Desain Sistem Peredam Kebisingan pada Kamar Mesin, Studi Kasus KM. Natuna Express

Rayhananda, Adhimas Tegar (2025) Desain Sistem Peredam Kebisingan pada Kamar Mesin, Studi Kasus KM. Natuna Express. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Masalah kebisingan di kapal perlu diperhatikan untuk menjaga kesehatan awak kapal. International Maritime Organization (IMO) melalui komite MSC dalam aturan MSC 91/22/Add.1 Annex 1 Chapter 4.2 menetapkan ambang batas kebisingan maksimum sebesar 110 dB. Namun, ruang mesin KM. Natuna Express menunjukkan tingkat kebisingan sebesar 112,53 dB yang melebihi batas ditetapkan. Salah satu sumber utama kebisingan tersebut berasal dari mesin utama dan generator. Upaya reduksi kebisingan dilakukan dengan menambahkan peredam suara atau sound barrier dengan bentuk peredam yang umum digunakan dalam akustik yaitu peredam berbentuk piramid, sedangkan material peredam berbahan Rockwool dipilih karena memiliki ketahanan panas dan performa penyerapan suara yang baik. Penelitian ini mensimulasikan penggunaan peredam piramid berbahan Rockwool di ruang mesin kapal menggunakan metode Finite Element Analysis (FEA). Simulasi dilakukan dengan variasi ketebalan peredam (5 cm dan 10 cm) serta 5 variasi tata letak berdasarkan pemetaan kontur kebisingan uji langsung. Hasil simulasi menunjukkan bahwa ketebalan 10 cm lebih efektif dalam mereduksi kebisingan dengan nilai noise reduction sebesar 2.47 dB, sedangkan berdasarkan 5 variasi tata letak menghasilkan nilai noise reduction berturut-turut sebesar 3.41 dB, 1.20 dB, 5.03 dB, 4.13, dan 7.96 dB, namun jika dipertimbangkan secara ekonomis dan didasarkan dengan aturan IMO variasi keempat adalah variasi paling efektif karena memiliki nilai benefit cost ratio sebesar 5,61.
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Noise issues on ships must be addressed to safeguard the health of crew members. The International Maritime Organization (IMO), through the Maritime Safety Committee (MSC) under regulation MSC 91/22/Add.1 Annex 1 Chapter 4.2 has established a maximum allowable noise level of 110 dB. However, measurements taken in the engine room of the KM. Natuna Express indicate a noise level of 112.53 dB, which exceeds the specified threshold. One of the primary sources of this excessive noise is the main engine and the generator. To mitigate this problem noise reduction efforts were undertaken by installing acoustic barriers. A commonly used acoustic absorber desain is the pyramid shaped absorber, while rockwool was selected as the damping material due to its high thermal resistance and excellent sound absorption performance. This study simulates the application of pyramid-shaped rockwool absorbers in the ship's engine room using the Finite Element Analysis (FEA) method. The simulation was conducted using two thickness variations (5 cm and 10 cm) and five layout configurations based on direct noise contour mapping. The simulation results indicate that a thickness of 10 cm is more effective in reducing noise, achieving a reduction of 2.47 dB. Moreover, the five layout variations resulted in noise reduction values of 3.41 dB, 1.20 dB, 5.03 dB, 4.13 dB, and 7.96 dB, respectively. Although the fifth variation produced the highest noise reduction, the fourth variation is considered more efficient when evaluated from an economic perspective and in accordance with IMO regulations, as it yields a Benefit-Cost Ratio of 5.61.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	FEA, ship noise, pyramid absorber, engine room, rockwool, acoustic simulation, kebisingan kapal, peredam piramid, ruang mesin, rockwool, simulasi akustik.
Subjects:	V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering > VM297 Ships Designs and drawings V Naval Science > VM Naval architecture. Shipbuilding. Marine engineering > VM731 Marine Engines
Divisions:	Faculty of Marine Technology (MARTECH) > Naval Architecture and Shipbuilding Engineering > 36201-(S1) Undergraduate Thesis
Depositing User:	Adhimas Tegar Rayhananda
Date Deposited:	08 Aug 2025 07:05
Last Modified:	08 Aug 2025 07:05
URI:	http://repository.its.ac.id/id/eprint/127980

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