The effect of heat compression on mechanical behaviour and moisture content of pineapple leaf fibre and sugarcane bagasse waste for plate disposal

The waste from farming and industry could be reduced and used as raw materials in construction to achieve sustainable technologies. This study focuses on the use of waste products from the pineapple leaf and sugarcane bagasse as compounds in replacing polystyrenes and others plastics glass in the manufacture of plate disposal. This platter is made from pineapple leaf and sugarcane bagasse by six (6) series of mixtures with different percentages namely series 1 (20% of pineapple leaf), series 2 (30% of pineapple leaf) series 3 (40% of pineapple leaf), series 4 (60 % of pineapple leaf), series 5 (70% of pineapple leaf) and series of 6 (80% of pineapple leaf). Two (2) series is N8T2 (80% of pineapple leaf and 20 % sugarcane bagasse waste) and N2T8 (20% of pineapple leaf and 80% sugarcane bagasse waste) focusing on this study for furthermore understanding the effect of replacing plate disposal from pineapple laef fiber and sugarcane bagasse waste material. A platter hot press machine is built with variable adjustment temperature on the surface of the mold according parameters required are 50°C, 100°C and 150°C. The effect of heat compression on physical and mechanical behavior of the pineapple leave and sugarcane bagasse waste plate disposal was evaluated. From observation and results showed the best roughness surface appearance on N2T8.The Optimum percentage pineapple leaf and sugarcane bagasse waste is good present at heat parameter 50°C for specimen N2T8. The best water absorption on specimen series N8T2 because pineapple leaf potential to hydroscopic and water resistance. It can be concluded that pineapple leaf and sugarcane bagasse waste have potential raw material for strength and lightweight of paper disposal composition applications

Effects of ColdArc welding parameters on the tensile strengths of high strength steel plate investigated using the Taguchi approach

The objective of this study is to investigate the effect of process parameters on ColdArc welding of high strength steel plate using 1.2 mm diameter mild steel welding wire. A Taguchi Design of Experiments (DOE) method with grey relational analysis approach was selected for data collection and optimization. 9 experiments were conducted following the L9 (33) Taguchi Orthogonal Array Design. The best result from the experiments for tensile strength was obtained for welding parameters of 70 A (current), 17.6 V (voltage) and 800 mm/min welding speed. Based on the results, the Taguchi analysis predicted the optimised tensile strength would be obtained when the welding current, welding voltage and speed are at 70V, 17.6A and 600 mm/min, respectively. Thus, most significant parameters for tensile properties of cold rolled steel is welding speed (37%), voltage (34 %) and current (28%). These factors are critical in determining the tensile strength, where increasing the welding speed reduces the heat input. However, decreasing the heat input by lowering the welding voltage resulted in bad weld bead formation. © Universiti Malaysia Pahang, Malaysi