Drilling of Hybrid Aluminum Matrix Composites using Grey-Taguchi Method

Abstract

Drilling is a very important hole making process. It is very much useful for assembly of parts. Incorporation of hard ceramic particles into the matrix of metallic composites made them difficult to machine. So, it becomes inevitable to optimize the drilling parameters. The foremost objective of this research work is to fabricate Hybrid Aluminium Matrix Composites(AMCs) of LM6/B4C/Fly Ash with 3%, 6% & 9% by weight percentages of both reinforcements, equally using stir casting technique. The next objective is drilling of composites with feed, speed, drill and percentage of reinforcement as input process parameters at three levels each by Taguchi’s Design of Experiments approach. The final objective is to optimize the drilling process parameters for achieving low thrust force, low surface roughness and minimum burr height using the multi-objective Grey Relational Analysis. Results reveal that drill material plays a major role, being closely followed by feed and speed.

Optimization of Process Parameters for Injection Moulding of Nylon6/SiC and Nylon6/B4C Polymer Matrix Composites

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Optimization of machining parameters in drilling of LM6/B4C/Fly ash hybrid composites

“…In the same way, the flyash added % was 1.5% 3% and 4.5%. The melted material was transferred into the mold at 650 °C and allowed to cool to room temperature [27]. Figure 3 depicts the stir casting setup that was used in this research.…”

Optimization of drilling process variables using taguchi technique for LM6 aluminium alloy

“…LM6 Al alloy was prepared using the stir casting method in the form of plates with the dimension of 100 Â 100 Â 10 mm. Stir casting has several advantages, including ease to use, low-cost production, homogenous distribution of reinforcement particles, and superior mechanical properties [12,13]. An electric furnace was used to melt LM6 alloy ingots using a graphite coated crucible.…”