Yoessa, Muhammad Ilham (2019) Analisa Pengaruh Perlakuan Alkalisasi Serat dan Penambahan Nanoslulosa Terhadap Nilai Sound Transmission Loss Komposit Poliester/Serat Rami/Nanoselulosa Untuk Aplikasi Material Akustik. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Kebisingan adalah bunyi yang tidak diinginkan yang dapat mengganggu kesehatan manusia dan kenyamanan lingkungan. Kebisingan dalam masyarakat perkotaan umumnya berasal dari kebisingan mesin kendaraan bermotor yang dapat mengganggu pengendara. Oleh karena itu, perlu adanya material akustik yang dapat mengurangi intensitas bunyi kebisingan mesin kendaraan bermotor. Komposit poliester berpenguat serat rami dan nanoselulosa merupakan sebuah alternatif material akustik yang dapat digunakan pada dashboard. Tujuan dari penelitian ini adalah untuk menganalisa pengaruh perlakuan alkalisasi serat rami dan penambahan nanaoselulosa terhadap nilai Sound Transmission Loss (STL), sifat fisik dan kekuatan impak dari komposit. Penambahan komposisi nanoselulosa sebanyak 0%, 1%, dan 3% menjadi variasi dalam penelitian ini. Karakterisasi yang diterapkan pada penelitian ini yaitu uji SEM, uji FTIR, uji Sound Transmission Class, uji Impak, uji Absorpsi Air dan uji Densitas. Dari hasil pengujian, nilai STL tertinggi pada frekuensi di bawah 350 Hz / pada rentang frekuensi kebisingan mesin diesel terdapat pada komposit 0% Nanoselulosa / Serat Rami Non Alkalisasi dengan nilai STL sebesar 68,52 dB. Harga Impak tertinggi didapatkan pada komposit 1% Nanoselulosa / Serat Rami Alkalisasi dengan nilai sebesar 4,005 KJ/m2. =================================================================================================================================
Noise is an unwanted sound that could cause human health and environmental comfort problems. Noise in urban communities generally comes from the noise of motorized vehicles that can disturb drivers. Therefore, it is necessary to have acoustic material that can reduce the intensity of engine noise. Polyester reinforced ramie fiber and nanocellulose composites are an alternative acoustic material that can be used on the dashboard. The purpose of this study was to analyze the effect of alkalization process on hemp fiber and the addition of nanaocellulose to the value of Sound Transmission Loss (STL), physical properties and impact strength of composites. In this study, the variations of nanocellulose addition on the composition was 0%, 1%, and 3%. Characterization applied in this research is SEM test, FTIR test, Sound Transmission Class test, Impact test, Water Absorption test and Density test. From the test results, the highest STL value at frequencies below 350 Hz / in the range of diesel engine noise frequency was found in the 0% Nanocellulose / Non-Alkaline Hemp Fiber composite with STL value of 68.52 dB. The highest impact value was obtained from 1% Nanocellulose / Alkaline Ramie Fiber composite with a value of 4.005 KJ / m2.
| Item Type: | Thesis (Other) |
|---|---|
| Additional Information: | RSMt 620.118 Yoe a-1 2019 |
| Uncontrolled Keywords: | Alkalisasi, Komposit, Material Akustik, Nanoselulosa, Serat Rami, Sound Transmission Loss. |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) > TA418.9 Composite materials. Laminated materials. T Technology > TL Motor vehicles. Aeronautics. Astronautics > TL240.5 Composite materials |
| Divisions: | Faculty of Industrial Technology and Systems Engineering (INDSYS) > Material & Metallurgical Engineering > 28201-(S1) Undergraduate Thesis |
| Depositing User: | Muhammad Ilhan Yoessa |
| Date Deposited: | 08 Oct 2024 07:37 |
| Last Modified: | 08 Oct 2024 07:37 |
| URI: | http://repository.its.ac.id/id/eprint/65577 |
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