Techno Press
Techno Press

Steel and Composite Structures   Volume 15, Number 6, December 2013, pages 659-677
DOI: http://dx.doi.org/10.12989/scs.2013.15.6.659
 
Mechanical properties of steel-CFRP composite specimen under uniaxial tension
Faris A. Uriayer and Mehtab Alam

 
Abstract     [Full Text]
    This paper introduces new specimens of Steel-Carbon Fibre Reinforced Polymer composite developed in accordance with standard test method and definition for mechanical testing of steel (ASTM—A370). The main purpose of this research is to study the behaviour of steel-CFRP composite specimen under uniaxial tension to use it in beams in lieu of traditional steel bar reinforcement. Eighteen specimens were prepared and divided into six groups, depending upon the number of the layers of CFRP. Uniaxial tensile tests were conducted to determine yield strength and ultimate strength of specimens. Test results showed that the stress-strain curve of the composite specimen was bilinear prior to the fracture of CFRP laminate. The tested composite specimens displayed a large difference in strength with remarkable ductility. The ultimate load for Steel-Carbon Fibre Reinforced Polymer composite specimens was found using the model proposed by Wu et al. (2010) and nonlinear FE analysis. The ultimate loads obtained from FE analysis are found to be in good agreement with experimental ones. However, ultimate loads obtained applying Wu model are significantly different from experimental/ F E ones. This suggested modification of Wu model. Modified Wu's model which gives a better estimate for the ultimate load of Steel-Carbon Fibre Reinforced Polymer (SCFRP) composite specimen is presented in this paper.
 
Key Words
    CFRP laminate; steel strip; tensile load; modified model; specimen
 
Address
(1) Faris A. Uriayer: Department of Civil Engineering, Jamia Millia Islamia, New Delhi, India (on Leave from Kufa Universit, Iraq);
(2) Mehtab Alam: Department of Civil Engineering, Faculty of Engineering and Technology, Jamia Millia Islamia, New Delhi, India.
 

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