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FME Transactions
2020, vol. 48, br. 1, str. 173-179
jezik rada: engleski
vrsta rada: neklasifikovan
objavljeno: 04/05/2020
doi: 10.5937/fmet2001173M
Creative Commons License 4.0
Optimizacija parametara obrade kod hibridnog kompozita ojačanog Al/SiC/Gr primenom analize ANOVA i grej relacione analize
School of Mechanical Engineering and Building Science, Vellore Institute of Technology, Chennai, India

e-adresa: elango.m@vit.ac.in

Sažetak

Izučava se uticaj dodavanja grafita kompozitu ojačanom Al/SiC koji je dobijen mešanjem ulivanjem. Pripremljena su tri uzorka od legure Al6061 + 5 tež.proc. SiC i promenljivim procentom grafita. Navedena legura je pogodna za obradu i zavarivanje i najčešće se koristi za izradu krila i trupa letelica. Zahtevi koje postavlja obrada kompozita su tolerancija dimenzija, hrapavost površine i izrada rupa. Slojeviti kompozit ojačan Al/SiC/Gr se koristi kod komore za sagorevanje gasne turbine. Obrada hibridnog kompozita je obavljena na tokarskom uređaju Esteem ETM 356 pomoću volframskog karbidnog umetka. Optimizacija tri parametra obrade: brzina rezanja, brzina pomoćnog kretanja i dubina rezanja obavljena je na četiri nivoa. Na osnovu rezultata dobijenih ANOVA analizom brzine pomoćnog kretanja (35,83%) utvrđeno je da ima značajnog uticaja na površinsku hrapavost. Grej relaciona analiza je primenjena za istovremeno poboljšanje uklanjanja materijala i hrapavosti.

Ključne reči

hybrid metal matrix composites; Al6061; SiC; Graphite; Surface roughness; ANOVA; GRA

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