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All Journal Jurnal Informatika dan Teknik Elektro Terapan JURNAL FISIKA PAPUA
Risdianto, Anauta Lungiding Angga
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Computer Science & IT Decision Sciences, Operations Research & Management Education Electrical & Electronics Engineering Energy Physics

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Analysis of the Effect of Sound Dampening on Ship Engines Based on Tofu Dregs Composite Material (Glycine Max (L) Merill) Wijaya, Belqis Risky; Ilmah, Aurista Miftahatul; Risdianto, Anauta Lungiding Angga; Prasetyo, Taufan; Iswidodo, Windra; Sahari, Sahari
Jurnal Fisika Papua Vol. 3 No. 2 (2024): Jurnal Fisika Papua
Publisher : Universitas Cenderawasih

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31957/jfp.v3i2.197

Abstract

Noise in the engine room of a ship is a significant problem that can affect the health and comfort of crew members. This study aimed to evaluate the potential of tofu dregs as a sound insulation material in the form of a composite of carbon black and talak duco. The research method included making composite specimens with variations in composition, followed by testing the sound absorption coefficient using the impedance tube method. The results showed that the specimen with 30% tofu dregs, 45% carbon black, and 25% talak duco produced the highest sound absorption coefficient of 0.24. These findings show that tofu dregs have potential as an environmentally friendly and economical sound insulation material and can be used to reduce noise in ship engine rooms. This study contributes to the development of natural fiber-based insulation materials in the maritime industry.
APPLICATION OF NUMERICAL MODELING TO PIPE LEAKS IN FLUID FLOW Ilmah, Aurista Miftahatul; Syarifuddin, Arief; Risdianto, Anauta Lungiding Angga
Jurnal Informatika dan Teknik Elektro Terapan Vol. 12 No. 1 (2024)
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jitet.v12i1.3954

Abstract

Pipes are a medium used to move flowing fluids and are very dependent on pressure and speed. Leaks in pipes can cause physical loss of water. This can be caused by many things, one of which is a leak caused by a hole in the pipe which can disrupt the flow of water so that the flow of water or fluid will change, including the pressure and speed. A fluid flow can be visualized using simulation or mathematical modeling using finite differences. By using the GNU Octave application, namely numerical computing which can be accessed for free without a license which is used as data visualization, it can provide an overview of fluid flow including the occurrence of leaks in pipes, namely by visually representing the state of fluid flow when a leak occurs in a pipe. With this visualization, a fluid flow pattern is produced where leaks occur at several different points. From the research results, it was found that the pipe before it got a leak would be laminar, but when it got a leak, the fluid flow would become a fluid flow that switched to transitional fluid flow or turbulence. Apart from that, the placement of coordinate variations slightly affects the fluid flow line
Co-Authors Aurista Miftahatul Ilmah Chin, Jacky Prasetyo, Taufan Sahari Sahari Saputra, Rahmad Surya Hadi Syarifuddin, Arief Thohirin, Muh Wijaya, Belqis Risky Windra Iswidodo