EXPERIMENTAL INVESTIGATION ON CNC MILLING ANDÂ MECHANICAL PERFORMANCE OF FIBER COATEDÂ WIREÂ MESHÂ HYBRID COMPOSITES

Jayaraman Thangamani and Prabu Krishnasamy
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Jayaraman Thangamani: School of Mechanical Engineering, Vellore Institute of Technology, Vellore 632014, Tamil Nadu, India
Prabu Krishnasamy: School of Mechanical Engineering, Vellore Institute of Technology, Vellore 632014, Tamil Nadu, India

Surface Review and Letters (SRL), 2023, vol. 30, issue 12, 1-15

Abstract: In recent years, the use of natural fibers has increased in manya applications, particularly in automotive industry, owing to their lightweight, high specific strength, recyclability, and ecological properties. This study aims to investigate the influence of copper filler on fiber-coated hybrid composite through mechanical and machining (CNC milling) characterization. Initially, the copper filler was characterized using the energy dispersive X-ray (EDX), particle size analysis (scanning electron microscope), and component analysis (X-ray diffraction (XRD)). Four coated natural fiber/wire mesh hybrid composite designs were developed and identified as hemp/mesh/ramie composite [HMR (1-4)]. In this work, 16 experiments were designed by central composite design (CCD) using Design Expert 13, considering the spindle speed, feed rate, and composite type as input parameters. The results indicate that copper filler particle proportion influenced the tensile strength and impact resistance of the HMR hybrid composite (16% & 15.42%). A fiber coating with a higher infill percentage reduces water absorption. The responses were estimated based on the resultant force and surface roughness, which were influenced by the weight percentage of the filler. In all the spindle speeds, the resultant forces are increased with raise in feed rates (120–600 mm/min).

Keywords: Fiber coating; copper filler; wire mesh; water absorption; composite milling; DOE (search for similar items in EconPapers)
Date: 2023
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DOI: 10.1142/S0218625X23500841

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