Generalized Equation of the Opening of a Through-Thickness Ring Crack in a Clad Thick-Wall Pipeline


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Resumo

Based on numerical-analytical analysis of a straight pipeline section produced of pearlitic steel clad by buttering of austenitic steel, a crack opening was investigated. These steels have different line expansion coefficients. The generalized equation of an opening of a through-thickness ring crack in a thick-wall clad pipeline was obtained taking into account the internal pressure and thermal stresses. The need to take into account the thermal stresses in the evaluation of an opening of a through-thickness ring crack in the clad pipeline was shown. The investigation results can be used effectively when the foundation of the “leak before break” concept in pipeline transport.

Sobre autores

Yu. Matvienko

Mechanical Engineering Research Institute

Email: Kuzmin_DA@yahoo.com
Rússia, Moscow

D. Kuz’min

All-Russia Research Institute for Nuclear Power Plants Operation (OJSC VNIIAES)

Autor responsável pela correspondência
Email: Kuzmin_DA@yahoo.com
Rússia, Moscow, 109507

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