cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
-
Contact Email
-
Phone
-
Journal Mail Official
-
Editorial Address
-
Location
Kota padang,
Sumatera barat
INDONESIA
Jurnal Teknik Mesin
Published by Politeknik Negeri Padang
ISSN : 18298958     EISSN : 26555670     DOI : -
Core Subject : Science, Engineering,
Automotive Engineering Energy Engineering Materials Science & Nanotechnology Mechanical Engineering
Jurnal Teknik Mesin adalah sebuah jurnal peer review yang didedikasikan untuk publikasi hasil penelitian yang berkualitas dalam bidang teknik mesin.
Arjuna Subject : -
Articles 220 Documents
 18   19   20   21   22 
Perancangan Kalkulator Elemen Mesin untuk Perencanaan Poros Suryanto, Hendri; Herraprastanti, Eva Hertnacahyani; Wahyusari, Retno; Gunawan, Helmi
Jurnal Teknik Mesin Vol 18 No 1 (2025): Jurnal Teknik Mesin
Publisher : Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30630/jtm.18.1.1857

Abstract

To design a transmission shaft requires quite complicated calculations, the calculation time is also quite long and the calculations must be careful because they are done manually, as has been done so far. The calculation results must also be accurate because the size of the shaft that does not meet the requirements can result in failure. To meet these needs, calculations in shaft design can be done with a tool, namely a software application that is run on a computer. The purpose of this study is to produce a software application or machine element calculator for shaft planning using the Matlab GUI, and to increase the efficiency of shaft planning in terms of time. This machine element calculator is designed by selecting the Matlab GUI menus according to the calculation formulas for the torsional load shaft diameter, namely Edit Text, Static Text, Panel and Push Button. Then arrange and edit the GUI menus through the Property Inspector and create a program (Matlab Code) for calculating the shaft diameter through the Callback menu. With this calculator, calculations in transmission shaft planning can be accelerated, which is an average of 24.8 minutes faster than manual calculations, which is an average of 34.8 minutes.
Analisa Pengaruh Penggunaan Oli Pelumas 15W-40 dan 10W-40 Terhadap Performa Mesin Motor Matic 110 CC Mudzakir, M.; Ardian, Dedy Rachman; Sundari, Putri
Jurnal Teknik Mesin Vol 18 No 1 (2025): Jurnal Teknik Mesin
Publisher : Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30630/jtm.18.1.1864

Abstract

This study aims to analyze the impact of using lubricating oils with SAE 10W-40 and SAE 15W-40 viscosities on the performance of 110cc automatic motorcycle engines. The tests focus on the effects of both types of oil on engine power, torque, and air-fuel ratio (Air Fuel Ratio/AFR). This research employs an experimental method involving laboratory tests and road tests to obtain accurate data. The viscosity tests show that SAE 10W-40 oil has lower viscosity at low and medium temperatures compared to SAE 15W-40, which has higher viscosity and is more stable at high temperatures. The power and torque tests indicate that SAE 10W-40 oil produces more stable maximum power within the medium RPM range, while SAE 15W-40 has a sharper peak power but within a more limited RPM range. The torque tests also show that SAE 10W-40 performs better in maintaining torque over a longer range. Additionally, AFR analysis indicates that SAE 10W-40 oil approaches the ideal ratio for efficient combustion, while SAE 15W-40 tends to produce a richer mixture at high RPM, which improves performance but reduces fuel efficiency. The results suggest that the selection of oil with the appropriate viscosity significantly affects engine performance, especially in terms of fuel efficiency, power, and torque in a 110cc automatic motorcycle.
Pengaruh Secondary Skin Dengan Variasi Kemiringan Sudut Fasad Terhadap Efisiensi Energi Dan Kenyamanan Termal Ruangan Rinaldi, Irwan; Saputra, Dendi Adi; Rozi, Melda
Jurnal Teknik Mesin Vol 18 No 1 (2025): Jurnal Teknik Mesin
Publisher : Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30630/jtm.18.1.1865

Abstract

This study examines the effect of applying secondary skin with varying slope angles on the facade on energy efficiency and indoor thermal comfort. Facades with varying slope angles are designed to respond adaptively to external environmental conditions, such as solar radiation intensity, air temperature, and wind movement, with the aim of minimizing the building's thermal load and improving overall thermal performance. An experimental approach is used to evaluate the effectiveness of secondary skin with varying slopes. The thermal comfort parameters measured include air temperature, relative humidity, lighting intensity, and energy requirements for cooling, all of which are analyzed based on ASHRAE standards. The results of the study indicate that the use of facades with opening slopes of 10°, 20°, and 30° can reduce the room cooling load by 11.05%, 10.95%, and 10.80%, respectively. In addition, there was a decrease in the average Predicted Mean Vote (PMV) value of 0.059 (5.03%) at a slope of 10°, 0.073 (6.29%) at a slope of 20°, and 0.078 (7.20%) at a slope of 30°. These findings indicate that secondary skin with variations in the slope angle of the facade is an innovative and sustainable approach in passive cooling strategies, which contributes to reducing energy consumption.
Analisis Aplikasi System Ai Robotnisasi pada Kualitas Permesinan Mesin CNC di PT Evergrown Technology Batam Kendek, Yohanis Sampe; Palungan, Musa Bondaris; Nitha, Nitha
Jurnal Teknik Mesin Vol 18 No 1 (2025): Jurnal Teknik Mesin
Publisher : Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30630/jtm.18.1.1872

Abstract

This study aims to analyze the application of Artificial Intelligence (AI) and robotization systems on the machining quality of CNC machines at PT Evergrown Technology Batam. The research focuses on two primary indicators of machining quality: surface roughness and product cylindricity, which were experimentally measured in a controlled laboratory environment. Additionally, production process efficiency was examined through indicators such as production time, production costs, defect rates, and tool wear. Data were collected from 25 observation units selected through purposive sampling and analyzed using a quantitative approach with the assistance of SPSS version 2.3. The analytical methods employed include descriptive statistics, simple linear regression, one-way ANOVA, and comparative analysis to evaluate pre- and post-implementation conditions of AI and robotization systems. The results indicate that the implementation of AI and robotization has a significant impact on improving machining quality and production efficiency, as evidenced by a significance value of p < 0.05. These findings suggest that integrating AI and automation into production processes is a strategic move for advancing modern manufacturing industries.
Rancang Bangun Mesin Pencetak Briket Metode Screw Extruder Semi-Otomatis Vian Anugrah; Irwan Aranda
Jurnal Teknik Mesin Vol. 18 No. 2 (2025): Jurnal Teknik Mesin
Publisher : Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30630/jtm.18.2.1882

Abstract

Global dependence on fossil fuels has driven the search for environmentally friendly alternative energy sources. One promising solution is the utilization of biomass into briquettes as a form of renewable solid fuel. This study aims to design and develop a semi-automatic screw extruder briquette machine intended for Micro, Small, and Medium Enterprises (MSMEs). The machine is designed with a production capacity of 20 kg/hour, using a screw with an outer diameter of 70 mm, shaft diameter of 16 mm, 70 mm pitch, and 460 mm length. Technical calculations show a torque requirement of 31.23 Nm and power of 59.51 W, thus a 0.25 HP electric motor (1400 rpm) was selected. The main materials include stainless steel SS 304 for critical parts such as the hopper, mold, screw chamber, screw blade, and shaft; and ASTM A36 steel for the machine frame. Theoretical analysis indicates a maximum stress of 112.2 MPa, displacement of 0.36 mm, and a safety factor of 2.2. Meanwhile, simulation using Finite Element Analysis (FEA) with SolidWorks 2025 resulted in a maximum stress of 96.14 MPa, displacement of 0.74 mm, and a minimum safety factor of 2.6. These results confirm that the machine design is structurally safe and supports the utilization of biomass-based renewable energy
Analisa Kekuatan Rangka Pada Mesin Lapping Dengan Menggunakan Metode Elemen Hingga Vicky Eriandi; Kusdi Prijono
Jurnal Teknik Mesin Vol. 18 No. 2 (2025): Jurnal Teknik Mesin
Publisher : Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30630/jtm.18.2.1892

Abstract

This study aims to analyze the frame strength of a lapping machine using the Finite Element Method (FEM) based on SolidWorks software. The lapping machine requires a strong and stable frame structure to effectively withstand operational loads without experiencing significant deformation. The machine frame is designed using UNP profile steel with ASTM A36 specifications and is analyzed through simulation involving stress, strain, and safety factor to ensure its reliability. The research methodology includes literature review, 3D modeling of the machine frame, determination of the loading parameter of 12.737 N, material selection, and simulation processes involving fixed geometry setup, meshing, and result evaluation. The simulation results show a maximum stress of 3.294 MPa, a maximum displacement of 571.884 mm, and a minimum safety factor of 3.2. As a comparison, theoretical calculations were carried out to verify the simulation results, which showed consistency within acceptable error margins. The conclusion of this study indicates that the lapping machine frame design meets structural safety criteria and is suitable for industrial operation. FEM simulation proves to be effective in validating structural strength before the production stage, thereby saving development time and costs.
Pengaruh Variasi Arus Pengelasan SMAW Terhadap Kekuatan Tarik Dan Bending Baja ST 37 Dengan Elektroda E7016 Moch Iqbal Hakiki; Agus Sulistiawan; Mohammad Anshori
Jurnal Teknik Mesin Vol. 18 No. 2 (2025): Jurnal Teknik Mesin
Publisher : Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30630/jtm.18.2.1913

Abstract

Paddock is an optional component used to support a motorcycle in a stable position when not in use. However, paddocks made from low carbon steel such as ST 37 are still at risk of structural failure, such as cracking or bending, due to suboptimal weld joint quality. This study aims to determine the maximum tensile and bending strength of welded joints on ST 37 steel for paddock applications. An experimental method was used to analyze the effect of varying SMAW welding currents on the tensile and bending strength of welded joints on ST 37 steel. The study employed welding currents of 90 A, 100 A, and 110 A, using E7016 electrodes with a diameter of 3.2 mm, V-groove type welds at 60°, butt joint type, 1G welding position, tensile testing based on ASTM E8, microstructure observation, and bending testing according to ASTM E290 standards. Statistical analysis using One Way ANOVA and Tukey HSD test confirmed significant differences among the current variations. The results showed that the welding current variation significantly affected both tensile and bending strength. The highest tensile strength was obtained at 110 A with an average stress of 433.59 N/mm², strain of 25%, and modulus of elasticity of 1770.08 N/mm². The 110 A current produced the best microstructure with dominant and evenly distributed acicular ferrite, finer grain size, and optimal metal fusion. This structure enhanced mechanical strength, resulting in ductile fracture characteristics. The highest bending strength was also achieved at 110 A, with an average value of 1657.75 N/mm².
Analisis Kinerja Turbin Savonius Dengan Variasi Sudu Untuk Menghasilkan Listrik Dari Wind Tunnel Alvian Harris Gita Purnama; Nur Rohmat; Hilmala Nurmualimah
Jurnal Teknik Mesin Vol. 18 No. 2 (2025): Jurnal Teknik Mesin
Publisher : Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30630/jtm.18.2.1921

Abstract

The extensive use of fossil fuels for electricity generation in Indonesia has intensified the urgency to develop environmentally friendly and sustainable renewable energy sources. One underutilized potential lies in the conversion of exhaust air from buildings into micro-scale electrical energy. Previous studies have shown that the number of blades on a Savonius turbine significantly affects energy conversion efficiency, particularly under low wind speed conditions. However, there remains a lack of comprehensive exploration into the performance impact of different blade configurations. This study aims to analyze the performance of Savonius turbines with varying blade numbers (three and four blades) in generating electricity within a wind tunnel, and to compare the efficiency between the two configurations. The research employed experimental testing and analytical calculations on Savonius turbines operated in a wind tunnel with an average wind speed of 7.908 m/s. The analysis of Tip Speed Ratio (TSR) yielded values of 0.122 for the three-blade turbine and 0.137 for the four-blade turbine. The calculated power efficiency was 1.37% for the three-blade turbine and 0.97% for the four-blade turbine. The electrical power output was measured at 3.6 watts for the three-blade configuration and 16.8 watts for the four-blade configuration. The low TSR values indicate suboptimal energy capture from wind flow. Therefore, the utilization of exhaust airflow for micro power generation requires further optimization to enhance overall performance and applicability
Designing a Vendor Performance Assessment Model to Develop a Vendor Management System Rahmad Budi Warman; Mokh. Suef
Jurnal Teknik Mesin Vol. 18 No. 2 (2025): Jurnal Teknik Mesin
Publisher : Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

The procurement of goods/services has an important role in providing profits for the company and avoiding losses. PLN UP3 Bontang is currently facing challenges in assessing vendor performance that has not been effective, including its follow-up, as well as the absence of rules related to vendor selection which causes the procurement process to take longer. This research aims to design a vendor performance appraisal model to develop an effective and efficient vendor management system. The research method used Focus Group Discussion (FGD) with experts to identify assessment criteria, then applied the Analytic Hierarchy Process (AHP) method to determine the weight of the criteria and the Technique for Order Preference by Similarity to Ideal Solution (TOPSIS) for vendor ranking. The results showed six main criteria: sanctions (25.5%), quality & quantity (22.8%), time (14.9%), service (14.1%), K3 management (12.2%), and financial vendor (10.4%). Evaluation of five jaskonhar vendors showed that PT SE obtained the highest rating with a preference value of 0.903, while PT PM was in the lowest position with a value of 0.051. This model provides an objective basis for strategic decision-making in vendor management and strengthens long-term cooperative relationships between companies and vendors.
Pemanfaatan Photovoltaic Untuk Supply Listrik Ke Aquarium Reffangga Eka Pramudian; Mohammad Effendi
Jurnal Teknik Mesin Vol. 18 No. 2 (2025): Jurnal Teknik Mesin
Publisher : Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30630/jtm.18.2.1952

Abstract

The electricity demand for life-support systems in aquariums, such as water pumps, heaters, and lighting, requires a stable and sustainable power supply. This study aims to design and develop a photovoltaic-based system as an alternative to conventional electricity from the state utility (PLN) for household-scale aquariums. The system is designed by integrating photovoltaic panels, a solar charge controller, an inverter, and a battery. The research stages include a literature review, power demand identification, system design, simulation, assembly, and performance testing. The test results show that the solar panel capacity combined with a battery is able to supply the aquarium load with reliable system efficiency. Furthermore, the utilization of photovoltaic energy has been proven to reduce dependency on PLN electricity and lower operational costs. Thus, the use of solar energy through photovoltaic technology is proven to be effective and sustainable in meeting the electricity needs of household aquariums.

Page 21 of 22 | Total Record : 220

 18   19   20   21   22 

Filter by Year

2004 2026


Reset
Filter By Issues
All Issue Vol. 19 No. 1 (2026): Jurnal Teknik Mesin (In Press) Vol. 18 No. 2 (2025): Jurnal Teknik Mesin Vol 18 No 1 (2025): Jurnal Teknik Mesin Vol 17 No 2 (2024): Jurnal Teknik Mesin Vol 17 No 1 (2024): Jurnal Teknik Mesin Vol 16 No 2 (2023): Jurnal Teknik Mesin Vol 16 No 1 (2023): Jurnal Teknik Mesin Vol 15 No 2 (2022): Jurnal Teknik Mesin Vol 15 No 1 (2022): Jurnal Teknik Mesin Vol 14 No 2 (2021): Jurnal Teknik Mesin Vol 14 No 1 (2021): Jurnal Teknik Mesin Vol 13 No 2 (2020): Jurnal Teknik Mesin Vol 13 No 1 (2020): Jurnal Teknik Mesin Vol 12 No 2 (2019): Jurnal Teknik Mesin Vol 12 No 1 (2019): Jurnal Teknik Mesin Vol 11 No 2 (2018): Jurnal Teknik Mesin Vol 11 No 1 (2018): Jurnal Teknik Mesin Vol 10 No 2 (2017): Jurnal Teknik Mesin Vol 9 No 1 (2012): Jurnal Teknik Mesin Vol 1 No 2 (2004): Jurnal Teknik Mesin Vol 1 No 1 (2004): Jurnal Teknik Mesin More Issue