Apparatus and method for measuring the thickness of a coating
Patent
·
OSTI ID:874311
- Idaho Falls, ID
An apparatus and method for measuring the thickness of a coating adhered to a substrate. An electromagnetic acoustic transducer is used to induce surface waves into the coating. The surface waves have a selected frequency and a fixed wavelength. Interpolation is used to determine the frequency of surface waves that propagate through the coating with the least attenuation. The phase velocity of the surface waves having this frequency is then calculated. The phase velocity is compared to known phase velocity/thickness tables to determine the thickness of the coating.
- Research Organization:
- Idaho National Laboratory (INL), Idaho Falls, ID (United States)
- DOE Contract Number:
- AC07-94ID13223
- Assignee:
- Bechtel BWXT Idaho LLC (Idaho Falls, ID)
- Patent Number(s):
- US 6363787
- OSTI ID:
- 874311
- Country of Publication:
- United States
- Language:
- English
Opto-Acoustical Inspection of Surface Layers
|
journal | May 1990 |
Laser generation and detection of surface acoustic waves: Elastic properties of surface layers
|
journal | January 1992 |
Application of ultrasonic Rayleigh waves to thickness measurement of metallic coatings
|
journal | January 1995 |
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