Optimization and Analysis for Surface Roughness of SiCp/Al Metal Matrix Composite by Micro-WEDM

Xue Song Geng; Yu Kui Wang; Bo Yan Song; Zhen Long Wang

doi:10.4028/www.scientific.net/AMR.821-822.1266

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 821-822Optimization and Analysis for Surface Roughness of...

Optimization and Analysis for Surface Roughness of SiCp/Al Metal Matrix Composite by Micro-WEDM

Abstract:

The material removal process of SiC/Al particulate (SiCp/Al) metal matrix composite by micro-wire electrical discharge machining (micro-WEDM) is influenced by many factors interaction, which makes the mathematical model of surface roughness (SR) be difficult to obtain effectively. To solve this problem, experimental study method is conducted under the constraint conditions. In this paper, a central composite design (CCD) testing with 3-factor and 5-level is carried out and SiCp/Al metal matrix composite machining test scheme is designed, and then second-order relational model is established between SR and main power parameters (open-circuit voltage, capacitance, and pulse duration) by using response surface methodology. Through multiple quadratic fitting, the quadratic regression mathematical model of SR is obtained. Constrains of actual machining condition upon the parameters are analyzed further. With the goal of reducing SR of SiCp/Al metal matrix composite by micro-WEDM, the parameters optimization model is established. Particle swarm optimization (PSO) algorithm and its procedure are designed to solve the model. Test proves that the algorithm could achieve optimized process parameters which satisfy multiple constraints rapidly and effectively.

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Periodical:

Advanced Materials Research (Volumes 821-822)

Pages:

1266-1270

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.821-822.1266

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Online since:

September 2013

Authors:

Xue Song Geng, Yu Kui Wang, Bo Yan Song, Zhen Long Wang

Keywords:

Central Composite Design, Micro-WEDM, Particle Swarm Optimization (PSO), SiCp/Al Metal Matrix Composite

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