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An Analytical Model for Thermal Fatigue Crack Initiation and Propagation in Mixing Zones of Piping Systems

[+] Author Affiliations
Stéphanie Musi, Frédéric Beaud

EDF, Villeurbanne, France

Paper No. PVP2003-1997, pp. 111-118; 8 pages
  • ASME 2003 Pressure Vessels and Piping Conference
  • Fatigue, Fracture, and Damage Analysis
  • Cleveland, Ohio, USA, July 20–24, 2003
  • Conference Sponsors: Pressure Vessels and Piping Division
  • ISBN: 0-7918-4152-9
  • Copyright © 2003 by ASME


Nuclear power plants piping systems necessarily include connections of branches conveying fluids at different temperatures. Thermal-hydraulic fluctuations arising from the turbulent mixing of the flows possibly affect the inner wall of the pipes and lead to fatigue damage. This paper aims at presenting an analytical model for the mixing zone thermal-mechanical problem and consecutive crack initiation and propagation analyses.

Copyright © 2003 by ASME



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