Article Per Year (5 Year)
p-Index From 2021 - 2026
7.393
P-Index
This Author published in this journals
All Journal INVOTEK: Jurnal Inovasi Vokasional dan Teknologi JPP IPTEK (Jurnal Pengabdian dan Penerapan IPTEK) Journal of Applied Engineering and Technological Science (JAETS) MOTIVECTION : Journal of Mechanical, Electrical and Industrial Engineering Didaktik : Jurnal Ilmiah PGSD STKIP Subang Teknomekanik Jurnal Vokasi Mekanika Journal of Engineering Researcher and Lecturer Journal of Innovative and Creativity
Andre Kurniawan
Universitas Negeri Padang
Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Mathematics Mechanical Engineering Social Sciences Transportation Other

Published : 53 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 53 Documents
Search

 2   3   4   5   6 
Analisa Penggunaan Bahan Bakar Pellet Kayu pada Tungku Biomassa Rizki Agustian; Yolli Fernanda; Arwizet K; Andre Kurniawan
Jurnal Vokasi Mekanika (VoMek) Vol 7 No 1 (2025): Jurnal Vokasi Mekanika
Publisher : Unversitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/vomek.v7i1.827

Abstract

Along with population growth and global industrialization, the level of fossil fuel use continues to increase. If fuel consumption continues to increase without proper maintenance, the fuel oil (BBM) crisis will become an unavoidable problem. Utilizing biomass as a source of energy is profitable because theoretically it does not produce the greenhouse gas CO2 which is detrimental to the environment. However, conventional biomass stoves still face problems related to exhaust emissions and combustion efficiency. This study's objective is to make a biomass stove that can reduce exhaust emissions to increase combustion efficiency, thus supporting the use of environmentally friendly energy. The method usually used is by changing the mass of wood pellets during boiling water into the combustion chamber. The weight ranges between 300 grams, 400 grams, 500 grams, 600 grams and 1400 grams, each according to the capacity of the combustion chamber. The five types of tests aim to determine the extent to which differences in wood pellet mass and biomass stove type have on the combustion process, as well as how long the process takes. The findings of the study show that variations in the mass of wood pellets greatly influence the boiling time of water, with a mass of 300 grams the boiling time has not yet reached the boiling point of the water, with a mass of 400 grams it gets 23 minutes, with a mass of 500 grams it gets 25 minutes, with a mass 600 grams can be obtained in 26 minutes
Analysis Of Physical And Mechanical Properties Of Recycled Aluminum With Variations In Molding Temperatures And Adding Degasser Powder As An Environmentally Friendly Material Zainal Abadi; Andre Kurniawan; Andril Arafat; Susi Marisa
Jurnal Vokasi Mekanika (VoMek) Vol 7 No 2 (2025): Jurnal Vokasi Mekanika
Publisher : Unversitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/vomek.v7i1.833

Abstract

Recycling is the process of converting used materials into new materials with the aim of preventing waste that can actually be useful, reducing the use of new raw materials, reducing energy use, reducing pollution, land damage. The purpose of this study was to determine the most optimal pouring temperature to produce the best casting of the physical and mechanical properties of recycled aluminum material added with degasser powder. The urgency of this study is as a research material in the field of materials. This research method is to make 3 variations of melting temperature before pouring into the mold, the temperature variations used are 6750-7000C, 7000-7250C and 7250-7500C. At any temperature variation before pouring into the mold, degasser powder is also added to help clean the molten metal from the gases trapped in the molten metal. After the sample is molded, the results are visually observed, then a specimen is made to test the mechanical properties of the used aluminum casting. The data from the test results show that there is a fairly large porosity value in each variation. The hardness value of the test results shows that it is directly proportional to the temperature variation. At a temperature of 7250-7500C the average hardness value is 98.5 HVN. While the tensile strength at a temperature of 7250-7500C value is 83.58 Mpa, at a temperature of 7000-7250C = 74.39 Mpa and at a temperature of 6750-7000C = 71.5 Mpa. Thus the most optimal temperature in this used aluminum casting is 7250-7500C.
Characterization of Density and Stability of Oil Palm Empty Fruit Bunch Briquettes without Binder under Variations of Molding Temperature and Compaction Pressure Muhammad Ravi Albasyit; Yolli Fernanda; Refdinal Refdinal; Andre Kurniawan
Jurnal Vokasi Mekanika (VoMek) Vol 7 No 4 (2025): Jurnal Vokasi Mekanika
Publisher : Unversitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/vomek.v7i4.902

Abstract

The dependence on fossil fuels in Indonesia continues to increase in line with the growing energy consumption, thus necessitating alternative energy sources that are more environmentally friendly and sustainable. Oil palm empty fruit bunches (OPEFB) are agro-industrial waste with great potential to be utilized as raw material for briquette production; however, their utilization remains suboptimal. This study aims to analyze the effect of molding temperature and compaction pressure on the density and stability of binderless OPEFB briquettes. The research method employed is experimental, using a quantitative descriptive-analytical approach with non-carbonized briquettes. The treatment variations include molding temperatures (230°C, 250°C, and 280°C) and compaction pressures (1 MPa, 3 MPa, and 5 MPa) applied to two types of materials, namely dried and undried OPEFB. The results indicate that increasing temperature and compaction pressure significantly enhances briquette density. At a temperature range of 250–280°C and a pressure of 5 MPa, the briquettes achieved the highest density (>1.0 g/cm³) with strong shape stability. The thermoplastic lignin content in OPEFB melts at high temperatures, acting as a natural binder. Briquettes with a density ?0.80 g/cm³ exhibited strong physical integrity, while those with a density <0.70 g/cm³ tended to be brittle. It can be concluded that the optimum conditions for producing high-quality binderless OPEFB briquettes are achieved at a temperature range of 250–280°C and a compaction pressure of 5 MPa, resulting in briquettes with excellent density and shape stability suitable as a renewable alternative energy source
Characterization Of Bioethanol From Cassava As A Fuel In Gasoline Engines Muhammad Ihsan; Yolli Fernanda; Arwizet K; Andre Kurniawan
Jurnal Vokasi Mekanika (VoMek) Vol 7 No 4 (2025): Jurnal Vokasi Mekanika
Publisher : Unversitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/vomek.v7i4.913

Abstract

The energy demand in Indonesia continues to increase, particularly in the transportation sector, which remains highly dependent on fossil fuels such as gasoline. This dependency causes several issues, including the depletion of fossil fuel reserves and the rise of greenhouse gas emissions that negatively impact the environment. One potential solution to address these challenges is the development of bioethanol as a renewable and environmentally friendly alternative fuel. Bioethanol can be produced from starchy materials, one of which is white cassava (Manihot esculenta), known for its high productivity and wide availability in Indonesia. The production process of bioethanol consists of several stages, including liquefaction, fermentation, and distillation, where fermentation temperature plays a crucial role in determining the ethanol yield. Previous studies have shown that variations in fermentation temperature significantly influence the efficiency of bioethanol production. This study aims to characterize bioethanol produced from cassava fermentation at various temperature variations and to evaluate its potential as a fuel for gasoline engines. The results are expected to contribute to the improvement of bioethanol production efficiency and to promote cassava utilization as a renewable energy source in supporting national energy sustainability.
Wind Flow Analysis on Software-Based U-Type Savonius Wind Turbine Blades Using Solidworks Flow Simulation Muhammad Aulia; Randi Purnama Putra; Andre Kurniawan; Fitrah Qalbina
Jurnal Vokasi Mekanika (VoMek) Vol 8 No 1 (2026): Jurnal Vokasi Mekanika
Publisher : Unversitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/2cnmaw42

Abstract

Savonius wind turbines are a type of vertical axis wind turbines that work based on the principle of drag force. The way this turbine works begins with a gust of wind that hits the turbine blades which are generally semi-cylindrical or resemble the letter "U". When the wind blows, the side of the blade facing directly in the direction of the wind will receive a greater thrust, while the side of the blade facing the wind will receive a smaller thrust, resulting in a difference in force that causes the turbine to rotate. This study aims to analyze the performance of savonius wind turbines based on the value of power coefficient (Cp) and torque coefficient (Ct) at wind speed variations. The method used in this study is a numerical method with a Computational Fluid Dynamics (CFD) approach. Simulations were carried out at wind speed variations of 3 m/s, 5 m/s, and 7 m/s to determine the effect of changes in wind speed on the flow characteristics and performance of the turbine. The simulation results showed that the value of the power coefficient (Cp) and the torque coefficient (Ct) were in the range of 0.140 to 0.157. This value changes as the wind speed increases, which shows that the variation in wind speed affects the performance of the savonius wind turbine. Based on these results, it can be concluded that the Savonius wind turbine has good potential to be used in areas with low to medium wind speeds.
Calculation of High Pressure Heater Efficiency in the Feedwater System of PT PLN IP Teluk Sirih Unit 2 Steam Power Plant Zulvani Adha; Andre Kurniawan; Arwizet K; Yolli Fernanda
Jurnal Vokasi Mekanika (VoMek) Vol 8 No 1 (2026): Jurnal Vokasi Mekanika
Publisher : Unversitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/v1frxb70

Abstract

PT PLN IP Teluk Sirih is a coal-fired steam power plant that supplies electricity to the West Sumatra region. In steam power plants, the High Pressure Heater (HPH) functions as a heat exchanger that preheats feedwater before entering the boiler by utilizing extraction steam from  turbine. Damage or performance degradation of the HPH can reduce its effectiveness and lifespan, decrease feedwater temperature, increase the required heating in  boiler, raise fuel consumption, and ultimately lower the overall efficiency of the power plant cycle. Therefore, this study aims to determine the efficiency of HPH at PT PLN IP Teluk Sirih Unit 2 in order to support proper maintenance planning and reduce operational costs. The research employs a quantitative method with a descriptive–analytical approach using actual operational data obtained from the Distributed Control System (DCS) of PLTU Teluk Sirih Unit 2. The efficiency of HPH is calculated by comparing the heat released by the steam  and the heat absorbed by the feedwater  or HPH 1 and HPH 2. The variables used include the feedwater inlet temperatures of 192.9 °C for HPH 1 and 141.5 °C for HPH 2. The results show that the efficiency of HPH 1 is 91.26%, while the efficiency of HPH 2 is 88.11%. For HPH 1,  and  are 49,552,500 kJ/h and 54,297,300 kJ/h, respectively, whereas for HPH 2,  and  are 71,613,300 kJ/h and 81,288,480 kJ/h. These results indicate that a higher inlet temperature leads to a greater ratio between  and  , and consequently to a higher HPH efficiency.  
Designing Learning Media Using Augmented Reality for Engineering Mechanics Course Aprilla Fortuna; Waskito; Purwantono; Andre Kurniawan; Welli Andriani; Masnaini Alimin
Journal of Engineering Researcher and Lecturer Vol. 2 No. 1 (2023): Regular Issue
Publisher : Researcher and Lecturer Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58712/jerel.v2i1.20

Abstract

The development of digital technology for education is continuously conducted to successfully integrate digital technology with people's lives. This study aimed to develop an Augmented Reality learning media application for the Engineering Mechanics course, which is considered challenging by some students. Engineering mechanics, a discipline that analyzes structural analysis in compensating for the loads that work on a particular machine in scalar quantities, motion forces, vectors, and moments that require physical structural forms to analyze them, is considered challenging by some students. The Augmented Reality application was created using the prototyping method, which consists of three steps: 1) listening to the customer, 2) building/ revising mock-up, and 3) customer test-drivers mock-up. The AR-based learning media application includes usage instructions, developer info, learning videos, 3D AR object animation simulations, and exercise and discussion menus, which were tested as expected. The results of the black box testing indicate that the Augmented Reality-based engineering mechanics learning media application ran successfully as expected. However, users suggested improving the navigation speed by streamlining page transitions. The application provides an accessible solution for students as an alternative to traditional distance education, offering anytime, anywhere access to learning materials with longer duration.
Efficiency comparison of fin heatsink models using solidworks thermal analysis Angga Hermawansyah; Andre Kurniawan; Sein Laer Yi Win; Nanang Qosim; Syamsul Bahri Biki; Apri Wiyono
Journal of Engineering Researcher and Lecturer Vol. 2 No. 2 (2023): Regular Issue
Publisher : Researcher and Lecturer Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58712/jerel.v2i2.84

Abstract

Heatsink is composed of square or circular-shaped base plates connected to fins on one side. Fluid flow within the heatsink typically occurs through natural convection, where colder air flows into the hotter fin region and exits through the fin tips. In this study, we conducted numerical simulations using Solidworks 2021-2022 Research Licence software to investigate three different heatsink models with distinct shapes, aiming to determine the most effective cooling rate. The thermal simulation results revealed that the heatsink design with square fins exhibited lower maximum temperatures, making it recommended for applications utilizing natural convection. Additionally, heat sinks with thinner fins have a larger surface area, accommodating more fins compared to thicker ones, which affects the heat transfer efficiency within the heat sink.
Study of the variation of the leading edge of a railway crane on the aerodynamic characteristics Willy Hardi Vernando; Andre Kurniawan; Randi Purnama Putra; Mirta Widia
Journal of Engineering Researcher and Lecturer Vol. 3 No. 2 (2024): Regular Issue
Publisher : Researcher and Lecturer Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58712/jerel.v3i2.145

Abstract

The front body design of the railway crane is flat or bluff type. The design causes a large drag, so the railway crane requires high fuel consumption to drive. Therefore, this study aims to modify the front body of the railway crane by applying the shape of the leading edge to reduce drag. This research also investigates the effect of leading-edge angles on aerodynamic characteristics. The method used is computational fluid dynamics, using the flow simulation feature of the Solidworks research licence software. This study considered three variations of leading edge angle (40°, 45° and 50°). The simulation results show that the larger the leading edge angle, the lower the drag coefficient value. In addition, the simulation shows that there is a high air pressure at the front of the railway crane with the bluff shape, while the modified railway crane with the leading edge applied has a lower air pressure at the front. Furthermore, the results and discussion in this article present the simulation results showing the velocity streamline and pressure contour of each model.
Analysis of Electrical Energy Consumption and Savings Potential at PT. Sawitech Manufacturing Workshop Through Energy Audit Method Erik Ardinata; Dori Yuvenda; Arwizet K; Andre Kurniawan
Jurnal Vokasi Mekanika (VoMek) Vol 8 No 3 (2026): Jurnal Vokasi Mekanika
Publisher : Unversitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/tj50w131

Abstract

This study aims to analyze the electrical energy consumption profile at PT. Sawitech manufacturing workshop and office areas, identify equipment contributing most to total energy use, and calculate savings potential through energy audit method. The research used descriptive quantitative approach by directly measuring electrical load, observing equipment operation hours, and applying load factor values. Total annual energy consumption based on manual calculation was 68,745.63 kWh/year, while RETScreen Expert simulation yielded 71,673 kWh/year (4.08% difference). Energy Consumption Intensity (ECI) based on total area of 2,272 m2 was 30.25 kWh/m2/year, classified as Very Efficient according to SNI 6196:2011 and ESDM Ministerial Regulation No. 13/2012. The highest energy consumers were welding transformer (22,680 kWh/year), compressor (17,280 kWh/year), and large blower (1,999.2 kWh/year). Energy savings recommendations include replacing conventional welding transformer with inverter based unit, substituting large blowers with more efficient axial fans, upgrading lighting to LED, and replacing conventional AC with inverter AC. Implementation of these recommendations can reduce energy consumption by 8,518.6 kWh/year (11.8%) and save costs of Rp 9,013,754/year. Carbon emissions before savings measures amounted to 59.81 ton CO 2/year, decreasing to 52.40 ton CO 2/year after implementation, a reduction of 7.41 ton CO 2/year (12.39%). Payback period of total investment (Rp 105,130,400) is approximately 6.9 years
Co-Authors - Primawati Abdillah Irfan Abdul Aziz Akhmad Rais AM Mufarrih Ambiyar, Ambiyar Angga Hermawansyah Apri Wiyono Aprilla Fortuna Arafat, Andril Ardiansyah Syaputra Arwizet Arwizet Arwizet Arwizet, Arwizet Azel Rozandi Bahri Johan Tarigan Bangun Sukma Wijaya Budi Syahri Budi Syahri Bulkia Rahim Daffa Raihan Senthot Dani Harmanto Delima Yanti Sari Denisa Putri Jadenis Devky Meinaldi Fernanda Diki Afrianto Dori Yuvenda Egis Egis Eko Indrawan Erik Ardinata Fadhilah Fadhilah Fajri Ramadhan Farhan Rahmat Putra Fathi Aulia DZ Fauza, Anna Niska Febri Prasetya Felia Maresta Fitrah Qalbina Gusni Sushanti Irzal Irzal Islamimahdi Islamimahdi Jasman Jumrowi Lubis Kresna Adi Prasetya Krismadinata Krismadinata, Krismadinata Lilik Darwito M ZIKRA M. Chalid Kurnia Masnaini Alimin Mirta Widia Mochammad Haikal Moh. Nasir Hariyanto Muhammad Aulia Muhammad Bayu Septian Muhammad Djoni Bustan Muhammad Fadil Al Rahman Muhammad Habib Halmadid Muhammad Ihsan Muhammad Iqbal Muhammad Iqrha Muhammad Raihan Muhammad Ravi Albasyit Muhammad Rizki Anshari Muhammad Yasep Setiawan Mulianti Nanang Qosim Nanang Qosim Nelvi Erizon Nofri Helmi Nur Ichsan Abdillah Nurdin Hendri Ovi Marendah Purwantono Purwantono Putra, Randi Purnama Rachmadi Rachmadi Rano Hanif Refdinal, Refdinal Remon Lapisa Remon Lapisa Riezky Hidayattullah Rio Ramadhan Rizki Agustian Rudy Anarta Ryan Ananda Simon Sein Laer Yi Win Sri Haryati Sri Rizki Putri Primandari Susi Marisa Syahril Syahril Syamsul Bahri Biki Tarig Elshaarani Teuku Kamal Furqan Toto Sugiarto Usin Usin Wanda Afnison Waskito Welli Andriani Willy Hardi Vernando Willy Vernando Yolli Fernanda Yoszi Mingsih Anaperta Yudi Star Novsky Yufrizal Yufrizal Yus Donald Chaniago Zainal Abadi Zakki Fuadi Emzain Zulvani Adha