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Rekayasa Mekanika: Jurnal Ilmiah Teknik Mesin
Published by Universitas Bengkulu
ISSN : 25974254     EISSN : 28292855     DOI : https://doi.org/10.33369/rekayasamekanika
Core Subject : Science, Engineering,
Control & Systems Engineering Energy Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering
Rekayasa Mekanika is scientific journal on mechanical sciences and engineering field, either pure or inter disciplinary works. This journal is a continuation of Rekayasa Mekanik which changed its name since April 2022. This journal publishes 6 articles for each issue, April and October. Starting April 2025, this journal publishes 10 articles. Authors are cordially invited to submit his/her research, review or monograph papers in English or Indonesian.
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 105 Documents
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ANALISIS RESPON DAYA PEMANAS PADA FASILITAS HEATING CONTROL Prasetya Hariyanto, Kevin; Zuliantoni; Witanto, Yovan; Valentina, Pricylia
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.v9i2.40634

Abstract

Currently the Fassip-01 strand to Fassip-07 uses a control system of two positions (on-off) in controlling heaters to maintain stopping conditions when experiments are carried out. Nuclear Termofluidal System Research Group Develops the Heating Control Facility that functions as a Heating Control System Test Facility using PID system control (proportional integral derivative) to overcome the problem of existing residual heat due to the use of the Kend system This test was conducted to find out the analysis of 4 heater power before the experiment took place and analyzed RTM (Risetime) Setpoint 40.45, and 50 degrees. In this experiment the method used was an experiment so that the results were obtained in the form of accuracy values, heater positions, high energy consumption, poor power settings, large residual heat and time difference ratio in each setpoint.
The ANALISIS KEKUATAN CASE FLOW WATER METER DENGAN MATERIAL POLYVINYL CHLORIDE RIGID MENGGUNAKAN SOLIDWORK Wira Guna, Tezar; Hestiawan, Hendri; Hanif Fakhrurroja, Hanif
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.v9i2.40641

Abstract

The flow water meter case is an additional structure that protects the meter from mechanical damage, corrosion, and other external environmental influences. In its development, the design of the casing used as a protector must consider various aspects, such as ease of installation, and the sustainability of the use of the material. The purpose of this study is to design a flow water meter casing and calculate the distribution of von mises stress, strain, and displacement under axial loading by simulating a flow water meter casing made of rigid polyvinyl chloride (rigid PVC). In the design process, the casing body was designed using Solidwork 2024 software with predetermined dimensions of 67.8 mm in length, 53.38 mm in width, and 58.5 mm in height using an axial loading type of 100 N placed on the casing body with a clamp support type. The results showed that under axial loading, the maximum value of von mises stress was 11.9 MPa, displacement was 0.389 mm, and strain was 0.0018.
ANALISIS DINAMIK PADA KOMPONEN FLAP ARMS (FAIRING) PESAWAT NC 212 DI PT. DIRGANTARA INDONESIA Yanuardi, Endi; Suryadi, Dedi; Supardi, Nurul Iman
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.v9i2.41627

Abstract

Airplanes are one of the safest modes of transportation, to ensure this safetyness an analysis is needed to understand the response of the aircraft components. One of them is the fairing on the flap arms, which is part of the aircraft wing structure, where this component supports the movement of the aircraft's flaps. Fairing will experience loading during takeoff, top speed, and landing. One of the loads that occur on the fairing is air pressure. The use of the finite element ethod (FEM) as a method to determine the response of the fairing after being subjected to dynamic loading. In the take-off condition, the total deformation is  mm and the equivalent stress is 5,17 Pa. In the top speed condition, the total deformation is   mm and the equivalent stress is 199,04 Pa. Whereas in the landing condition, the total deformation is  mm and the equivalent stress is 38,812 Pa.
MAINTENANCE PADA VERTICAL RAW MILL CK-310 TIPE ROLLER MILL PLANT - 10 Nurbaiti, Nurbaiti; Hoten, Hendri Van
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.v9i2.45323

Abstract

A vertical raw mill is one of the main tools in cement production, which functions as a material grinder measuring from 5-7 cm to 90 microns. The tool also performs in the drying process of raw materials to reduce the water content before entering the suspension preheater section. The maintenance process on the vertical raw mill is carried out while the machines are operating. The maintenance is used to prevent and predict the production machine. The method is inspection using an infrared thermometer and vibrascanner. Test results show that the vertical raw mill can operate normally.
RANCANG BANGUN ALAT PINDAH PASIEN MENGGUNAKAN SISTEM REM ELEKTRIK Mulyana; Akbar Saputra, Fauzi; Muhida, Riza; Riza, Muhammad; Surya, Indra; Kunarto; Muhamad, Zein; Saputro, Harjono; Pratowo, Bambang
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.v9i2.45557

Abstract

The mobility of patients with physical limitations is a major challenge in healthcare, particularly in the process of transferring from bed to wheelchair, toilet, or examination table. Based on data from BPS (2023) and Regsosek (2023), the number of people with disabilities and the elderly in Indonesia continues to increase, requiring innovation in assistive devices that are safe, ergonomic, and easy to use. This study designed a transfer chair with a solenoid-based electric brake system to improve the efficiency and safety of the patient transfer process. The research method included needs identification, structural and brake system design, fabrication, and functional testing. The calculation results show that the brake system with four 12V DC solenoids produces a total pressing force of 80 N and a braking torque of 6.10 Nm. Energy consumption for 5 minutes is 1.99 Wh with a minimum battery capacity requirement of 166 mAh. The static stability coefficient of 1.14 indicates the device is stable during use. The device is able to withstand static loads of up to 90 kg without brake function disruption and is in accordance with anthropometric data for the Indonesian population. This design contributes to the development of medical devices that are affordable and responsive to the needs of patients and medical personnel.
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.
ANALISA BEBAN STATIS STRUKTUR KOMPOSIT BERDASARKAN ORIENTASI ARAH SERAT PADA KOMPONEN FAIRING FLAP ARMS PESAWAT NC-212 MENGGUNAKAN SOFTWARE ANSYS Ardiansyah, Muhamad Rizki; Suryadi, Dedi; Hestiawan, Hendri
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.v10i1.42062

Abstract

The advancement of composite material technology has significantly contributed to enhancing aircraft structural performance, komponen icularly in terms of weight efficiency and mechanical resistance. This study aims to analyze the influence of fiber orientation on the static response of a composite structure applied to the fairing flap arms component of the NC-212 aircraft. The analysis was conducted through simulation using ANSYS Workbench 2025 based on the Finite Element Method (FEM). The material used is glass fiber fabric/epoxy resin type 181 with various fiber orientation configurations, including (0°, 0°, 0°, 0°), (90°, 90°, 90°, 90°), (45°, -45°, 45°, -45°), (0°, -45°, 45°, 0°), (0°, 90°, 90°, 0°), and (90°, -45°, 45°, 90°). The results indicate that the fiber orientation of (45°, -45°, 45°, -45°) produces the highest Total deformasiof 0.091405 mm and the highest Von Mises stress of 89.132 MPa, along with the highest safety factor of 4.4791. Conversely, the (0°, -45°, 45°, 0°) orientation shows the lowest deformation at 0.07997 mm. These findings emphasize that fiber orientation significantly affects the mechanical behavior of composite structures. Diagonal fiber configurations tend to result in higher deformation and stress levels compared to unidirectional or perpendicular orientations.
ANALISIS PENENTUAN UMUR SISA (REMAINING LIFE ASSESMENT) DAN LAJU KOROSI PADA TANGKI TIMBUN PERTASOL CA T-130 DI UNIT KILANG PPSDM MIGAS CEPU Brata, Chika Vierenna; Hestiawan, Hendri; Jamaludin
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.v10i1.44539

Abstract

Storage tanks are important infrastructure in the oil and gas industry as a place to store fluids, including refined products such as Pertasol CA. Over time, tanks can experience material degradation due to corrosion, which can threaten operational safety if not carried out regularly. The purpose of conducting a Remaining Life Assessment (RLA) analysis study on storage tanks at the Cepu PPSDM Migas Refinery Unit is to determine the remaining life of the tank based on the material thickness measured using the Ultrasonic Thickness Gauge (UTG) method and calculate the corrosion rate based on API 653 and API 575 standards. Measurements were carried out on the shell (wall) and roof (roof) of the tank, with the results showing that the plate thickness is still above the minimum limit. The highest corrosion rate was found in course 1 at 0.1111 mm/year, with a remaining tank life of approximately 5.04 years. Meanwhile, course 2, course 3, and roof sections each have a remaining life of 19.09 years, 28.37 years, and 14.41 years, respectively. The analysis results indicate that the tank is still suitable for use, but requires regular inspection and maintenance, particularly on parts with high corrosion rates. This research is expected to serve as a reference for maintenance planning and improving the operational safety of storage tanks in the oil and gas industry.
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.
ANALISIS FILLING TIME DAN INJECTION PRESSURE UNTUK PRODUK CASE LINK FLOW WATER METER BERDASARKAN POSISI GATE MENGGUNAKAN METODE CAD Sandy, Rasidiq Karunia; Nuramal, Agus; Nizam, Ahmad
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.v10i1.44840

Abstract

This research discusses the analysis of filling time and injection pressure on ABS (Acrylonitrile Butadiene Styrene) case link flow water meter products with variations in gate position using Computer-Aided Design (CAD) methods. The selection of the appropriate gate position significantly affects the efficiency of the injection process and the quality of the mold results. In this study, several gate position configurations are analyzed to determine their impact on filling time and injection pressure during the molding process. Simulations were conducted using CAD software integrated with a plastic injection analysis module. The analysis results indicate that a strategic gate position can minimize filling time and reduce Injection pressure up to 18% and reducing filling time by up to 12%, compared to other gate positions, thus increasing production process efficiency and reducing the risk of product defects. This research provides recommendations for the optimal gate position that can be applied in the production process of case link flow water meters to achieve better quality and productivity.

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