Damping characteristics of nanoclay filled hybrid laminates during medium velocity impact |
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| Affiliation: | 1. Composites Research Group, Department of Mechanical Engineering, Durban University of Technology, Durban, South Africa;2. Composites Technology Centre, Department of Aerospace Engineering, Indian Institute of Technology, Madras, India;1. 63981 Unit of PLA, Wuhan 430311, China;2. Science and Technology on Advanced Ceramic Fibers and Composites Laboratory, National University of Defense Technology, Changsha 410073, China;1. Department of Civil Engineering, University of Texas at Arlington, Box 19308, Arlington, TX 76019, USA;2. Innovative Engineering Associates, 18333 Preston Road, Suite 205, Dallas, TX 75252, USA;1. Department of Civil, Structural, and Environmental Engineering, University at Buffalo, State University of New York, Buffalo, NY 14260, USA;2. Material Science and Technology Division, Physical Sciences Directorate, Oak Ridge National Lab, Oak Ridge, TN 37831, USA;3. Department of Mechanical and Aerospace Engineering, University at Buffalo, State University of New York, Buffalo, NY 14260, USA |
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| Abstract: | The objective of this paper is to study the vibrational damping characteristics during medium velocity impact of nanoclay filled glass fiber reinforced epoxy hybrid laminates. A series of laminates with varying degree of nanoclay concentration (0–5 wt.%) and fiber weight fraction (25–75 wt.%) were prepared by vacuum assisted resin infusion molding (VARIM) method. The laminates were subjected to medium velocity projectile impact using in-house built gas gun set-up and the ballistic limit of laminates series was determined. The result indicated that during impact, the laminate undergoes vibrational damping. This damping property is a function of fiber weight fraction and orientation, nanoclay concentration and nanocomposite structure. A 42% increase of ballistic limit was observed for 5 wt.% nanoclay filled hybrid (50 wt.% fiber) when compared with unfilled composite. Structural and modal analysis of hybrids showed that the increased ballistic limit of nanoclay filled hybrids is due to the nanocomposite structure and improved damping and fracture properties. |
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| Keywords: | A Laminates A Nano-structures B Impact behavior B Vibration |
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