Fatigue test on out-of-plane gusset welded joints strengthened with carbon fiber reinforced polymer materials

Tao Chen, Qian Qian Yu, Xiang Lin Gu, Xiao Ling Zhao

Research output: Unpublished conference presentation (presented paper, abstract, poster)Conference presentation (not published in journal/proceeding/book)Academic researchpeer-review

6 Citations (Scopus)

Abstract

This paper reports an experimental study on out-of-plane gusset welded joints strengthened with carbon fiber reinforced polymer (CFRP) sheets or plates. Weld toe radius and flank angle were measured with silicon based impression materials before fatigue tension test. Constant amplitude fatigue loadings were applied to 8 specimens with CFRP sheets, 8 specimens with CFRP plates and 5 specimens without reinforcement as the control group. Their fatigue lives and failure modes were observed. All cracks initiated from weld toes on the base plate that are adjacent to longitudinal plate ends. Fatigue lives of all the specimens, which were plotted in S-N graphs, were above the fatigue design F-class curve recommended for steel structures (Japanese Society of Steel Construction). Fatigue life was extended to some extent although scatters were observed in the test results of strengthened specimens. Possible explanations are discussed in the paper and future work is pointed out.

Original languageEnglish
Publication statusPublished - 1 Jan 2012
Externally publishedYes
Event3rd Asia-Pacific Conference on FRP in Structures, APFIS 2012 - Sapporo, Japan
Duration: 2 Feb 20124 Feb 2012

Conference

Conference3rd Asia-Pacific Conference on FRP in Structures, APFIS 2012
Country/TerritoryJapan
CitySapporo
Period2/02/124/02/12

Keywords

  • Carbon fibre reinforced polymer
  • Fatigue test
  • Out-of-plane gusset welded joint
  • Strengthening

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Materials Science(all)

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