Nickel super alloys have remarkable thermo mechanical capabilities, making them important in industries such as nuclear, chemical, petrochemical, and aerospace. Conversely its difficult machining and cause the poor surface finish and tool wear and so on. This study proposes optimizing machining parameters of Inconel 825 such as cutting speed, feed, and depth of cut towards the responses such as surface roughness, tool flank wear, and cutting force. Optimization of process parameter for this study; the Taguchi Design of Experiments, Grey Relational Analysis, Fuzzy Logic, and Principal Component Analysis (PCA) were used. Experimental were conducted using an L9 orthogonal array and outcomes were evaluated using ANOVA towards the most influencing process parameter. Form the results indicated that the cutting is the most influencing compare with the other parameters. The optimal parameters for turning Inconel 825 were found to be 50 m/min cutting speed, 0.2 mm/rev feed rate, and 0.6 mm depth of cut towards the machining responses. This results conduits towards the machining efficiency of Inconel 825 for industrial applications.

The impact of the widespread use of electronic products in the information technology era is known as e-waste. Electronic waste increased as a result of the rising use of electronic products. These wastes polluting the environment leads to degradation of soil and water. By converting electronic waste into useful materials will reduce the electronics wastes. In this research work the composite materials were prepared with the mobile phone display powder mixed with 5% and 10 % to the epoxy resin act as matrix material glass fibers as reinforcement. The mechanical properties of the composites were tested, the tensile strength has been improved more than 10% and compressive strength has been improved more than 35%. Regarding the application of powdered particles to enhance the resistance to delamination initiation and propagation of fiber-reinforced polymer composite materials.