Browsing by Author "Palash, Roman"

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    Method for calculating the operating life of a steam pipe with a creep-fatigue crack near a weld joint
    (Lviv Politechnic Publishing House, 2018-01-29) Dolinska, Iryna; Palash, Roman; Karpenko Physico-Mechanical Institute of the NAS of Ukraine; Lviv Polytechnic National University
    A method for determining the period of sub-critical growth of a semielliptical creep-fatigue crack in the internal surface of a pipe wall of the steam pipeline is proposed. The crack is located near the ring weld in the field of residual stresses in the heat-affected zone. The dependence of the residual resource of the pipe of a steam pipeline with the weld joint on the location of the centre of the crack relative to the axis of the weld is ascertained.