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

• Autorzy: Pradhan Rahul Chandra , Das Diptikanta , Sahoo Barada Prasanna , Rout Chiranjeeb , Panda Akash , Barla Evangelin

Identyfikatory

DOI

10.24425/amm.2023.142434

• 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 (I_P), pulse on time (T_ON) and gap voltage (V_G) 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 I_P and T_ON, but reduced on increasing V_G. 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.

Słowa kluczowe

EN

Al 7075; TiB2; metal matrix composite; electrical discharge machining; weighted principal component analysis

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2023
• Tom: Vol. 68, iss. 2
• Strony: 551--562
• Opis fizyczny: Bibliogr. 38 poz., fot., rys., tab., wzory

Twórcy

autor

Pradhan Rahul Chandra

• KIIT Deemed to be University, School of Mechanical Engineering, Bhubaneswar-751024, India

• https://orcid.org/0000-0002-8419-0678

autor

Das Diptikanta

• KIIT Deemed to be University, School of Mechanical Engineering, Bhubaneswar-751024, India

• https://orcid.org/0000-0001-8253-6076

autor

Sahoo Barada Prasanna

• KIIT Deemed to be University, School of Mechanical Engineering, Bhubaneswar-751024, India

• https://orcid.org/0000-0002-7819-6563

autor

Rout Chiranjeeb

• KIIT Deemed to be University, School of Mechanical Engineering, Bhubaneswar-751024, India

• https://orcid.org/0000-0001-6616-7434

autor

Panda Akash

• KIIT Deemed to be University, School of Mechanical Engineering, Bhubaneswar-751024, India

• https://orcid.org/0000-0002-1475-7333

autor

Barla Evangelin

• KIIT Deemed to be University, School of Mechanical Engineering, Bhubaneswar-751024, India

• https://orcid.org/0000-0003-0594-0862

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