Experimental and numerical study of the fatigue behaviour of composite patch reinforced cracked steel plates |
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| Authors: | Nicholas G. Tsouvalis Lazarus S. Mirisiotis Dimitris N. Dimou |
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| Affiliation: | 1. Engineering Optics Lab, Department of Mechanical and Aerospace Engineering, IIT Hyderabad, India;2. Micro-Mechanics Lab, Department of Mechanical and Aerospace Engineering, IIT Hyderabad, India;1. Mechanical Engineering Department, College of Engineering, King Saud University, Riyadh, Saudi Arabia;2. LMPM, Department of Mechanical Engineering, University of Sidi Bel Abbes, BP 89, Cité Ben M’hidi, Sidi Bel Abbes 22000, Algeria;1. Mechanical Engineering Department, College of Engineering, King Saud University, Riyadh, Saudi Arabia;2. LMPM, Department of Mechanical Engineering, University of Sidi Bel Abbes, BP 89 Cité Ben M’hidi, Sidi Bel Abbes 22000, Algeria;1. Mechanical Engineering Department, College of Engineering, King Saud University, Riyadh, Saudi Arabia;2. LMPM, Department of Mechanical Engineering, University of Sidi Bel Abbes, BP 89, Cité Ben M’hidi, Sidi Bel Abbes, Algeria;1. LMPM, Department of Mechanical Engineering, University of Sidi Bel Abbes, BP 89, Cité Ben M’hidi, Sidi Bel Abbes, Algeria;2. Mechanical Engineering Department, College of Engineering, King Saud University, Riyadh, Saudi Arabia |
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| Abstract: | One-side, low cost carbon/epoxy patches were laminated on large scale specimens, which were tested and subsequently modelled with the finite element method. An R = ?1 cyclic loading was applied and patch strains and crack propagation rate were monitored. The experimental results were very encouraging, demonstrating that patches can effectively slow down the crack growth and extend the specimens’ life by a factor of up to 2, despite their relatively low stiffness ratio. Based on some simplified assumptions, FE modelling proved adequate in accurately predicting the crack propagation rate. |
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