Analysis of flexible composites for coiled tubing applications

Kevin Cox, Marina Menshykova* (Corresponding Author), Oleksandr Menshykov, Igor Guz

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)
8 Downloads (Pure)


The present paper investigates thick-walled composite pipes subjected to simultaneous multi-axial loads common to those experienced in coiled tubing applications. The pipes were assumed to be filament wound carbon fiber-epoxy laminates with multiple layers and variable fiber orientations. MATLAB-based software was used to calculate stresses and carry out failure analyses through the thickness of the pipes when subjected to pressure, axial and bending (spooling) loads. Analyses were performed to determine if the composite tubes could achieve comparable strengths and spooling diameters as equivalent steel tube geometries.
Original languageEnglish
Article number111118
Number of pages13
JournalComposite Structures
Early online date6 Jun 2019
Publication statusPublished - 1 Oct 2019

Bibliographical note

The financial support of provided by Regionale Foskningsfond – Vestlandet (Norway) is gratefully acknowledged.


  • Fiber-reinforced composites
  • Stress and failure analysis
  • Coiled tubing


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