Crack detection using resonant ultrasound spectroscopy

Patent · Sat Jan 01 00:00:00 EST 1994

OSTI ID:869523

Migliori, Albert ^[1]; Bell, Thomas M ^[1]; Rhodes, George W ^[2]

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1. Santa Fe, NM
2. Albuquerque, NM

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.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
• DOE Contract Number: W-7405-ENG-36
• Assignee: Regents of University of California, Office of Technology (Alameda, CA)
• Patent Number(s): US 5351543
• OSTI ID: 869523
• Country of Publication: United States
• Language: English

Related Subjects

crack
detection
resonant
ultrasound
spectroscopy
method
apparatus
provided
detecting
crack-like
flaws
components
plurality
exciting
frequencies
generated
applied
component
dry
condition
obtain
ultrasonic
spectrum
wet
selected
liquid
penetrate
obtained
spectra
analyzed
determine
harmonic
resonance
compared
ascertain
presence
resonant ultrasound
spectroscopy method
resonance spectra
ultrasonic resonance
ultrasound spectroscopy
dry condition
crack detection
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