Evaluation of Impact Strength of Epoxy Based Hybrid Composites Reinforced with E-Glass/Kevlar 49

Subhan Ali Jogi; Muhammad Moazam Baloch; Ali Dad Chandio; Iftkhar Ahmed Memon; Ghulam Sarwar Chandio

doi:10.22581/muet1982.1704.25

Subhan Ali Jogi Department of Metallurgy & Material Engineering, Dawood University of Engineering & Technology, Karachi
Muhammad Moazam Baloch Department of Metallurgy and Materials Engineering, Mehran University of Engineering and Technology, Jamshoro
Ali Dad Chandio Department of Metallurgical Engineering, NED University of Engineering and Technology, Karachi
Iftkhar Ahmed Memon Department of Metallurgy and Material Engineering, Dawood University of Engineering and Technology, Karachi.
Ghulam Sarwar Chandio Department of Industrial Engineering and Management, Dawood University of Engineering and Technology, Karachi

DOI: https://doi.org/10.22581/muet1982.1704.25

Abstract

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 0Â°/90Â°, 45Â°/45Â° and 30Â°/60Â° 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 0Â°/90Â°and 30Â°/60Â°exhibited improvedimpact strength than 45Â°/45Â°. 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.