COMPOSITE VOICE-ABSORBING MATERIALS MADE OF POLYESTER-REINFORCED PARTICLES WASTE GLASS PLASTIC AD BIOCOMPOSITE FIBER

Natural fiber as a sound-absorbing biocompisite material is believed to not only reduce noise pollution but also absorb heat. There are many underutilized coconut husks, which so far the use of husks conventional. The focus this research find right solution in well composite engineering for technological purposes. method will pure experiments using controlled specimens mechanical Engineering laboratory ITB, including mechanicals tests, soundproofing. results he tensile test strength largest found volume fraction 25% with value 59.072 Mpa, followed by 20% 59.025 15% 56.736 10% 56.807 5% 53.736. and soundproof frequency 250 Hz – 2000 at fraction, it has an absorption coefficient 0,03, 0.18, 0.18. 20 0.22, 0.28.