PENGARUH FRAKSI VOLUME SERBUK TONGKOL JAGUNG TERHADAP KUALITAS KOMPOSIT PAPAN AKUSTIK

ADIL, MUHAMMAD (2022) PENGARUH FRAKSI VOLUME SERBUK TONGKOL JAGUNG TERHADAP KUALITAS KOMPOSIT PAPAN AKUSTIK. Skripsi thesis, Institut Teknologi Dirgantara Adisutjipto.

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Abstract

The presence of machines in the industrial field often gives the effect of sound noise. For such noise reduction purposes, silencer material is needed. The sound damping material used can come from synthetic fibers, particles, and natural fibers. By utilizing composite technology and special treatment, corn cob powder is used as a composite that performs to dampen sounds. The research method used is the Hand Lay-Up method. This study was conducted using corn cob powder fillers using variations in filler volume fractions of 0%, 45%, 55%, and 65%. The results obtained from the study, namely the addition of corn cob powder to epoxy resin could increase the ability to attenuate the sound. The best damping ability was found in a composite with the 65% corn cob powder with a Noice Absorption Coefficient (NAC) value = 0.275 at the frequency of 160 Hz, according to ISO 11654:1997 standards. In this test, the ideal composite material used as a sound-cancelling material was a composite with corn cob powder of 65% and for the best bending strength at a variation of 65% corn cob powder of 17.91 MPa.

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