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Machining Investigations of Squeeze Cast TiB2/Al 7075 Composites through EDM: Regression Modelling and Weighted Principal Component Analysis

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Języki publikacji
EN
Abstrakty
EN
2 wt.% TiB2 (mean particle size: 400 nm) reinforced Al 7075 metal matrix composites (MMCs) fabricated through mechanical stirring and ultrasonic agitation integrated squeeze casting process were subjected to electrical discharge machining (EDM) after determining the physical and mechanical properties. EDM was conducted with Cu electrode tools to investigate influence of machining factors, i.e. peak current (IP), pulse on time (TON) and gap voltage (VG) on the tool wear rate (TWR), material removal rate (MRR) and average surface roughness (ASR) of the machined surfaces. All the three responses increased on increasing IP and TON, but reduced on increasing VG. The machined surfaces were studied through scanning electron microscope (SEM). Significance of the EDM parameters on the individual responses were studied using analysis of variance (ANOVA) and regression models for the responses were developed using response surface method (RSM). The responses under consideration were optimized simultaneously using Taguchi embedded weighted principal component analysis (WPCA), which resulted the parametric combination of 4A (current), 100 μs (pulse duration) and 75V (voltage) was the optimal setting for the multi-criteria decision problem. Finally, the result of optimization was validated by conducting some confirmatory experiments.
Twórcy
  • KIIT Deemed to be University, School of Mechanical Engineering, Bhubaneswar-751024, India
  • KIIT Deemed to be University, School of Mechanical Engineering, Bhubaneswar-751024, India
  • KIIT Deemed to be University, School of Mechanical Engineering, Bhubaneswar-751024, India
  • KIIT Deemed to be University, School of Mechanical Engineering, Bhubaneswar-751024, India
autor
  • KIIT Deemed to be University, School of Mechanical Engineering, Bhubaneswar-751024, India
  • KIIT Deemed to be University, School of Mechanical Engineering, Bhubaneswar-751024, India
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Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-8bfcc871-57b1-48cf-b8a9-8a64d787271a
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