Experimental and Numerical Investigation of CFRP-Strengthened Steel Beams under Impact Load
Publication: Journal of Structural Engineering
Volume 145, Issue 4
Abstract
Use of carbon fiber–reinforced polymer (CFRP) strengthening of structural elements has been gaining increased traction over the past few years. Although some research has been carried out on the behavior of CFRP-strengthened steelwork under static and fatigue loads, no single study exists that experimentally captures the response of CFRP-strengthened steel beams under impact load. In the present study, a series of tests was conducted to gain insight into the effect of impact load on such beams. The parameters examined in the experiments were the thickness and length of the CFRP layers. The impact test was performed by dropping a 91-kg impactor with a velocity of . A finite-element analysis (FEA) model was developed in which the bond between CFRP and steel, strain rate effects for steel, and failure of both CFRP and adhesive material were included. Comparing the test data with corresponding finite-element results confirmed a high level of accuracy of the predicted results. A series of detailed analyses on the impact behavior of CFRP-strengthened steel beams was performed using the validated finite-element model to provide further insight.
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Acknowledgments
Our thanks to the Ministry of Higher Education and Scientific Research in Iraq for funding this research. The authors wish to acknowledge the technical staff in the School of Mechanical, Aerospace and Civil Engineering, University of Manchester, for facilitating the experimental work.
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Published In
Journal of Structural Engineering
Volume 145 • Issue 4 • April 2019
Copyright
©2019 American Society of Civil Engineers.
History
Received: Feb 7, 2017
Accepted: Sep 11, 2018
Published online: Jan 16, 2019
Published in print: Apr 1, 2019
Discussion open until: Jun 16, 2019
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