Grammatical Evolution and STE Criterion

Processing of Nearly Pure Iron Using 400w Selective Laser Melting – Initial Study

“…The surface morphology consists of a number of craters [Luo 2009], [Han 2007 and also lumps of debris that were detected at 20% of the surface of the samples. The surface microcracks formed as a result of expansion processes caused by highspeed cooling were detected at 5% of the surface of the samples.…”

“…The discharge causes melting of microscopic particles of material which are subsequently flushed from the discharge place by dielectric. In this way, craters are formed on the surface of the machined material and wire electrode [Ho 2004], [Abbas 2007]. The WEDM technology is used mainly for machining of parts that are complex in shape and indented and also with parts that are difficult to machine by conventional methods.…”

“…The WEDM technology is used mainly for machining of parts that are complex in shape and indented and also with parts that are difficult to machine by conventional methods. When machining, no mechanical stresses affect the material and the only requirement is a minimum electrical conductivity of the workpiece [Kumar 2012]. It is possible to cut the materials that are extremely hard, tough or, conversely, soft, even after the final heat treatment.…”

“…These characteristics are dependent on the type of the applied wire electrode, dielectric fluid, machine condition and in particular on the choice of parameters of the eroding process. These parameters can be found by various methods [Matousek 2009] [Selvakumar 2014] observed that ANOVA revealed that the cutting speed of 5083 Al alloy was independent on wire tension and Ra was independent on pulse-off time and wire tension. An optimum parameter combination for the minimum Ra and the maximum cutting speed was obtained by the analysis of signalto-noise (S/N) ratio.…”

“…An optimum parameter combination for the minimum Ra and the maximum cutting speed was obtained by the analysis of signalto-noise (S/N) ratio. [Manna 2006] optimized the CNC wire cut electrical discharge machining parameters in machining of aluminum-reinforced silicon carbide metal matrix composites using the Taguchi and Gauss elimination dual response approach method. [Lin 2002] reported the effect of current polarity, voltage, and spark on-time on EDM process by using Taguchi method.…”