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Ultrasonic estimation of the residual stresses

  • Mechanics of Materials: Strength, Service Life, Safety
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Inorganic Materials Aims and scope

Abstract

A method for estimating the residual stresses in the weld joint material is described. The results of acoustic examination of the samples made from structural plate steels 15, 20, 08ps, 15G2SF, and 09G2S are presented. A linear relationship between the Poisson ratios of the studied orthotropic materials is found when no residual mechanical stresses are present. Using the example of a weld joint of a pipe element made from steel 15G2SF, it is shown that the linear relationship between the Poisson ratios is violated in the presence of residual stresses. An algorithm for monitoring the residual mechanical stresses in the depressed-zero acoustic tensometry regime based on the deviation of the Poisson ratio of the material from the linear relationship is proposed. The results of measurements of the principal stress difference in a weld joint of a pipe made from steel 09G2S are detailed.

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Authors and Affiliations

  1. Institute for Problems in Mechanical Engineering, Russian Academy of Sciences, Nizhni Novgorod, 603024, Russia

    K. V. Kurashkin & V. V. Mishakin

Authors
  1. K. V. Kurashkin
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  2. V. V. Mishakin
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Correspondence to K. V. Kurashkin.

Additional information

Original Russian Text © K.V. Kurashkin, V.V. Mishakin, 2013, published in Zavodskaya Laboratoriya. Diagnostika Materialov, 2013, Vol. 79, No. 4, pp. 54–58.

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Kurashkin, K.V., Mishakin, V.V. Ultrasonic estimation of the residual stresses. Inorg Mater 50, 1506–1510 (2014). https://doi.org/10.1134/S0020168514150060

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  • DOI: https://doi.org/10.1134/S0020168514150060

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