Surface roughness investigation of glass/luffa fiber reinforced epoxy composite with and without addition of novel Shorea robusta filler.

Analyse the surface roughness of Glass/Luffa fiber composite with and without the addition of Shorea robusta filler. For this comparison investigation, 20 samples from each group were used. Epoxy composite with glass/luffa reinforcement in Group 1. Group 2's glass/luffa reinforced epoxy composite with shorea robusta filler. There will be a total of 40 samples, with 20 samples in each group. The intended effect size, alpha level, and power were taken into account while calculating the right sample size for statistical significance using the G-power software. To guarantee acceptable statistical power, a power level of 0.8, alpha of 0.05, and beta of 0.2 will be used. The mean surface roughness of the Group 1 composite was found to be9.1380 µm, while Group 2 showed a significantly less surface roughness of 7.954 µm. A statistical examination indicated a p-value of 0.001, which is below the predetermined significance 0.05(p<0.05). This implies that there is a statistically significant disparity in surface roughness between the two groups. The findings provide Glass/Luffa epoxy composites with 20 % filler reinforcement showed less surface roughness than composite without the addition of filler. [ABSTRACT FROM AUTHOR]