Genetic Based Experimental Investigation on Finishing Characteristics of AlSiCp-MMC by Abrasive Flow Machining

Abstract

Implementing non-conventional finishing methods in the aircraft industry by the abrasive flow machining (AFM) process depends on the production quality at optimal conditions. The optimal set of the process variables in metal-matrix-composite (MMC) for a varying reinforcement percentage removes the obstructions and errors in the AFM process. In order to achieve this objective, the resultant output functions of the overall process using every clustering level of variables in a model are configured by using genetic programming (GP). These functions forecast the data to vary the percent of silicon carbide particles (particles without experimentation obtaining the output functions for material removing rates and surface roughness changes of Al-MMCs machined with the AFM process by using GP. The obtained genetic optimal global models are simulated and, the results show a higher degree of accuracy up to 99.97% as compared to the other modeling techniques.
 

2017A Alloy surface layer after flow burnishing with glass microspheres

“…A surface roughness of Ra < 50 nm can be achieved using AFM [15,16]. The results of AFM depend on the type of abrasive material and medium, grain concentration in the paste, grain size, number of working cycles, pressure, and flow velocity [17][18][19][20]. Several variants of the classical AFM have been developed; for example, magnetic [21][22][23], rotary [24,25] and hybrid AFM [26][27][28].…”