Multi-Objective Optimization of Machining Parameters for Drilling LM5/ZrO2 Composites Using Grey Relational Analysis

被引:9
|
作者
Juliyana, Sunder Jebarose [1 ]
Prakash, Jayavelu Udaya [1 ]
Cep, Robert [2 ]
Karthik, Krishnasamy [1 ]
机构
[1] Vel Tech Rangarajan Dr Sagunthala R&D Inst Sci & T, Dept Mech Engn, Chennai 600062, India
[2] VSB Tech Univ Ostrava, Fac Mech Engn, Dept Machining Assembly & Engn Metrol, 17 Listopadu 2172-15, Ostrava 70800, Czech Republic
关键词
composites; drilling; grey relational analysis; design of experiments; ANOVA; METAL-MATRIX COMPOSITES; CUTTING CONDITIONS; WEAR PARAMETERS; REINFORCEMENT; MACHINABILITY; PARTICLES; QUALITY;
D O I
10.3390/ma16103615
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
In today's world, engineering materials have changed dramatically. Traditional materials are failing to satisfy the demands of present applications, so several composites are being used to address these issues. Drilling is the most vital manufacturing process in most applications, and the drilled holes serve as maximum stress areas that need to be treated with extreme caution. The issue of selecting optimal parameters for drilling novel composite materials has fascinated researchers and professional engineers for a long time. In this work, LM5/ZrO2 composites are manufactured by stir casting using 3, 6, and 9 wt% zirconium dioxide (ZrO2) as reinforcement and LM5 aluminium alloy as matrix. Fabricated composites were drilled using the L-27 OA to determine the optimum machining parameters by varying the input parameters. The purpose of this research is to find the optimal cutting parameters while simultaneously addressing the thrust force (TF), surface roughness (SR), and burr height (BH) of drilled holes for the novel composite LM5/ZrO2 using grey relational analysis (GRA). The significance of machining variables on the standard characteristics of the drilling as well as the contribution of machining parameters were found using GRA. However, to obtain the optimum values, a confirmation experiment was conducted as a last step. The experimental results and GRA reveal that a feed rate (F) of 50 m/s, a spindle speed (S) of 3000 rpm, Carbide drill material, and 6% reinforcement are the optimum process parameters for accomplishing maximum grey relational grade (GRG). Analysis of variance (ANOVA) reveals that drill material (29.08%) has the highest influence on GRG, followed by feed rate (24.24%) and spindle speed (19.52%). The interaction of feed rate and drill material has a minor impact on GRG; the variable reinforcement percentage and its interactions with all other variables were pooled up to the error term. The predicted GRG is 0.824, and the experimental value is 0.856. The predicted and experimental values match each other well. The error is 3.7%, which is very minimal. Mathematical models were also developed for all responses based on the drill bits used.
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页数:13
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