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Determining elasticity characteristics for protective coatings

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A method is proposed for determining the elastic modulus and Poisson's ratio for a protective coating in static uniaxial tension. The difference in Poisson's ratio between the substrate and the coating results in additional stresses, and the coating is in a planar state of stress. Formulas are derived for the coating's elasticity characteristics in terms of a single test on a coated specimen. That method has given the elastic modulus and Poisson's ratio for gas- plasma coatings.

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    B. A. Lyashenko, S. Yu. Sharivker, V. S. Veremchuk, et al., “Methods of determining the mechanical characteristics of a composite metal and protective coating,” Probl. Prochn., No. 8, 113–115 (1989).

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    L. Ya. Yaroshevskaya, B. A. Lyashenko, R. V. Tolstopyatov, and O. P. Smishchenko, “Evaluation of the compound section method for determining the elastic properties of enamel coatings,” Ibid., No. 5, 120–123 (1972).

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    C. Perry and G. Lissner, Principles of Strain-Gauge Measurement [Russian translation], Izd. Inostr. Lit., Moscow (1957).

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Translated from Problemy Prochnosti, No. 7, pp. 48–51, July, 1995.

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Dolgov, N.A., Lyashenko, B.A., Veremchuk, V.S. et al. Determining elasticity characteristics for protective coatings. Strength Mater 27, 392–394 (1995). https://doi.org/10.1007/BF02209364

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  • Elastic Modulus
  • Uniaxial Tension
  • Protective Coating
  • Single Test
  • Planar State