journal of Geophysical Research: Solid Earth, Vol. 102, Issue B4
  • https://doi.org/10.1029/96JB03225

Manifestation of nonlinear elasticity in rock: convincing evidence over large frequency and strain intervals from laboratory studies
journal, January 1996

Resonance and elastic nonlinear phenomena in rock
journal, May 1996

  • Johnson, Paul A.; Zinszner, Bernard; Rasolofosaon, Patrick N. J.
  • Journal of Geophysical Research: Solid Earth, Vol. 101, Issue B5
  • https://doi.org/10.1029/96JB00647
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