An experimental investigation to compare surface roughness of novel coir pith powder filled Glass/Palm fiber reinforced epoxy composite with Glass/Palm fiber epoxy composite

This study’s primary purpose is to analyse and compare the surface roughness of an unique Glass/Palm fibre epoxy composite that is filled with reinforcement of coir pith powder and one that does not contain reinforcement of coir pith powder. The Components and Procedures: The experimental group consisted of twenty samples of a novel coir pith powder reinforced epoxy composite made with glass and palm fibre with a volume percentage of twenty percent. The control group consisted of twenty samples of a glass and palm fiber-reinforced epoxy composite. For the preparation of composite plates, the hand lay-up approach was utilised. An 80 percent GPower is utilised for this operation, with an α value of 0.05 each group for the purpose of computing the sample size. The overall sample size totals forty. The surface roughness test was carried out in accordance with the standard established by SAE. Upon analysis, it was determined that the Glass/Palm fibre epoxy composite had a maximum surface roughness of 6.00 µm. The Glass/Palm fibre reinforced epoxy composite, which contained 20 percent coir pith powder filler, exhibited a maximum surface roughness of 5.03 micrometres upon examination. Based on the findings, it was determined that there was a statistically significant difference between the two groups, as indicated by the p value of 0.001 (it is less than 0.05). Given the constraints of this investigation, the results indicate that the Glass/Palm fibre reinforced epoxy composite with 20 percent volume fraction coir pith powder exhibited a surface roughness that was lower than that of the Glass/Palm fibre epoxy composite.