A digital image analysis to evaluate delamination factor for wind turbine composite laminate blade |
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| Authors: | V.A. Nagarajan J. Selwin Rajadurai T. Annil kumar |
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| Affiliation: | 1. Faculty of Mechanical Engg., Anna University of Technology, Tirunelveli, India;2. Department of Mechanical Engg., Government College of Engg., Tirunelveli, India;3. Department of Aeronautical Engg., Noorul Islam University, India;1. University of the Basque Country, UPV/EHU, Faculty of Engineering of Bilbao, Department of Mechanical Engineering, Alameda de Urquijo s/n, 48013 Bilbao, Bizkaia, Spain;2. Arts et Métiers ParisTech, Talence, France;3. IKERBASQUE, Basque Foundation for Science, Bilbao, Spain;1. Department of Power Mechanical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan, ROC;2. Department of Mechatronics Engineering, Ta Hua Institute of Technology, Hsinchu 30740, Taiwan, ROC;1. Department of Mechanical Engineering, McGill University, Montreal, QC, Canada;2. Aerospace Manufacturing, National Research Council Canada, Montreal, QC, Canada;1. Aerospace Non-Destructive Testing Laboratory, Faculty of Aerospace Engineering, Delft University of Technology, Kluyverweg 1, 2600 GB Delft, The Netherlands;2. Structural Integrity & Composites Group, Faculty of Aerospace Engineering, Delft University of Technology, Kluyverweg 1, 2600 GB Delft, The Netherlands;1. Vellore Institute of Technology, Vellore, India;2. School of Electrical Engineering, Vellore Institute of Technology, Vellore, India;3. Sri Ramachandra faculty of Engineering and Technology, Sri Ramachandra Institute of Higher Education and Research, Chennai, India;4. School of Computing, SASTRA Deemed University, Thanjavur, India |
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| Abstract: | Kinetic energy of wind is converted into useful power by the rotation of blades that are fabricated using glass fiber reinforced composite. Bolted connections are used to fasten the spares with composite shells of the blades. In order the effect this fastening, holes of appropriate size are drilled in the composite laminates. Drilling in composite material is a common phenomena. However the damage caused in the material during drilling results in a drastical reduction of the performance of the component. A newer quantitative digital measurement model is generated using Buckingham’s π theorem to characterize the damage level, termed as refined delamination factor (FDR). Along with FDR, a comparison of FD and FDA is presented. Experimental results are used to validate the accuracy of proposed criteria. |
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