Evaluation of Impact Strength of Epoxy Based Hybrid Composites Reinforced with E-Glass/Kevlar 49
In hybridization different fibers are stacked layer by layer to produce laminates have specific strength and stiffness and employed in light weight high strength applications. Physically mean fabricated hybrid composites used in aerospace, under water, body armors and armed forces establishment. I...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Mehran University of Engineering and Technology
2017-10-01
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| Series: | Mehran University Research Journal of Engineering and Technology |
| Subjects: | |
| Online Access: | http://publications.muet.edu.pk/research_papers/pdf/pdf1630.pdf |
| Summary: | In hybridization different fibers are stacked layer by layer to produce laminates have specific strength
and stiffness and employed in light weight high strength applications. Physically mean fabricated hybrid
composites used in aerospace, under water, body armors and armed forces establishment. In present
work drop-weight impact response of hybrid composites were investigated by making laminates of hybrid
composites. In Hybridization layers of E-glass (roving) and Kevlar 49 fabrics stacked with epoxy resin.
The layers formulation was set up by hand layup method. Impregnationsof epoxy resin of commercial
grade (601A) in fabrics were accomplished by VRTM (Vacuum Bagging Resin Transfer Molding)
technique. Layup placementof Glass fibers/ Kevlar at 0°/90°, 45°/45° and 30°/60° were set for this work.
Mechanical properties such as impact strength, bear resistance and break resistance were analyzed by
usingASTM D-256 and D-3763 standard.Experimental investigation was conducted using instrumented
Dart impact and Izod Impact test. E-glass/Kevlar 49 at layup 0°/90°and 30°/60°exhibited improvedimpact
strength than 45°/45°. The surface morphology and fractography were also investigated by capturing
different images of Specimens by using the SEM (Scanning Electron Microscopy). The fiberreinforcement
and matrix fracture were also observed by using SEM.The SEM images suggest that epoxy resin tightly
bonded with Kevlar fibers whereas Glass fibers were pulled out from laminations. |
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| ISSN: | 0254-7821 2413-7219 |