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Journal of Materials Science

, Volume 42, Issue 16, pp 6935–6941 | Cite as

Cyclic loading and marine environment effects on the properties of HDPE umbilical cables

  • Nelson O. Cárdenas
  • Izabel Fernanda Machado
  • Edison Gonçalves
Article

Abstract

This work presents a study of the effects of cyclic loading and marine environment on the mechanical properties of high-density polyethylene (HDPE) used in the external layer of submarine cables. Two different types of samples were tested. The first type was tested in the as-received condition whereas the second one was taken from the cyclic-loaded material. The cyclic-load test was carried out in a device, according to the API 17E standard (API 17E-98, Specification for sub sea production control umbilicas). These samples were submitted to a process of artificial aging. All the specimens were submitted to tensile test and the analysis and comparison of the results showed that HDPE suffered alterations in its mechanical behavior, especially the material submitted to cyclic loading. Both aged and as-received samples were observed by using scanning electron microscopy and their hardness was also measured. The results showed that the cyclic loading, the seawater and the ultraviolet radiations accelerated the degradation process of HDPE.

Keywords

Tensile Test Cyclic Loading Ultraviolet Radiation HDPE UHMWPE 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgements

The authors are grateful to the National Council of Scientific and Technological Development (CNPq-Brazil) for financial support and to the Center of Naval and Oceanic Structures (CENO-Brazil) of the University of São Paulo, Brazil.

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Copyright information

© Springer Science+Business Media, LLC 2007

Authors and Affiliations

  • Nelson O. Cárdenas
    • 1
  • Izabel Fernanda Machado
    • 1
  • Edison Gonçalves
    • 1
  1. 1.Department of Mechatronics and Mechanical System EngineeringPolytechnic School University of São PauloSao PauloBrazil

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