Online ISSN: 2515-8260

Keywords : Taguchi Analysis

Influence on Ti-AIN Nano-coated drill bit on machinery parameters and quality of hole in dry drilling of CFRP

Rishabh Chaturvedi; Aman Sharma; Pradeep Kumar Singh

European Journal of Molecular & Clinical Medicine, 2020, Volume 7, Issue 4, Pages 664-674

Many of the researchers attained concentration on CFRP (Carbon fiber reinforced polymers) and identified as maximum material for the implementing in the domains of engineering in former past years unsettled for their maximum robustness for less ratio weight, resistance of corrosion & resilience. However, process of machining is seen as the great challenge due to their high strength & high hardness. The selection of cutting tool is another aspect. The present contribution of experimental work deals with the impact of machining aspects on CFRP plates prepared by Hand lay-up procedure. Here, the simulation study has been conducted on a CNC Drilling machine by considering Speed, Feed and type of Cutting tool as parameters. A High-Speed Steel (HSS) Drill bit of size 12mm is used to drill the hole without coating and with titanium-aluminum-nitride (TiAlN) Nano coating. The drilling operation further enhanced once again by double coating of HSS tool with titanium-aluminum-nitride to describe the hole quality. The drilling operation is performed on six different thicknesses of CFRP plates to observe the quality of the hole at entry and exit. When the double coated HSS tool introduced it is observed that the quality of hole at entry and exist is same and without push-out delamination (POD). The observations are optimized by using Design of experiments (DOE). Finally, the outcomes exhibit the optimal drill hole quality surface on the CFRP metal through using double coating of titanium-aluminum-nitride on HSS drill bit is explained by using Taguchi Analysis for six different thickness.

Multi Response Optimization In Cold Metal Transfer Welding

A. Sirisha Bhadrakali; K. L. Narayana; T. Ram Prabhu

European Journal of Molecular & Clinical Medicine, 2020, Volume 7, Issue 6, Pages 2925-2936

For single response process parameter optimization, Taguchi analysis is used. By varying the settings, the user may obtain variable results that always depend on selected data parameters. Hence optimization of multi responses and their characteristics is the solution. Mechanical properties and their improvements are critical for Cold Metal Transfer Welding. In this paper, a multi-response objective optimization process, the DEAR approach is proposed for Stainless steel welding using the CMT process. Various process parameters for this type of welding are, Nozzle to tip distance is varied to test the multiple responses like Tensile test, Surface Roughness. Taguchi L8 Orthogonal Array was picked up to acquit the experiment. Various parameters were optimized for the butt- welded specimens by decided approach and each process parameter, and its percentage contribution in the outcome was identified.