cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
Hendri
Contact Email
hestiawan@unib.ac.id
Phone
+6282289599002
Journal Mail Official
hestiawan@unib.ac.id
Editorial Address
WR. Supratman Kandang Limun
Location
Kota bengkulu,
Bengkulu
INDONESIA
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 10 Documents
 1 
Search results for , issue "Vol. 10 No. 1 (2026): April 2026" : 10 Documents clear
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.
A PROSES TUBE EXPANSION DAN SEAL WELDING PADA HEAT EXCHANGER Nuralif, Raihan Shallu; Puspawan, Angky; Gumilang, Faisal
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.v10i1.45168

Abstract

This study examines the tube expansion process in heat exchangers at PT IHI Power Service Indonesia using the heavy expand method with a pneumatic expander. As a subsidiary of Japan’s IHI Corporation, the company focuses on repair, maintenance, and fabrication for the power generation industry in Indonesia. The research aims to understand the tube expansion process, the function and operation of the expander tool, and factors that affect work quality and efficiency. The fabrication process includes technical design, material processing, assembly, and component testing. Data were obtained through direct observation, interviews, and technical documentation. Results show that the pneumatic expander improves joint quality and reliability compared to conventional methods. This expansion technique ensures tight connections between tubes and tube sheets, which is essential for heat exchanger performance. The study also highlights the importance of proper torque control and operator training in maintaining process consistency. Overall, the use of pneumatic expansion tools enhances fabrication standards and supports operational efficiency in power plant systems. The findings are expected to contribute to improving productivity at PT IHI Power Service Indonesia and serve as a reference for similar industries focused on heat exchanger fabrication and maintenance.
ANALISIS EFEKTIVITAS MESIN THRES ANALISIS EFEKTIVITAS MESIN THRESHER DENGAN METODE OVERALL EQUIPMENT EFFECTIVENESS (OEE) PADA PT. MURINI SAM SAM II Sipahutar, Yosua Adinata; Helmizar, Helmizar; Zuliantoni, Zuliantoni
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.v10i1.45297

Abstract

The palm oil industry in Indonesia plays a strategic role in the national economy. One of the important machines in the palm oil processing process is the thresher machine, which functions to separate loose fruit from the fruit bunches. This study aims to analyze the effectiveness of the Rotary Drum Stripper type thresher machine at PT. Murini Sam Sam II with a capacity of 30 tons per hour, using the Overall Equipment Effectiveness (OEE) method. The OEE method measures equipment performance based on three main parameters: Availability, Performance, and Quality. Data were collected through observations, interviews, and operational documentation during 10 days of observation (August 6–15, 2024). The analysis results showed an average Availability value of 90%, Performance of 82%, and Quality reaching 100%. The total OEE value was 73.8%, which is still below the world-class standard of 85%. The decrease in effectiveness was mainly due to variability in production speed. Therefore, improvements are needed in the aspects of preventive maintenance, operator training, and sustainable TPM implementation.
ANALISIS KONSUMSI BAHAN BAKAR SPESIFIK PADA KONDISI PEMBEBANAN MAKSIMAL Amanda, Rezza; Witanto, Yovan; Alqap, A. Sofwan F
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.v10i1.46229

Abstract

The operational performance of a Gas and Steam Power Plant (PLTGU) is largely determined by its cycle thermal efficiency. Specific fuel consumption (SFC) is a key metric that represents the ratio of total fuel consumption to generated electrical power. This study aims to analyze the SFC value and its tendency towards maximum load. The method used is quantitative by processing steady-state operational data from the central control room (CCR). Data were taken under operating conditions with natural gas fuel and maximum load. The calculation results show a very narrow and stable variation in SFC values, ranging from the lowest to 0.30769 kg/kWh at a load of 19.88 MW to the highest at 0.30967 kg/kWh at a load of 20.01 MW. Theoretically, efficiency (indicated by a decrease in SFC) should increase with increasing load. The anomalous increase in SFC at 20.01 MW at 10:00 a.m. Western Indonesian Time (WIB) is interpreted as a result of the fuel injection system's rapid response to the sudden increase in load, or the engine operating slightly outside its design efficiency range at that point. Nevertheless, the overall trend shows stable efficiency, with a tendency for SFC to decrease with increasing load, indicating the unit is capable of maintaining optimal performance under peak load conditions.
Perancangan dan Analisis Kinerja Pompa Sentrifugal dengan Konfigurasi Paralel dan Seri untuk Kebutuhan Laboratorium Teknik Mesin Kunarto, Kunarto; Azmi, Farhan Alfarizi; Muhida, Riza; Riza, Muhammad; Surya, Indra; Pratowo, Bambang; Muhamad, Zein; Saputro, Harjono; Mulyana
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.v10i1.48321

Abstract

Centrifugal pumps are the main component in pumping systems that are widely applied in industry, agriculture, and practical activities in engineering laboratories. This study aims to design and build a centrifugal pump tester with single, series, and parallel configurations as a learning medium in the Mechanical Engineering Laboratory. This tool uses two National TRANS GP-125 pump units with a discharge specification of 30 L/minute and a power of 125 W. The research method includes the stages of design, fabrication, testing, and technical calculations including total head, major and minor pressure losses, and impeller dimension analysis. The test results show that the parallel configuration increases the discharge capacity, while the series configuration is superior in producing higher heads. The system efficiency reaches 69%, still within the standard range of pump efficiency (63–84%). This study produces interactive learning media that can help students understand the working principles of centrifugal pumps and the effect of system configuration on hydraulic performance.
ANALISIS HASIL KEKUATAN TARIK SAMBUNGAN WIRE TERHADAP VARIASI KODE TERMINAL DAN UKURAN WIRE PADA PROSES CRIMPING SEMI OTOMATIS Yunanto, Irawan Tri; Mainil, Afdhal Kurniawan; Nurbaiti, Nurbaiti
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.v10i1.48701

Abstract

This study was conducted to determine the quality of crimped connections in the wire harness manufacturing sector. Three methods were used in the connection process, but this analysis only used the semi automatic crimping method, and in general, the crimping results are applied to electronic devices, therefore the quality of the conection must also be considered carefully and must comply with the crimping specifications. Therefore, the result of this test were analysed to determine the quality of the semi automatic crimping process. The quality of the crimping results is greatly influenced by the combination of terminal type, cable size, and preassure. Meanwhile, the pull force test or pull-out test is used to meanwhile, the mechanical strength of the connection. Then the maximum tensile force value obtained indicates the quality and reliability of the crimped connection. In this study, three types of terminals were used, namely AMP-1318105-1,AMP-175217-5, and AMP-1-175218-5, each of which was combined with wire measuring AWG 24,22, 20, and 18. The test results showed that the combination of the AMP-1-175218-5 terminal with AWG 18 wire produced the highest tensile strength of 15,9 kgf, while the combination of the AMP-1318105-1 terminal with AWG 24 wire produced he lowest tensile strength, but still above the minimum standard that the wire size and type of terminal have a significant influence on the tensile strength of the conection. The larger the wire size, the higher the resulting tensile strength value. Thus, selecting the right combination of terminals and wires is very important to ensure the quality and reliability of electrical connections in the wire harness industry.

Page 1 of 1 | Total Record : 10

 1 

Filter by Year

2026 2026


Reset
Filter By Issues
All Issue Vol. 10 No. 1 (2026): April 2026 Vol. 9 No. 2 (2025): Oktober 2025 Vol. 9 No. 1 (2025): April 2025 Vol. 8 No. 2 (2024): Oktober 2024 Vol. 8 No. 1 (2024): April 2024 Vol. 7 No. 2 (2023): Oktober 2023 Vol. 7 No. 1 (2023): April 2023 Vol. 6 No. 2 (2022): Oktober 2022 Vol. 6 No. 1 (2022): April 2022 Vol. 5 No. 2 (2021): Oktober 2021 Vol. 5 No. 1 (2021): April 2021 Vol. 4 No. 2 (2020): Oktober 2020 Vol. 4 No. 1 (2020): April 2020 Vol. 3 No. 2 (2019): Oktober 2019 Vol. 3 No. 1 (2019): April 2019 More Issue