SIFAT PENYERAPAN DAN ISOLASI SUARA PAPAN WOL BERKERAPATAN SEDANG-TINGGI DARI BEBERAPA KAYU CEPAT TUMBUH
ABSTRACT: The use of modern
devices and human activity today have increased noise problem. The applicaton
of acoustic panels in building construction could be as an alternative to
overcome this problem. The purpose of this study was to investigate acoustical
properties of sound absorption coefficient and sound transmission loss from
wood wool or excelsior board. Three fast growing species, sengon (Paraserianthes
falcataria), african wood (Maesopsis eminii), and mangium (Acacia mangium)
lumbers were processed to obtain wool particles. Two different categories of
board density and types of resins were used in this study. Sound absorption
coefficient was determined using the impedance tube method, while that for the
determination of transmission loss based on the reverberation room method. The
results showed that the board density of 0.8 g/cm3 had good sound absorption
for low and high frequencies compared with board of 1.0 g/cm3. In the medium
frequencies those boards reflected the sound. Wood wool cement bonded board was
good in sound absorption for high frequency. In the range low to high
frequencies, the boards with isocyanate adhesive were good in transmission loss
value compared with cement bonded boards. Meanwhile, the boards with density of
1.0 g/cm3 possessed transmission loss value higher than board of 0.8 g/cm3.
Keywords: acoustic panel, wood
wool board, fast growing species, sound absorption, transmission loss
Penulis: Lina KARLINASARI,
Dede HERMAWAN, Akhiruddin MADDU, Bagus MARTIANTO
Kode Jurnal: jpkehutanandd110042
