Influence of surface finishing of hardwood cross-section on sound absorption performance

Abstract

This study aimed to evaluate the sound absorption performance depending on surface finishing of the hardwood cross-section. The sound absorption performance of wood cross-sections was evaluated after band saw cutting, sandpaper polishing, and staining. The sound absorption performance was best following the band saw cutting and no other treatment. On the other hand, stain blocked the pores and decreased the sound absorption performance. This study suggests that finishing methods that preserve the integrity of vessels need to be considered when using wood as a sound-absorbing material.

Investigation of Sound Absorption Ability of Hinoki Cypress (Chamaecyparis obtusa) Cubes

“…The polished treatment hinders the sound absorption effect because it blocks the pores. If the cube cross-sections were not polished, the pores of the surface would have contributed to the improvement of the sound absorption performance (Jang and Kang, 2022b). As mentioned in the introduction section, the sound absorption performance is more likely to be better in hardwood species where vessels are developed (Jang and Kang, 2021a, 2021b, 2021c, 2021d, 2021e, 2021f, 2022a, 2022c.…”