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On the contemporary SINTAP approach and its application to the evaluation of the serviceability of welded joints of steam pipelines of thermal power plants

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Abstract

The SINTAP approach is used for the evaluation of the serviceability of a welded joint after ∼19·104 h of its operation in the steam pipeline of a thermal power plant. The characteristics of strength and crack resistance required for calculations are determined on specimens cut out from the corresponding zones of the investigated welded joint. It is assumed that the welded joint is loaded by a uniform tensile stress, that residual stresses are also present in the metal of the weld, and that a semielliptic crack propagates in the base metal and the metal of the weld from the external surface of the pipeline. The theoretically established parameters of the critical state of a pipe element with welded joint are in good agreement with the expert conclusions concerning the causes of failure of the pipeline.

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Authors and Affiliations

  1. Politechnika Świętokrzyska, Kielce

    I. R. Dzioba

  2. Karpenko Physicomechanical Institute, Ukrainian Academy of Sciences, Lviv

    O. Z. Student & A. D. Markov

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  1. I. R. Dzioba
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  2. O. Z. Student
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  3. A. D. Markov
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Translated from Fizyko-Khimichna Mekhanika Materialiv, Vol. 41, No. 6, pp. 70–79, November–December, 2005.

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Dzioba, I.R., Student, O.Z. & Markov, A.D. On the contemporary SINTAP approach and its application to the evaluation of the serviceability of welded joints of steam pipelines of thermal power plants. Mater Sci 41, 791–804 (2005). https://doi.org/10.1007/s11003-006-0046-0

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