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In-Situ Simultaneous Measurement of Thickness, Elastic Moduli and Density of Thermal Sprayed WC-Co Coatings by Laser-Ultrasonics

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A method for simultaneous nondestructive evaluation of WC-Co coating thickness, elastic moduli, and density is presented. The technique, known as laser-ultrasonics, is used to generate and detect surface acoustic waves in a noncontact and nondestructive manner. The surface acoustic wave velocity dependence on frequency is compared to a model and an optimization procedure is used to evaluate the coating properties. The results obtained demonstrate the ability of the technique to simultaneously determine such properties with a single and possibly in situ measurement.

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Acknowledgments

The authors are grateful to Adam Gilbert and Martin Lord for the experimental help in the laser-ultrasonic measurements.

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Authors and Affiliations

  1. Industrial Materials Institute, National Research Council of Canada, 75 de Mortagne Blvd, Boucherville, QC, Canada, J4B 6Y4

    C. Bescond, S. E. Kruger, D. Lévesque, R. S. Lima & B. R. Marple

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  1. C. Bescond
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  2. S. E. Kruger
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  3. D. Lévesque
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  4. R. S. Lima
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  5. B. R. Marple
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Correspondence to S. E. Kruger.

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Bescond, C., Kruger, S.E., Lévesque, D. et al. In-Situ Simultaneous Measurement of Thickness, Elastic Moduli and Density of Thermal Sprayed WC-Co Coatings by Laser-Ultrasonics. J Therm Spray Tech 16, 238–244 (2007). https://doi.org/10.1007/s11666-007-9025-8

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  • DOI: https://doi.org/10.1007/s11666-007-9025-8

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