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Effects of Plastic Deformation on Fatigue Life of Superduplex Steel Tube Umbilical

[+] Author Affiliations
Diego F. S. Burgos, Luís F. S. Parise, Rafael G. Savioli, Claudio Ruggieri

University of São Paulo, São Paulo, SP, Brazil

Gustavo H. B. Donato

FEI University Center, S. B. Campo, SP, Brazil

Antonio P. Nascimento Filho

Surflex Umbilicais e Tubos Flexíveis do Brasil Ltda, Vila Velha, ES, Brazil

Carlos A. Lemos, Neilon Silva

Petrobras Research Center - CENPES, Rio de Janeiro, RJ, Brazil

Paper No. OMAE2012-83204, pp. 169-176; 8 pages
  • ASME 2012 31st International Conference on Ocean, Offshore and Arctic Engineering
  • Volume 3: Pipeline and Riser Technology
  • Rio de Janeiro, Brazil, July 1–6, 2012
  • Conference Sponsors: Ocean, Offshore and Arctic Engineering Division
  • ISBN: 978-0-7918-4490-8
  • Copyright © 2012 by ASME


This work presents an experimental investigation of the effects of plastic strain on the fatigue behavior of superduplex steel tubes. Fatigue tests using conventional axial loading and a resonant bending setup conducted on 15mm OD tubes made of SAF2507 superduplex steel provides S × N data upon which effects of different levels of plastic strain can be assessed. Despite the inherent scatter in the measured fatigue data, the experiments reveal consistent trends and relatively small effects of plastic strain on fatigue behavior of superduplex steel tubes.

Copyright © 2012 by ASME



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