Experimental study of the bond strength between steel substrate and CFRP under impact tensile loads

H. Al-Zubaidy, X. L. Zhao, R. Al-Mahaidi

Research output: Unpublished conference presentation (presented paper, abstract, poster)Conference presentation (not published in journal/proceeding/book)Academic researchpeer-review

Abstract

Carbon fibre reinforced polymer (CFRP) has attracted a great deal of attention for upgrading and/or rehabilitating steel structures following its successful application for the strengthening of concrete structures. It is vital to maintain a sound bond between the CFRP and the steel substrate during service by selecting appropriate adhesives. The effect of dynamic loading (e.g. impact) on such bond is not well understood. This paper describes an experimental investigation of the efficiency of the bond between steel and normal modulus CFRP sheets under dynamic tensile loads of various loading speeds. The pull-off adhesion testing method was adopted. It was found that significant enhancement in adhesion bond strength for two types of resins was achieved at high strain rates. The failure mechanisms of both adhesives were remarkably influenced by speeds of loading and they illustrated noticeable changes compared to static loads.

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

  • Adhesive adhesion strength
  • CFRP sheet
  • Dynamic tensile loads
  • Pull-off test
  • Steel plate

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Materials Science(all)

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