@inproceedings{00f8c806aae843769e272263101078e5,
title = "Repair of fatigue cracks in steel members by utilising prestressed CFRP patches",
abstract = "CFRP strengthening of steel structures has proved to be an effective method of repair of metallic structures. Under life time cyclic events cracks can initiate and propagate in metallic structures. In order to repair a fatigue induced crack, an effective repair configuration must be chosen. To meet this requirement, understanding the effect of different strengthening parameters on the crack propagation is required. CFRP strengthening has been used in this research to retard the crack growth in initially cracked steel plates. 6mm thick steel plates with two different initial notch lengths were chosen in this study. In order to add to the efficiency of the results, prestressing has been introduced to the CFRP patches. The prestressing load is applied by a hydraulic actuator prior to bonding the CFRP patch to the cracked steel plates. After preparation, the specimens were all tested under a constant amplitude fatigue load. Fatigue life and the crack propagation measurements is the main outcome of this research. This is while strain gauges were also attached to the specimens and the effect of CFRP type and prestress level are also measured. The results show that the CFRP thickness and modulus of elasticity are effective parameters on the enhancement of the fatigue life. Though, application of prestressed CFRP can significantly improve the fatigue life of the cracked members.",
keywords = "CFRP, Crack propagation, Fatigue, Prestressing, Steel, Strengthening",
author = "R. Emdad and R. Al-Mahaidi and Zhao, {X. L.}",
note = "Publisher Copyright: Copyright {\textcopyright} 2016 Department of Civil and Environmental Engineering & Research Institute for Sustainable Urban Development, The Hong Kong Polytechnic University.; 8th International Conference on Fibre-Reinforced Polymer (FRP) Composites in Civil Engineering, CICE 2016 ; Conference date: 14-12-2016 Through 16-12-2016",
year = "2016",
language = "English",
series = "Proceedings of the 8th International Conference on Fibre-Reinforced Polymer (FRP) Composites in Civil Engineering, CICE 2016",
publisher = "Department of Civil and Environmental Engineering and Research Institute for Sustainable Urban Development, The Hong Kong Polytechnic University",
pages = "1126--1133",
editor = "J.G. Dai and J.G. Teng",
booktitle = "Proceedings of the 8th International Conference on Fibre-Reinforced Polymer (FRP) Composites in Civil Engineering, CICE 2016",
}