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Numerical Interpretation of the Endurance Test on FATHER Mixing Zone Mock-Up

[+] Author Affiliations
Jean-Michel Stephan

EDF R&D MMC, Moret-sur-Loing, France

Paper No. PVP2011-57537, pp. 585-592; 8 pages
  • ASME 2011 Pressure Vessels and Piping Conference
  • Volume 3: Design and Analysis
  • Baltimore, Maryland, USA, July 17–21, 2011
  • Conference Sponsors: Pressure Vessels and Piping Division
  • ISBN: 978-0-7918-4453-3
  • Copyright © 2011 by ASME


For a better understanding of thermal fatigue in piping mixing zone, EDF, CEA and AREVA ANP have developed a mock-up named FATHER. Tests performed on the mock-up have given access to fluid temperature thermal fluctuations and external surface strains. Tests were completed by an endurance test. Examinations revealed the presence of numerous cracks at different locations. EDF R&D has performed a numerical interpretation of the test, in relation with different specimen fatigue tests (HCF tests on polished specimens, influence of surface roughness, influence of mean stress,[[ellipsis]]) and with the use of different fatigue criteria (RCC-M, Fatemi-Socie, Dang Van[[ellipsis]]). Numerical results are compared with the results of examinations. A comparison is done with results obtained by codified methodologies for nuclear plants.

Copyright © 2011 by ASME



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