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The Influence of Process Parameters of EDM on the Surface Roughness of Aluminum Matrix Composites Reinforced with SiC Particulates

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Feray Guleryuz L., Ozan S., Kasman S., Ipek R.
Acta Physica Polonica A
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2013
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vol. 123
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issue 2
421-423
EN
This paper investigates the effect of electrical discharge machining parameters on the surface roughness as an alternative method for machining of Al/SiC_{p} metal matrix composites produced with the powder metallurgy. Current, electrode type, pulse-on-time, particle reinforcement weight ratio and voltage were used as the process parameters. An experimental plan (L_{18}) was constituted by using the Taguchi orthogonal design. Results of experiments showed that pulse-on-time (34%) and current (31.26%) is the most influencing parameters. Besides this, the percentage contribution of particle reinforcement on the surface roughness is 6.71%.
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An Experimental Study for Machinability of Al/SiC_{p} Metal Matrix Composites by Laser

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Kasman S., Ozan S., Feray Guleryuz L., Ipek R.
Acta Physica Polonica A
|
2013
|
vol. 123
|
issue 2
221-223
EN
In this study, the laser milling process was used to investigate the machinability of particle reinforced aluminum matrix composites manufactured by powder metallurgy having different amount of SiC_{p} (5, 10, 20 wt%). In this context, the laser parameters like scan speed and fill spacing were associated with the SiC_{p} amount in aluminum (Al) matrix. According to the experimental results, the scan speed is dominant factor on both milling depth and surface roughness. Also, the reinforcement particle amount (wt%) is the effective factor but there is no detected significant relation between the surface roughness and reinforcement particle amount. However, the change in milling depth has been linearly changed with the increase of reinforcement particle amount.
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Characterization of Machined Surface by EDM for Al/B_4C_{p} Composite Material

100%
Kasman S., Feray Guleryuz L., Ozan S., Ipek R.
Acta Physica Polonica A
|
2013
|
vol. 123
|
issue 2
224-226
EN
In this study, electrical discharge machining process was performed to investigate the machinability of Al/B_4C_p metal matrix composites manufactured by powder metallurgy. For this, an experimental layout was conducted by using full factorial design. In the analysis, there are three parameters of which one is at three levels and the remaining are two levels. Totally, 48 experiments were carried out. The surface roughness (R_{a}) was increased with increasing the current (C), pulse-on-time (T_{on}), pulse-off-time (T_{off}) and amount of particle (PR).
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