In this study, mode I fatigue crack growth behavior of single edge notched thin aluminum plates repaired with single side composite patches is investigated experimentally. Three patches are investigated in this analysis, 1- three layers carbon/epoxy laminated composite patch, 2- smart patches contained shape memory alloy (SMA) wires without pre-strain embedded in between the carbon/epoxy layers, and 3- smart patches contained SMA wires with pre-strain embedded in between the carbon/epoxy layers. The results are compared with the results obtained for un-repaired notched plate and the influence of SMA wires is also studied. The experimental results show a significant increase in crack growth life in all repaired plates compared with un-repaired plate. The repaired plates with smart pre-strained SMA patches show greater life as compared to other plates repaired by other patches. The three layers carbon/epoxy patches show better results compared to smart SMA un-strained patches. Also, numerical modeling is done by ANSYS software to obtain the stress intensity factor in mode I fatigue loading and then applied to Paris law for prediction of the fatigue crack growth life. The results are compared with the experimental results and a good agreement is obtained.
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ASME 2010 10th Biennial Conference on Engineering Systems Design and Analysis
July 12–14, 2010
Istanbul, Turkey
Conference Sponsors:
- International
ISBN:
978-0-7918-4915-6
PROCEEDINGS PAPER
Fatigue Behavior of Notched Aluminum Plates Repaired by Smart and Composite Patches
S. Mohammad Reza Khalili,
S. Mohammad Reza Khalili
K.N. Toosi University of Technology, Tehran, Iran
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Reza Eslami Farsani,
Reza Eslami Farsani
K.N. Toosi University of Technology, Tehran, Iran
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Pasha Mojahedi
Pasha Mojahedi
Islamic Azad University, South Tehran Branch, Tehran, Iran
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S. Mohammad Reza Khalili
K.N. Toosi University of Technology, Tehran, Iran
Reza Eslami Farsani
K.N. Toosi University of Technology, Tehran, Iran
Pasha Mojahedi
Islamic Azad University, South Tehran Branch, Tehran, Iran
Paper No:
ESDA2010-24893, pp. 577-583; 7 pages
Published Online:
December 28, 2010
Citation
Khalili, SMR, Eslami Farsani, R, & Mojahedi, P. "Fatigue Behavior of Notched Aluminum Plates Repaired by Smart and Composite Patches." Proceedings of the ASME 2010 10th Biennial Conference on Engineering Systems Design and Analysis. ASME 2010 10th Biennial Conference on Engineering Systems Design and Analysis, Volume 1. Istanbul, Turkey. July 12–14, 2010. pp. 577-583. ASME. https://doi.org/10.1115/ESDA2010-24893
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