Effect of miniature channel shaped scratches on the tensile properties of flexible pipe tensile armour wires

K.K. Adewole, J.M. Race, S.J. Bull

Research output: Contribution to conferencePaper

Abstract

Flexible pipes are used for risers and flowlines in the offshore industry. Tensile armour wires provide the flexible pipe's resistance to longitudinal stresses which arise during installation and in service. BS EN ISO13628-2: 2006 recommends that the surface of the as-formed tensile armour layers should be checked for scratches. However, the standard does not regulate the acceptable scratch sizes. Consequently, there is a need to investigate the effect of scratch sizes and locations on the tensile armour wire tensile properties so as to have scientific scratch acceptance criteria. Laboratory and finite element simulations of the tensile testing of scratched tensile armour wires revealed that, the reductions in the yield load, the ultimate load and the displacement at fracture of the wires by flat bottomed scratches depend largely on the defect dimensions rather than the defect locations.
Original languageEnglish
Pages155-162
Number of pages8
Publication statusPublished - 2011
Event9th International Conference on Advances and Trends in Engineering Materials and their Applications, AES-ATEMA'2011 - Riga, Latvia
Duration: 11 Jul 201115 Jul 2011

Conference

Conference9th International Conference on Advances and Trends in Engineering Materials and their Applications, AES-ATEMA'2011
Abbreviated titleAES-ATEMA 2011
CountryLatvia
CityRiga
Period11/07/1115/07/11

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Keywords

  • FE simulation
  • flexible pipes
  • scratches
  • shear fracture model
  • tensile armour wires
  • acceptance criteria
  • defect dimensions
  • defect location
  • wire
  • finite element simulations
  • longitudinal stress
  • offshore industry
  • shear fracture
  • tensile armour layers
  • ultimate loads
  • yield load
  • armor
  • computer simulation
  • marine risers
  • tensile testing

Cite this

Adewole, K. K., Race, J. M., & Bull, S. J. (2011). Effect of miniature channel shaped scratches on the tensile properties of flexible pipe tensile armour wires. 155-162. Paper presented at 9th International Conference on Advances and Trends in Engineering Materials and their Applications, AES-ATEMA'2011, Riga, Latvia.