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Metals 2017, 7(7), 255;

Failure Assessment of Steel/CFRP Double Strap Joints

Department of Mechanical Engineering, Iran University of Science and Technology, Narmak, Tehran 16846, Iran
Department of Mechanical and Industrial Engineering, Norwegian University of Science and Technology (NTNU), Richard Birkelands vei 2b, 7491 Trondheim, Norway
Author to whom correspondence should be addressed.
Received: 8 June 2017 / Revised: 25 June 2017 / Accepted: 1 July 2017 / Published: 6 July 2017
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In the current study, the failure behavior of retrofitted steel structures was studied experimentally and theoretically with steel/carbon fiber reinforced polymer (CFRP) double strap joints (DSJs) under quasi-static tensile loading. A series of DSJs with different bonding lengths are also considered and examined to experimentally assess the effective bond length. To predict the failure load values of the tested specimens, a new stress-based method, namely the point stress (PS) method is proposed. Although some theoretical predictive modelling for the strength between steel/CFRP joints under various loading conditions has been presented, in this work by using the new proposed approach, one can calculate rapidly and conveniently the failure loads of the steel/CFRP specimens. Furthermore, to assess the validity of the new proposed method, further experimental data on steel/CFRP DSJs available in the open literature are predicted using the PS method. Finally, it was found that a good agreement exists between the experimental results and the theoretical predictions based on the PS method. View Full-Text
Keywords: CFRP; double strap joint; failure load prediction; finite element analysis; steel; stress-based failure method CFRP; double strap joint; failure load prediction; finite element analysis; steel; stress-based failure method

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Majidi, H.R.; Razavi, S.M.J.; Berto, F. Failure Assessment of Steel/CFRP Double Strap Joints. Metals 2017, 7, 255.

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