Crack detection using resonant ultrasound spectroscopy
Abstract
Method and apparatus are provided for detecting crack-like flaws in components. A plurality of exciting frequencies are generated and applied to a component in a dry condition to obtain a first ultrasonic spectrum of the component. The component is then wet with a selected liquid to penetrate any crack-like flaws in the component. The plurality of exciting frequencies are again applied to the component and a second ultrasonic spectrum of the component is obtained. The wet and dry ultrasonic spectra are then analyzed to determine the second harmonic components in each of the ultrasonic resonance spectra and the second harmonic components are compared to ascertain the presence of crack-like flaws in the component. 5 figs.
- Inventors:
- Issue Date:
- OSTI Identifier:
- 7174895
- Patent Number(s):
- 5351543
- Application Number:
- PPN: US 7-813651
- Assignee:
- Univ. of California, Office of Technology Transfer, Alameda, CA (United States)
- DOE Contract Number:
- W-7405-ENG-36
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 27 Dec 1991
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 42 ENGINEERING; CRACKS; DETECTION; ULTRASONIC TESTING; COMPARATIVE EVALUATIONS; SPECTROSCOPY; ACOUSTIC TESTING; EVALUATION; MATERIALS TESTING; NONDESTRUCTIVE TESTING; TESTING; 420500* - Engineering- Materials Testing
Citation Formats
Migliori, A, Bell, T M, and Rhodes, G W. Crack detection using resonant ultrasound spectroscopy. United States: N. p., 1994.
Web.
Migliori, A, Bell, T M, & Rhodes, G W. Crack detection using resonant ultrasound spectroscopy. United States.
Migliori, A, Bell, T M, and Rhodes, G W. Tue .
"Crack detection using resonant ultrasound spectroscopy". United States.
@article{osti_7174895,
title = {Crack detection using resonant ultrasound spectroscopy},
author = {Migliori, A and Bell, T M and Rhodes, G W},
abstractNote = {Method and apparatus are provided for detecting crack-like flaws in components. A plurality of exciting frequencies are generated and applied to a component in a dry condition to obtain a first ultrasonic spectrum of the component. The component is then wet with a selected liquid to penetrate any crack-like flaws in the component. The plurality of exciting frequencies are again applied to the component and a second ultrasonic spectrum of the component is obtained. The wet and dry ultrasonic spectra are then analyzed to determine the second harmonic components in each of the ultrasonic resonance spectra and the second harmonic components are compared to ascertain the presence of crack-like flaws in the component. 5 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Oct 04 00:00:00 EDT 1994},
month = {Tue Oct 04 00:00:00 EDT 1994}
}
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