Statistical analysis of the parameters in SPIF/DPIF in the thickness reduction in an experimental geometry

The objective of the present study was to determine the thickness reduction during the incremental deformation process with two techniques: SPIF/DPIF. A geometric structure was built using software computer-aided design (CAD) and the paths simulated in software computer-aided manufacturing (CAM). Experimental design of a full factorial type was made 23, for each technique, eight simulations, and three replicas. The variables studied in each experiment were the wall angle, the depth increase and the diameter of the tool. The three parameters are associated with the incremental deformation, although the angle was the most influential and the interaction between them in both techniques was significant. There was no difference in the comparative analysis between the different points in which the reduction of the thickness measured, just as neither one technique showed to be superior to the other. The angle of 68°, the depth of 1.0707 mm and the diameter of 9.3737 mm produced the least deformation with the SPIF technique and the angle of 60°, the depth of 1.2 mm and the diameter of 8 mm produced the least deformation with DPIF. © 2019 Inderscience Enterprises Ltd