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All Journal JSAI (Journal Scientific and Applied Informatics) Rekayasa Mekanika: Jurnal Ilmiah Teknik Mesin Dharmakayana: Journal of scientists, engineers, educators and scientific activists related to society development
Bismantolo, Putra
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Agriculture, Biological Sciences & Forestry Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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“EFFICIENCY ANALYSIS OF 3 DIFFERENT FUEL TOWARDS GASOLINE FUEL MOTORS ON EME 35 ENGINES IN LAPAN SURVELLANCE UAV-02 (LSU-02)” Ramadhan, M. Fajar; Bismantolo, Putra; Suryadi, Dedi; Utama, Agus Bayu
Rekayasa Mekanika: Jurnal Ilmiah Teknik Mesin Vol. 8 No. 2 (2024): Oktober 2024
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/rekayasamekanika.v8i2.38341

Abstract

This study aims to analyze the efficiency of three different types of fuel on the EME 35 engine on the LSU 02 aircraft. The fuel used is Pertalite, Pertamax, and Pertamax turbo. The method used in this study was an experiment using the LSU 02 aircraft as the research object. The data is taken from measurements of fuel consumption and engine performance on each type of fuel. The analysis is carried out by comparing the efficiency and performance of the engine on each type of fuel used. The results showed that the efficiency and performance of the engine on Pertamax fuel was better than that of Pertamax turbo and Pertalite. Fuel consumption on Pertamax is more efficient than Pertalite and Pertamax turbo, so that Pertamax is more efficient in fuel use. In addition, engines on Pertamax fuel have better performance with greater power and are more stable compared to Pertalite and Pertamax turbo. Therefore, it is recommended to use Pertamax fuel in the EME 35 engine on the LSU 02 aircraft to achieve better efficiency and performance.
ANALISIS TEKANAN HIDROLIK TERHADAP OIL LOSSES PADA MESIN PRESS KAPASITAS 15 TON Tarigan, Daniel Elieser; Zuliantoni; Bismantolo, Putra
Rekayasa Mekanika: Jurnal Ilmiah Teknik Mesin Vol. 9 No. 1 (2025): April 2025
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/rekayasamekanika.v9i1.38827

Abstract

In palm oil processing, there are five main stages: sterilization, threshing, digestion, pressing, and clarification. Among these, the pressing stage is one of the most critical. The pressing machine is used to separate crude oil from the fibers in the fruit pulp. This machine includes a pressing component, commonly referred to as the cone cage, which is operated by a hydraulic mechanism. The palm oil pressing process plays a crucial role in determining the success of processing fresh fruit bunches (FFB), as significant oil losses often occur during this stage. One of the key factors affecting these losses is the value of the hydraulic pressure. This study aims to investigate the effect of hydraulic pressure on oil losses in fibers for each pressing machine and to understand how the pressing machine operates. To analyze the hydraulic pressure variable and oil losses in fibers, observations were conducted by monitoring the pressure gauge on each pressing machine. The oil losses in fibers were measured through laboratory testing at the factory. The collected data were then compared. The results of this study indicate that hydraulic pressure has a significant effect on oil losses in the fibers of the pressing machine. At a hydraulic pressure of 49 bar, the smallest oil loss was recorded at 3.28%, whereas at a hydraulic pressure of 40 bar, the highest oil loss was observed at 4.42%. This demonstrates that higher hydraulic pressure results in lower oil losses, and vice versa.
INSTALASI PHOTO ELECTRIC SENSOR SEBAGAI PENUNJANG PENGEMBANGGAN SISTEM TRANSFER PNEUMATIC REAKTOR KARTINI BERBASIS PLC Ananda Putra, Irvan; Haryo Sadewo, Prasetyo; Bismantolo, Putra
Rekayasa Mekanika: Jurnal Ilmiah Teknik Mesin Vol. 9 No. 2 (2025): Oktober 2025
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/rekayasamekanika.v9i2.39594

Abstract

The installation of photoelectric sensors as a supporting element for the development of a pneumatic transfer system based on Programmable Logic Controller (PLC) in the Kartini Reactor aims to enhance efficiency and accuracy in operational processes. This study integrates photoelectric sensors to detect capsules in the pneumatic transfer system, which previously required manual intervention. The sensors send signals to the PLC, which controls actuators automatically. The system was optimized through installation, calibration, and testing, involving the measurement of capsule speeds for both empty capsules and those containing 3-gram samples. Results indicate significant operational efficiency improvements, with average transfer speeds of 12.41 m/s for empty capsules and 11.76 m/s for filled ones. This integration significantly contributes to advancing reactor automation systems based on PLC technology.
Sosialisasi Ilmu Mitigasi Tsunami Bagi Masyarakat Pesisir dan Dataran Rendah di Pagar Dewa angky, puspawan; Gunawan, Agustin; FA, A. Sofwan; Razali, Makmun Reza; Bismantolo, Putra; Zuliantoni, Zuliantoni
Dharmakayana Vol 2 No 2 (2025): November : Dharmakayana: Journal of scientists, engineers, educators and scientif
Publisher : Program Studi Teknik Mesin, Fakultas Teknik Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/dk.v2i2.45821

Abstract

Bengkulu City is a region with a high risk of tsunami due to its location adjacent to the Indian Ocean and its position in an active subduction zone. The low level of public knowledge regarding disaster mitigation increases the potential for casualties in the event of a tsunami. This community service activity aimed to enhance the understanding, awareness, and preparedness of residents in Pagar Dewa Village, Selebar District, Bengkulu City, regarding tsunami hazards through mitigation-based education and socialization. The implementation methods included socialization (counseling), interactive discussion and dialogue, presentation of evacuation routes, and information on prevention and emergency response. The results showed a significant increase in public knowledge and preparedness, demonstrated by participants’ ability to recognize early tsunami signs and take appropriate evacuation actions. Residents also showed high enthusiasm and emphasized the importance of ongoing training to maintain mitigation awareness. This activity successfully built synergy between the university, local government, and the community in reducing disaster risks in coastal and lowland areas around Bengkulu City. Therefore, tsunami mitigation education is a strategic step toward creating a disaster-resilient community and strengthening readiness for future natural threats.
PROSES FABRIKASI KOMPONEN WALKING BEAM PADA NEW PUMPING UNIT Wijaya, Bayu Andika; Supardi, Nurul Iman; Bismantolo, Putra
Rekayasa Mekanika: Jurnal Ilmiah Teknik Mesin Vol. 10 No. 1 (2026): April 2026
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/rekayasamekanika.v10i1.41542

Abstract

The oil and gas eguipment business unit is engaged in the manufacture of pumping units, in its production process, oil and gas equipment is required to run as effectively and efficiently as possible so that it can produce high quality products. In the process of making a pumping unit there are several processes, one of which is the fabrication of the walking beam. This report describes the fabrication process of the walking beam component for the new pumping unit. The study aims to thoroughly understand the stages of production, the operation of the main machines, and the obstacles that arise during the fabrication process. The production process begins with component design using CAD software, followed by cutting ASTM A36 steel material with a CNC flame cutting machine, tack welding with an H-Beam assembling machine, and main welding using an H-Beam gantry welding mMachine. The next stage includes straightening process with H-Beam flange straightening machine, shot blasting to clean the surface, and final painting to inhibit corrosion. This study also identified several factors inhibiting production, such as delays in material supply that affect the smoothness of the cutting process, and instability of the nozzle position during the tack welding process, which requires repeat work. Recommendations provided include improving the material management system to ensure timely availability of raw materials and the use of more stable nozzle holders to improve welding accuracy. This report is expected to be a guide to improve the efficiency and quality of component fabrication processes in the manufacturing industry, especially in the oil and gas equipment sector.
PERENCANAAN SISTEM PENGKONDISIAN UDARA ZONA 1 GEDUNG B RUMAH SAKIT UNIVERSITAS BENGKULU OLEH PT DETA DECON Karosekali, Hernan Marten; Bismantolo, Putra; Sunggoro
Rekayasa Mekanika: Jurnal Ilmiah Teknik Mesin Vol. 10 No. 1 (2026): April 2026
Publisher : UNIB Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/rekayasamekanika.v10i1.44782

Abstract

This study discusses the planning of an air conditioning system in Zone 1 Building B of Bengkulu University Hospital. The planning of an Heating, Ventilation, and Air Conditioning (HVAC) system in hospitals is crucial because it is closely related to thermal comfort, which is defined as the condition in which the human body does not feel too hot or too cold, allowing metabolism and activities to function optimally. In the hospital context, thermal comfort is not only important for patient convenience but also plays a role in supporting recovery processes, maintaining air quality, and ensuring a hygienic environment in accordance with health standards. The aim of this study is to calculate the cooling load using the ASHRAE method and compare it with simulation results, as well as to evaluate whether the installed cooling capacity meets the actual requirements. The results show that the total cooling load based on the ASHRAE method is 163,142.17 BTU/h, while the simulation application produces 174,225 BTU/h. The installed cooling capacity is 191,900 BTU/h, which indicates that the system is sufficient with a slight oversizing. This oversizing provides a safety margin but may lead to higher energy consumption if not properly controlled. These findings highlight that proper HVAC planning is essential to ensure comfort, energy efficiency, and compliance with technical regulations in hospital buildings.
Co-Authors A. Sofwan Abdul Latif Mubarok Agus Suandi, Agus Ananda Putra, Irvan Angky Puspawan Arie Vatresia Dedi Suryadi Erwinsyah, Mochamad Dava Erwinsyah FA, A. Sofwan Gunawan, Agustin Haryo Sadewo, Prasetyo Helmizar Helmizar - Hendri Hestiawan Hendri van Hoten Karosekali, Hernan Marten Kurnia Anggriani, Kurnia Nurbaiti Nurbaiti Nurbaiti Nurul Iman Supardi Okta Piani, Sri Prasetiyo, Rafi Ramadani, Dwi Ramadhan, M. Fajar Razali, Makmun Reza Shafira Sitinjak, Heryanto Sulistrionio, Sulistriono Sunggoro Tarigan, Daniel Elieser TIMUR, RIZKY Utama, Agus Bayu Utama, Ferzha Putra Wijaya, Bayu Andika Wiranto, Imam Yovan Witanto Zuliantoni, Zuliantoni