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Experimental and numerical study of the strengthening effects of externally bonded CFRP on defected of pipes

  • Deao Kong
  • , Guijun Xian*
  • *Corresponding author for this work
  • Harbin Institute of Technology
  • School of Civil Engineering, Harbin Institute of Technology

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Externally wrapped carbon fiber reinforced polymer (CFRP) composites have been considered to be effectively in strengthening or repairing steel pipes. In the present paper, an unidirectional carbon fiber fabric was used to strengthen steel defective pipes. The strengthening effectiveness of ISO/TS 24817 design methods and the effects of CFRP thickness on the burst pressure, failure mode and stress distribution of the repaired pipes were investigated through burst test and finite element analysis. Comparing with defected pipes, the burst pressure of the pipes enhanced by at least 100% strengthened with ISO/TS 24817 methods. The stress of CFRP decreases linearly from inner layer to outer. A simple finite element analysis method was developed to predict the burst pressure of unidirectional CFRP-wrapped defective steel pipes.

Original languageEnglish
Title of host publicationAPFIS 2019 Proceedings - 7th Asia-Pacific Conference on FRP in Structures
EditorsScott T. Smith, Tao Yu, Dilum Fernando, Zhenyu Wang
PublisherAPFIS Conference Series
ISBN (Electronic)9780648752899
StatePublished - 1 Dec 2019
Event7th Asia-Pacific Conference on FRP in Structures, APFIS 2019 - Brisbane, Australia
Duration: 10 Dec 201913 Dec 2019

Publication series

NameAPFIS 2019 Proceedings - 7th Asia-Pacific Conference on FRP in Structures

Conference

Conference7th Asia-Pacific Conference on FRP in Structures, APFIS 2019
Country/TerritoryAustralia
CityBrisbane
Period10/12/1913/12/19

Keywords

  • Burst test
  • CFRP
  • Finite element analysis
  • Pipe strengthening

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