Application of Box Behnken design to optimize the parameters for kenaf-polypropylene for sound absorber

This journal discusses the use of Box Behnken Design (BBD) approach as Design of Experiment (DOE) to plan experiments to find the Sound Absorption Coefficient (SAC) for Kenaf/Polypropylene (PP) sandwich sample with an overall objective of optimizing the density, thickness, pressure, and frequency of sound. The first objective of this study is to identify the significant factors of composition mixture of Kenaf Fiber and PP to get optimum SAC. From the results of the Analysis of Variance (ANOVA), all four parameters selected were significantly affected the SAC with the p-value