| Download | - View accepted manuscript: Laser-Ultrasonic Characterization of Thermal Spray Coatings (PDF, 715 KiB)
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| DOI | Resolve DOI: https://doi.org/10.1063/1.1711723 |
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| Author | Search for: Bescond, C.1; Search for: Lima, R. S.1; Search for: Gilbert, A.1; Search for: Kruger, S. E.1; Search for: Levesque, D.1; Search for: Marple, B. R.1 |
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| Affiliation | - National Research Council of Canada. NRC Industrial Materials Institute
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| Format | Text, Article |
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| Conference | Conference on Quantitative Nondestructive Evaluation (QNDE 2003), Green bay, WI, USA, July 27-Aug. 1, 2003, July 27-Aug. 1, 2003, Green bay, WI, USA |
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| Abstract | The laser-ultrasonic technique uses lasers to generate and detect ultrasound and present interesting possibilities for characterizing thermal spray coatings in a non-destructive manner. In this study, the thickness, density and elastic moduli of very uniform, dense and nearly isotropic TiO2 and WC-Co thermal spray coatings are evaluated by using laser generated surface Rayleigh waves and surface skimming longitudinal waves. The elastic properties of the layer are obtained via an inverse procedure based on the minimization of the difference between the measured and calculated Rayleigh wave dispersion curves. The results are compared to the values obtained with an optical microscope for the thickness and the Knoop indentation technique for the elastic modulus. The agreement between the techniques is found to be excellent and laser-ultrasonics appears to be very promising for characterizing such materials. In particular, coatings deposited at high temperature on parts of complex shape could be characterized in-situ where other methods cannot be applied. |
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| Publication date | 2004-02-26 |
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| Language | English |
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| Peer reviewed | Yes |
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| NRC number | NRCC 46801 |
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| NPARC number | 18487261 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | d02eb1d0-4095-4ec1-9ff0-e75bb92a87a9 |
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| Record created | 2011-10-11 |
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| Record modified | 2020-04-17 |
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