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Study of Fatigue Strength of Copper Conductor Considering Irregularities Surfaces by Experimental Testings and FE-Analysis

[+] Author Affiliations
Fachri P. Nasution, Svein Sævik

NTNU, Trondheim, Norway

Janne K. Ø. Gjøsteen

MARINTEK, Trondheim, Norway

Paper No. OMAE2012-83350, pp. 269-275; 7 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


The objective of this work was to investigate the fatigue performance of a 95 mm2 copper conductor. The compacting procedure applied during the manufacturing process causes geometrical irregularities in the wires. Specimens from different layers have been tested in tension-tension mode with a stress-ratio, R = 0.1. The irregularities have been measured and through numerical studies applied to assess the resulting bending stresses in tension loading. When this is accounted for, the fatigue behavior of the core, the inner layer and the outer layer seems to be similar. This indicates that the difference in fatigue data observed between different layers of wires can be explained by surface irregularities. However, this needs to be supported by more data.

Copyright © 2012 by ASME



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