Nondestructive inspection using continuous ultrasonic wave generation
Abstract
Methods and apparatus are disclosed for analyzing structures by applying a continuous ultrasonic excitation and measuring steady state response of the structures using laser Doppler vibrometery, or other techniques. In one example, a method comprises applying a continuous signal having one or more periodic tones to the structure, generating measurements of wave response to the signal at each of a plurality of inspection points of the structure, and, for each of the periodic tones, estimating wavenumbers for a number of the inspection points of the structure based on the wave response measurements and the frequency of the periodic tones. The estimated wavenumbers can be used to determine properties of the structure, including defects, damage, or variation in thickness.
- Inventors:
- Publication Date:
- Research Org.:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1600157
- Patent Number(s):
- 10,444,202
- Application Number:
- 14/688,854
- Assignee:
- Triad National Security, LLC (Los Alamos, NM)
- DOE Contract Number:
- AC52-06NA25396
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 04/16/2015
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
Citation Formats
Flynn, Eric B., Farrar, Charles R., and Jarmer, Gregory James Sylvester. Nondestructive inspection using continuous ultrasonic wave generation. United States: N. p., 2019.
Web.
Flynn, Eric B., Farrar, Charles R., & Jarmer, Gregory James Sylvester. Nondestructive inspection using continuous ultrasonic wave generation. United States.
Flynn, Eric B., Farrar, Charles R., and Jarmer, Gregory James Sylvester. 2019.
"Nondestructive inspection using continuous ultrasonic wave generation". United States. https://www.osti.gov/servlets/purl/1600157.
@article{osti_1600157,
title = {Nondestructive inspection using continuous ultrasonic wave generation},
author = {Flynn, Eric B. and Farrar, Charles R. and Jarmer, Gregory James Sylvester},
abstractNote = {Methods and apparatus are disclosed for analyzing structures by applying a continuous ultrasonic excitation and measuring steady state response of the structures using laser Doppler vibrometery, or other techniques. In one example, a method comprises applying a continuous signal having one or more periodic tones to the structure, generating measurements of wave response to the signal at each of a plurality of inspection points of the structure, and, for each of the periodic tones, estimating wavenumbers for a number of the inspection points of the structure based on the wave response measurements and the frequency of the periodic tones. The estimated wavenumbers can be used to determine properties of the structure, including defects, damage, or variation in thickness.},
doi = {},
url = {https://www.osti.gov/biblio/1600157},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Oct 15 00:00:00 EDT 2019},
month = {Tue Oct 15 00:00:00 EDT 2019}
}
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