Delamination investigation and comparison in drilling natural fiber reinforced polymer composite.

To enhance the mechanical characteristics for engineering applications, this work aims to produce a unique bio composite that incorporates natural fiber. At 0, 10, 20, and 30% weight fractions, kenaf fiber (KF) is used to strengthen biopolymer poly-butylene succinate (PBS). An injection molding machine was used to create the polymer composite by adding chopped KFs to the molten PBS. A comparison is made between the prepared composite and plain PBS in terms of their machining characteristics, namely drilling. A control group consisting of unreinforced PBS and an experimental group consisting of PBS with KFs added. There were four groups given consideration. Using the G-Power calculator, three samples were analyzed for each group, each with a probability of 0.05 and a 95% confidence interval. Along with increasing their stiffness and hardness, chopped KFs added to PBS also increase their mechanical strength. Measurements are made of the amount of fiber delamination when a solid carbide tool is drilled in a vertical machining centre. A substantial difference between the groups under consideration is found in the analysis, with a significance level of 0.000 (p<0.05). This indicates that the degree of delamination rises when more KFs are included. Though its mechanical strength is greater, adding KFs to the PBS matrix, under the parameters of this investigation, results in increased delamination because the fibers pull out of the matrix during drilling. [ABSTRACT FROM AUTHOR]