Review Pengaruh Ketebalan Serat Alam Terhadap Absorpsi Suara

Wikananindita, Daniel Arya (2020) Review Pengaruh Ketebalan Serat Alam Terhadap Absorpsi Suara. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Kebisingan dapat mempengaruhi kenyamanan saat berkendara dan di dalam suatu ruangan. Penyerap suara berbasis serat alam merupakan material yang digunakan dalam menghadapi masalah tersebut. Ketebalan meruapakan faktor yang mempengaruhi nilai absorpsi suara, sehingga review jurnal ini bertujuan untuk menganalisis pengaruh ketebalan serat alam terhadap absorpsi suara. Material serat alam yang digunakan adalah serat kelapa sawit, wol, dan kenaf. Berdasarkan hasil dari review jurnal, didapatkan kesimpulan bahwa ketebalan yang semakin meningkat akan meningkatkan nilai absorpsi suaranya. Porositas dan kekasaran serat juga menentukan pada beberapa penelitian, sehingga nilai α tertinggi tidak bergantung pada kenaikan ketebalan serat alam. Setiap jenis serat alam memiliki batas ketebalan tertentu untuk mencapai nilai α tertinggi pada frekuensi 0 – 2000 Hz. Range terbaik ketebalan dan nilai α pada setiap jenis serat alam yaitu serat kelapa sawit (16 – 50 mm dan 0,6 – 0,97), serat kenaf (20 – 60 mm dan 0,57 – 0,99), dan serat wol (12-100 mm dan 0,7 – 0,97). ======================================================================================Noise can effect comfort while driving and when in a room. To reduce this noise, sound absorbing material is used. Natural fiber-based sound absorber is a material that is being developed in dealing with these problems. This review writing does not use the experimental research method, but uses the paper review method. Thickness is a factor that influences the value of sound absorption, so this paper review aims to analyze the effect of natural fiber thickness for sound absorption. Natural fiber material used in this paper review is oil palm, wool, and kenaf. Based on the results of a journal review, it was concluded that increasing thickness will increase the value of sound absorption (α). Porosity and roughness of the fiber also determine in several studies, so that the highest α doesn’t depend on increasing the thickness of natural fibers. Each type of natural fiber has a certain thickness limit to reach the highest α value at the frequency 0 - 2000 Hz. The best range of thickness and value of α for each type of natural fiber are palm oil fibers (16 - 50 mm and 0.6 - 0.97), kenaf fibers (20 - 60 mm and 0.57 - 0.99), and wool fibers (12-100 mm and 0.7 - 0.97).

Item Type: Thesis (Undergraduate)
Uncontrolled Keywords: Kenaf fiber, ketebalan, koefisien absorpsi suara, oil palm fiber, serat kelapa sawit, serat kenaf, serat wol, thickness, wool fiber
Subjects: Q Science > QC Physics > QC173.4.C63 Composite materials
Q Science > QC Physics > QC221 Acoustics. Sound
Q Science > QD Chemistry > QD117 Absorption
Divisions: Faculty of Industrial Technology and Systems Engineering (INDSYS) > Material & Metallurgical Engineering > 28201-(S1) Undergraduate Thesis
Depositing User: Daniel Arya Wikananindita
Date Deposited: 12 Aug 2020 05:19
Last Modified: 12 Aug 2020 05:19
URI: http://repository.its.ac.id/id/eprint/77623

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