Analisa Insulasi Kebisingan Interior pada Kereta LRT Palembang Berdasarkan Nilai Sound Transmission Class

Putri, Mayang Ananda (2019) Analisa Insulasi Kebisingan Interior pada Kereta LRT Palembang Berdasarkan Nilai Sound Transmission Class. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Kereta api merupakan salah satu moda transportasi massal yang murah, efisien serta terjangkau untuk mengatasi kemacetan yang ada di Indonesia. Akan tetapi, kereta api juga memiliki masalah kebisingan yang dapat mengganggu kenyamanan penumpang di dalamnya. Bising kereta api disebabkan oleh berbagai sumber. Penelitian ini membahas mengenai analisa insulasi kebisingan interior pada LRT Palembang berdasarkan nilai sound transmission class yang tujuannya adalah mengurangi tingkat kebisingan yang dihasilkan sehingga tidak berdampak negatif bagi kesehatan penumpang di dalam kereta tersebut. Salah satu parameter untuk menilai kualitas serap bunyi suatu material adalah nilai STC. Berdasarkan hasil pengukuran, simulasi dan perhitungan menurut kondisi existing, didapatkan bahwa nilai STC pada bagian penyusun LRT Palembang yaitu pintu dan jendela masih belum memenuhi standar yaitu di bawah 30. Kemudian dilakukan rekomendasi bahan berdasarkan analisa STC dengan perhitungan dan simulasi. STC rekomendasi berdasarkan simulasi yaitu pada bagian pintu sebesar 31 (untuk material AA6063 T5) dan 30 (untuk material Tempered Glass), pada bagian jendela sebesar 31, dan side wall sebesar 43, sedangkan menurut perhitungan didapatkan nilai STC pada bagian pintu sebesar 29 (untuk material AA6063 T5) dan 27 (untuk material Tempered Glass), pada bagian jendela sebesar 33, dan side wall sebesar 47. Hasil analisa menunjukkan bahwa pada frekuensi 250 Hz masih belum memenuhi kondisi standar pengurangan bising yang dibutuhkan, sedangkan pada frekuensi 500 – 4000 Hz, sebagian besar sudah memenuhi kondisi standar menurut permenhub. Rekomendasi material antara simulasi dan perhitungan menunjukkan perbedaan yang tidak jauh.
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Train is one of public transportation which are low price, efficient, and affordable, to overcome the traffic jam in Indonesia. But, train also has noise problems that can disturb the comfortable of passengers. Noise of train is caused by various sources. This study discussed about the analysis of interior noise insulation in LRT Palembang based on the value of sound transmission class to reduce the noise level so that it does not have negative effect of passanger’s health in the train. One of parameter to evaluate the sound absorbency quality of a material is the STC value. Based on the results of measurements, simulations and calculations according to the existing conditions, it was found that the STC values in the LRT Palembang in doors and windows part is still not fit the standards of below 30. Then, material recommendations were made based on STC analysis with calculations and simulations. STC recommendations based on simulations, at the door part are 31 (for AA6063 T5 material) and 30 (for Tempered Glass material), at the window part is 31, and side wall is 43, while according to calculations, the STC value of the door are 29 (for material AA6063 T5) and 27 (for Tempered Glass material), at the window part is 33, and side wall is 47. Material recommendations between simulations and calculations are not significantly different. The analysis shows that at a frequency of 250 Hz it still does not meet the required standard noise reduction conditions, while at a frequency of 500-4000 Hz, most have met the standard conditions according to the Minister of Transportation.

Item Type:	Thesis (Undergraduate)
Additional Information:	RSF 620.23 Put a-1 2019
Uncontrolled Keywords:	bising kereta api, sound transmission class
Subjects:	Q Science > QC Physics > QC221 Acoustics. Sound T Technology > TD Environmental technology. Sanitary engineering > TD892 Noise control T Technology > TF Railroad engineering and operation > TF4 Railroads--Automation.
Divisions:	Faculty of Industrial Technology and Systems Engineering (INDSYS) > Physics Engineering > 30201-(S1) Undergraduate Thesis
Depositing User:	Mayang Ananda Putri
Date Deposited:	13 Dec 2021 01:40
Last Modified:	13 Dec 2021 01:40
URI:	http://repository.its.ac.id/id/eprint/61776

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