Mars: Jurnal Teknik Mesin, Industri, Elektro dan Ilmu Komputer
Mars : Jurnal Teknik Mesin, Industri, Elektro Dan Ilmu Komputer memuat naskah hasil-hasil penelitian di bidang Teknik Mesin, Industri, Elektro Dan Ilmu Komputer
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<![CDATA[Analisa Pengujian Kekerasan pada Cakram Rem Motor Yamaha Sport ]]>
<![CDATA[ Mars: Jurnal Teknik Mesin, Industri, Elektro Dan Ilmu Komputer Vol. 3 No. 6 (2025): Desember: Mars: Jurnal Teknik Mesin, Industri, Elektro Dan Ilmu Komputer ]]>
Publisher : <![CDATA[Asosiasi Riset Teknik Elektro dan Informatika Indonesia ]]>
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DOI: 10.61132/mars.v3i6.1404
<![CDATA[Brake discs are one of the motorcycle spare parts that function to connect and reduce speed when the motorbike is moving, although very simple, this spare part is part of the braking system and has a very important role, without braking it will endanger the driver and other road users. To determine the hardness of the motorcycle brake disc on two original brake discs and variation brake discs on the Yamaha Vision sport motorbike by conducting Rockwell hardness tests on the original and variation brake discs with 10 test variable points. The results obtained for the average value at the level of hardness on the original disc sample are 55.1 HRC and the average value on the variation disc sample is 44.6 HRC, and the conversion hardness value from the Rockwell test. For Brinell testing and tensile testing from the results of Rockwell hardness testing, the average Brinell and tensile test values were converted from the test site with the average Brinell conversion results for the original disc being 575 HBS, while the average variation disc value was 417.1 HBS, the conversion tensile test value with the results on the original disc was 1626 N/mm² and the variation disc was 1427 N/mm² with 10 variable point Rockwell testing and the conversion value of the Brinell hardness test and the original disc tensile test value was still greater than the variation disc tensile test value.]]>
<![CDATA[Sistem Pendukung Keputusan Penerima Bantuan pada Program Keluarga Harapan Menggunakan Metode Topsis: (Studi Kasus: Pkh Desa Pogo Tena) ]]>
<![CDATA[ Mars: Jurnal Teknik Mesin, Industri, Elektro Dan Ilmu Komputer Vol. 4 No. 1 (2026): Februari: Mars: Jurnal Teknik Mesin, Industri, Elektro Dan Ilmu Komputer ]]>
Publisher : <![CDATA[Asosiasi Riset Teknik Elektro dan Informatika Indonesia ]]>
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DOI: 10.61132/mars.v4i1.1407
<![CDATA[This research aims to design and develop a decision support system to determine the recipients of assistance in the Family Hope Program (PKH) in Pogo Tena Village. This system uses the (Technique for Order Preference by Similarity to Ideal Solution) method which aims to assist decision-makers in selecting families who meet the criteria to receive social assistance based on several predetermined factors, such as income level, number of family dependents, health conditions, and education. The method used in this study is a qualitative and quantitative method with a case study approach on PKH Pogo Tena Village. Data was obtained through interviews with related parties, field observations, and data collection from existing documents. In this system, the assessment is carried out by comparing alternative performance values based on pre-established criteria, and then using the TOPSIS method to determine the families who are eligible for assistance. The results of this study show that the designed decision support system can provide more objective and transparent recommendations for aid recipients. Using the TOPSIS method, the system can prioritize beneficiaries based on their proximity to the ideal solution, which helps minimize subjective errors in the beneficiary selection process. This research is expected to contribute to increasing the effectiveness and efficiency in the implementation of the Family Hope Program in Pogo Tena Village, as well as as a reference for other agencies that want to apply similar methods in social assistance programs.]]>
<![CDATA[Penggantian Minyak OLTC Trafo 2 150 kV di Gardu Induk Rangkasbitung Baru PLN ULTG Rangkasbitung ]]>
<![CDATA[ Mars: Jurnal Teknik Mesin, Industri, Elektro Dan Ilmu Komputer Vol. 4 No. 1 (2026): Februari: Mars: Jurnal Teknik Mesin, Industri, Elektro Dan Ilmu Komputer ]]>
Publisher : <![CDATA[Asosiasi Riset Teknik Elektro dan Informatika Indonesia ]]>
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DOI: 10.61132/mars.v4i1.1420
<![CDATA[PLN (Persero) is the state-owned company responsible for supplying electrical energy in Indonesia and plays a crucial role in ensuring the reliability and continuity of power distribution. Therefore, all electrical equipment, particularly power transformers, must be maintained in safe and reliable operating conditions. Transformers function to change voltage levels from high to low or vice versa and are essential components in the electric power distribution system. One important transformer component that requires periodic maintenance is the On Load Tap Changer (OLTC). To maintain transformer performance and extend its service life, routine maintenance activities such as OLTC oil replacement are necessary. PT. PLN (Persero) ULTG Rangkasbitung conducts regular OLTC oil replacement twice a year as part of its preventive maintenance program. Transformer oil serves as both an insulating medium and a cooling agent; therefore, its condition greatly affects transformer reliability and operational safety. Degraded oil quality can cause insulation failure and reduce transformer efficiency. This study aims to describe the procedure and implementation of On Load Tap Changer oil replacement at the transformer substation of PT. PLN (Persero) ULTG Rangkasbitung. The research method used is field research, carried out through direct observation and interviews with maintenance personnel. The results of this study are expected to provide a clear understanding of the OLTC oil replacement process, support proper maintenance practices, and emphasize the importance of transformer maintenance in ensuring the reliability and sustainability of the electric power system.]]>
<![CDATA[Studi Eksperimental Pengaruh Konfigurasi Rangkaian terhadap Daya Listrik Paving Blok Piezoelektrik ]]>
<![CDATA[ Mars: Jurnal Teknik Mesin, Industri, Elektro Dan Ilmu Komputer Vol. 4 No. 1 (2026): Februari: Mars: Jurnal Teknik Mesin, Industri, Elektro Dan Ilmu Komputer ]]>
Publisher : <![CDATA[Asosiasi Riset Teknik Elektro dan Informatika Indonesia ]]>
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DOI: 10.61132/mars.v4i1.1440
<![CDATA[The increasing demand for electrical energy each year and the high dependence on fossil energy, which has negative environmental impacts, necessitate the development of alternative renewable energy sources. One potential source that can be utilized is mechanical energy from human activities through the application of piezoelectric technology in paving blocks. In addition, studies on the effect of piezoelectric circuit configurations, particularly comparisons between series and parallel circuits in generating electrical power, are still limited. This study employed an experimental method using a piezoelectric paving block prototype, with testing conducted under a static load of 60 kg. The measured parameters included output voltage and current, which were then used to calculate the generated power. The experimental results show that the parallel circuit configuration produced a higher average electrical power of 1.51 mW compared to the series circuit, which generated an average power of 1.37 mW. The increase in power in the parallel configuration was mainly influenced by the higher output current, while the difference in voltage was relatively insignificant. These findings contribute to determining a more optimal circuit configuration for the development of piezoelectric paving blocks as a renewable energy harvesting system based on mechanical pressure.]]>
<![CDATA[Penggunaan Metode ABC Analysis dalam Pengelolaan Barang Bekas untuk Perancangan Layout Gudang di UD. Barokah Mulia ]]>
<![CDATA[ Mars: Jurnal Teknik Mesin, Industri, Elektro Dan Ilmu Komputer Vol. 4 No. 1 (2026): Februari: Mars: Jurnal Teknik Mesin, Industri, Elektro Dan Ilmu Komputer ]]>
Publisher : <![CDATA[Asosiasi Riset Teknik Elektro dan Informatika Indonesia ]]>
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DOI: 10.61132/mars.v4i1.1445
<![CDATA[The management of used goods in warehouses involves a high level of complexity due to the wide variety of item types, differences in economic value, and limitations in space and labor. These conditions result in unstructured item arrangement, difficulties in determining item priorities, and inefficient loading processes caused by relatively long material handling distances. This study aims to analyze the application of the ABC Analysis method to improve layout efficiency and the management of used goods at the warehouse of UD. Barokah Mulia Rongsok. The research method employed is descriptive quantitative with a case study approach. Data were collected through observation, interviews, and warehouse record documentation, then analyzed using the ABC Analysis method as well as an analysis of the relationship between material handling distance and loading time. The results show that Category A items have the highest contribution in terms of value and movement frequency; however, under existing conditions, these items are still located far from the loading area. In addition, a relationship was found between material handling distance and loading duration. Based on these findings, a proposed warehouse layout was developed that prioritizes placing Category A items closer to the loading door, thereby potentially improving warehouse layout efficiency.]]>
<![CDATA[Studi Kelayakan Penerapan Panel Surya pada PJU Menggunakan Metode Life Cycle Cost dan Payback Period ]]>
<![CDATA[ Mars: Jurnal Teknik Mesin, Industri, Elektro Dan Ilmu Komputer Vol. 4 No. 1 (2026): Februari: Mars: Jurnal Teknik Mesin, Industri, Elektro Dan Ilmu Komputer ]]>
Publisher : <![CDATA[Asosiasi Riset Teknik Elektro dan Informatika Indonesia ]]>
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DOI: 10.61132/mars.v4i1.1446
<![CDATA[This study aims to analyze the feasibility of implementing Solar-Powered Street Lighting (PJUTS) as an alternative lighting solution in Campus C of UNINDRA PGRI. The background of this research is driven by the high operational electricity costs of the existing conventional street lighting system and the need to transition toward clean energy. The analysis methods include a technical comparison of off-grid systems, an economic evaluation based on cost savings, and an assessment of environmental impacts. The technical analysis indicates that PJUTS is highly feasible due to its ability to operate independently without reliance on the national electricity grid, thereby ensuring lighting continuity during power outages. From an economic perspective, although the initial investment (CAPEX) is higher than that of conventional street lighting, the project is considered feasible as it eliminates monthly electricity bills permanently, resulting in long-term budget efficiency and financial benefits. The Payback Period analysis shows that the initial investment can be recovered through cumulative operational cost savings. Environmentally, the implementation of PJUTS significantly contributes to carbon emission reduction and supports the Green Campus vision through the utilization of renewable energy. Overall, the transformation of the existing street lighting system into PJUTS represents a strategic and feasible initiative that fulfills effectiveness, efficiency, and sustainability criteria.]]>
<![CDATA[Simulasi CFD Berbasis Single Particle pada Proses Fast Pyrolysis Biomassa Kulit Kopi Menggunakan Reaktor Screw untuk Optimasi Produksi Gas ]]>
<![CDATA[ Mars: Jurnal Teknik Mesin, Industri, Elektro Dan Ilmu Komputer Vol. 4 No. 1 (2026): Februari: Mars: Jurnal Teknik Mesin, Industri, Elektro Dan Ilmu Komputer ]]>
Publisher : <![CDATA[Asosiasi Riset Teknik Elektro dan Informatika Indonesia ]]>
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DOI: 10.61132/mars.v4i1.1469
<![CDATA[Coffee husk is an agro-industrial waste with significant potential to be utilized as a renewable energy source through the fast pyrolysis process. This study aims to analyze and optimize gas production from the fast pyrolysis of coffee husk biomass using a screw reactor through single-particle-based Computational Fluid Dynamics (CFD) simulations. The simulations were conducted by varying the operating temperature at 500°C, 600°C, and 700°C to examine pressure distribution, heat transfer, particle temperature, and the formation of pyrolysis products, namely bio-oil, biogas, and biochar. The modeling was performed using COMSOL Multiphysics 6.2 with a numerical approach to represent thermal phenomena and biomass decomposition reactions during the pyrolysis process. The simulation results indicate that increasing temperature significantly affects the rate of heat transfer and the temperature distribution of coffee husk particles. At 600°C, heat transfer and temperature distribution are more uniform compared to 500°C, although heating at the particle core is not yet fully optimal. The pressure distribution shows a stable flow of pyrolysis gas from the bottom to the top of the reactor. In terms of products, increasing temperature leads to a reduction in biochar and bio-oil formation due to the occurrence of secondary reactions, while biogas production increases. The highest gas production is achieved at 700°C, indicating the most optimal condition for maximizing gas yield from fast pyrolysis. Therefore, single-particle-based CFD simulation can be used as an effective tool to understand pyrolysis mechanisms and optimize process parameters in a screw reactor.]]>
<![CDATA[Hubungan Kunjungan Industri dengan Peningkatan Pemahaman Sistem Produksi dan Kemampuan Berpikir Kritis Mahasiswa Fakultas Teknologi Industri UNUGHA Cilacap ]]>
<![CDATA[ Mars: Jurnal Teknik Mesin, Industri, Elektro Dan Ilmu Komputer Vol. 4 No. 1 (2026): Februari: Mars: Jurnal Teknik Mesin, Industri, Elektro Dan Ilmu Komputer ]]>
Publisher : <![CDATA[Asosiasi Riset Teknik Elektro dan Informatika Indonesia ]]>
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DOI: 10.61132/mars.v4i1.1470
<![CDATA[Industrial visits are widely recognized as an experiential learning approach that bridges the gap between theoretical knowledge and real industrial practices in engineering education. This study aims to examine the relationship between industrial visits and the improvement of production system understanding and critical thinking skills among students of the Faculty of Industrial Technology at Universitas Nahdlatul Ulama Al-Ghazali (UNUGHA) Cilacap. A quantitative approach with a one-group pretest–posttest design was employed. The participants consisted of 43 industrial engineering students who took part in industrial visits to PT Dirgantara Indonesia and the National Research and Innovation Agency (BRIN) in Bandung. Data were collected using Likert-scale questionnaires and analyzed through Paired Sample t-Test. The results reveal a significant increase in students’ understanding of production systems, with mean scores rising from 64.23 (pretest) to 81.47 (posttest) (p < 0.05). Similarly, critical thinking skills showed a significant improvement, increasing from a mean score of 63.05 to 83.12 (p < 0.05). These findings demonstrate that industrial visits have a substantial positive impact on enhancing students’ academic competencies. This study highlights the importance of systematically integrating industrial visits into the industrial engineering curriculum to strengthen learning outcomes and improve graduates’ readiness for industrial challenges.]]>
<![CDATA[Desain Rekayasa dan Analisis Struktur Tabung Plastic Melter Menggunakan Simulasi FEA ]]>
<![CDATA[ Mars: Jurnal Teknik Mesin, Industri, Elektro Dan Ilmu Komputer Vol. 4 No. 1 (2026): Februari: Mars: Jurnal Teknik Mesin, Industri, Elektro Dan Ilmu Komputer ]]>
Publisher : <![CDATA[Asosiasi Riset Teknik Elektro dan Informatika Indonesia ]]>
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DOI: 10.61132/mars.v4i1.1475
<![CDATA[Plastic waste has become one of the main environmental problems due to its nature, which is difficult to decompose naturally and can cause environmental pollution. One alternative waste treatment method that can be applied is to use a plastic melter to melt and recycle plastic waste into useful products. However, the design of plastic melters often lacks consideration of structural strength and safety aspects during the operation process. This study aims to design and engineer a plastic melter using the Finite Element Analysis (FEA) simulation approach to analyze structural resistance to thermal and mechanical loads that occur during the operation process. The research method was carried out through 3D design modeling of plastic melter components using Solidworks software, followed by analysis with FEA simulation on the main component, namely the melting tube. The parameters analyzed include the distribution of von Mises stress, the amount of displacement, and the safety factor. The analysis results show that the analyzed components experience von Mises stress distribution and displacement that are still below the material tolerance limits, with safety factor values above the recommended safety limits. Thus, the resulting plastic melter design is declared safe and can proceed to the manufacturing process. Therefore, the plastic melter design is safe, strong, and feasible to be realized as an effective and sustainable plastic waste processing technology solution.]]>
<![CDATA[Variasi Konsentrasi Inhibitor Kulit Bawang Merah 0 PPM, 100 PPM, 200 PPM, dan 300 PPM terhadap Nilai Laju Korosi Pipa Radiator ]]>
<![CDATA[ Mars: Jurnal Teknik Mesin, Industri, Elektro Dan Ilmu Komputer Vol. 4 No. 1 (2026): Februari: Mars: Jurnal Teknik Mesin, Industri, Elektro Dan Ilmu Komputer ]]>
Publisher : <![CDATA[Asosiasi Riset Teknik Elektro dan Informatika Indonesia ]]>
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DOI: 10.61132/mars.v4i1.1488
<![CDATA[This study investigates the effect of adding onion peel extract as a corrosion inhibitor on the corrosion rate and hardness of radiator pipes. The research employed an experimental method with inhibitor concentrations of 0 ppm, 100 ppm, 200 ppm, and 300 ppm. Corrosion rate testing was conducted using electrochemical methods, while hardness was measured using the Vickers method. The findings reveal that the addition of onion peel extract at a concentration of 300 ppm significantly reduced the corrosion rate to 0.081 mmpy, achieving an inhibition efficiency of 56.45%. Furthermore, the same concentration enhanced the surface hardness of radiator pipes to 255.403 Kgf/mm². These results demonstrate that onion peel extract has strong potential as an eco-friendly organic corrosion inhibitor. Its dual function in reducing corrosion and improving mechanical properties highlights its applicability in radiator pipe protection and sustainable engineering practices. The study contributes to the development of natural inhibitors as alternatives to synthetic chemicals, aligning with environmental preservation efforts and advancing green technology in material protection.]]>
