セルロースナノファイバーを積層したフェルトの吸音解析

抄録

In recent years, the number of sound-absorbing materials used in automobiles and other devices has been increasing, in which several materials are laminated instead of one material in order to reduce weight and improve sound absorption performance. In this study, cellulose nanofibers (CNF) were laminated on felt, which is generally used in automobiles, to improve the sound absorption performance. Three types of felts of different thicknesses and densities were laminated with CNF to measure the flow resistance and sound absorption performance. The results of the analysis of the amount of CNF and the changes in flow resistance and sound absorption coefficient are reported.