cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
Andri Nofiar
Contact Email
garuda@apji.org
Phone
+6285885852706
Journal Mail Official
febri@apji.org
Editorial Address
Perum Cluster G11 Nomor 17 Jl. Plamongan Indah, Kadungwringin, Pedurungan, Semarang, Provinsi Jawa Tengah, 50195
Location
Kota semarang,
Jawa tengah
INDONESIA
Mars: Jurnal Teknik Mesin, Industri, Elektro dan Ilmu Komputer
Published by Asosiasi Riset Teknik Elektro Dan Informatika Indonesia
ISSN : 30318750     EISSN : 30318742     DOI : 10.61132
Core Subject : Science,
Computer Science & IT
Mars : Jurnal Teknik Mesin, Industri, Elektro Dan Ilmu Komputer memuat naskah hasil-hasil penelitian di bidang Teknik Mesin, Industri, Elektro Dan Ilmu Komputer
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 286 Documents
 25   26   27   28   29 
Studi Kelayakan Penerapan Panel Surya pada PJU Menggunakan Metode Life Cycle Cost dan Payback Period
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 : Asosiasi Riset Teknik Elektro dan Informatika Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/mars.v4i1.1446

Abstract

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.
Simulasi CFD Berbasis Single Particle pada Proses Fast Pyrolysis Biomassa Kulit Kopi Menggunakan Reaktor Screw untuk Optimasi Produksi Gas
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 : Asosiasi Riset Teknik Elektro dan Informatika Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/mars.v4i1.1469

Abstract

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.
Hubungan Kunjungan Industri dengan Peningkatan Pemahaman Sistem Produksi dan Kemampuan Berpikir Kritis Mahasiswa Fakultas Teknologi Industri UNUGHA Cilacap
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 : Asosiasi Riset Teknik Elektro dan Informatika Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/mars.v4i1.1470

Abstract

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.
Desain Rekayasa dan Analisis Struktur Tabung Plastic Melter Menggunakan Simulasi FEA
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 : Asosiasi Riset Teknik Elektro dan Informatika Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/mars.v4i1.1475

Abstract

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.
Variasi Konsentrasi Inhibitor Kulit Bawang Merah 0 PPM, 100 PPM, 200 PPM, dan 300 PPM terhadap Nilai Laju Korosi Pipa Radiator
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 : Asosiasi Riset Teknik Elektro dan Informatika Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/mars.v4i1.1488

Abstract

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.
Pengembangan Desain Alat Pirolisis Tipe Fast Pyrolysis dengan Reaktor Screw Bertingkat untuk Pengolahan Kulit Kopi
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 : Asosiasi Riset Teknik Elektro dan Informatika Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/mars.v4i1.1489

Abstract

Pyrolysis is a biomass conversion method into fuel through heating at high temperatures under oxygen-limited conditions. The main factors influencing the pyrolysis process include temperature, residence time, pressure, particle size, reactor design, and the type of pyrolysis employed. This study aims to design an auger-type fast pyrolysis system based on previous research. The design and modeling of the fast pyrolysis equipment were carried out using Autodesk Inventor 2021 software. Based on the calculation and design results, a fast pyrolysis reactor with a multi-stage configuration and a capacity of 5.2 kg was developed. The system consists of a three-stage reactor made of Stainless Steel 304. The reactor is equipped with a screw conveyor for material transport, which is driven by an electric motor. Biomass heating inside the reactor is provided by a clamp heater with an electrical power requirement of 611 W, while biomass cooling is performed using a condenser with a cooling water capacity of 15.586 liters. Based on the structural simulation results, the maximum von Mises stress obtained was 35.4 MPa, the maximum displacement was 0.0528 mm, and the safety factor was 6.07 under loading conditions including an internal reactor pressure of 0.32 MPa, a torsional moment of 1,130 kg·mm, and an operating temperature of 700 °C. These values are within the allowable limits of the material, indicating that the designed reactor is structurally safe and feasible for use.
Pengukuran Beban Kerja pada Karyawan Non Organik Grup A di PT XYZ dengan Metode SOFI dan SDS
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 : Asosiasi Riset Teknik Elektro dan Informatika Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/mars.v4i1.1493

Abstract

The most valuable asset of a company is its employees due to their performance. The performance of PT. XYZ in recent times has tended to decline due to the heavy workload on Group A non-organic employees, which has resulted in reduced employee productivity. This study aims to determine the workload value and the level of fatigue experienced by Group A non-organic employees at PT. XYZ using the SOFI and SDS methods. It also aims to recommend efforts to reduce the workload and stress levels for Group A non-organic employees at PT. XYZ. This study is a descriptive qualitative research using interview methods and distributing questionnaires to 18 non-organic employees of group A. The results of the study indicate that the analysis of workload (fatigue) measurement using the SOFI method obtained a physical fatigue level among non-organic employees of group A at PT. XYZ with an average total score of 4.61, which means that the employees experienced a workload (fatigue) level categorized as moderate. Meanwhile, the analysis of work stress measurement using the SDS method obtained an average total score of 14, indicating that the stress level among non-organic employees of group A at PT. XYZ falls in the moderate category.
Pembuatan Paku Payung Panjang 50 mm, Diameter 2,5 mm, Tebal Pelat Payung 1,2 mm Kapasitas 300 Biji/Jam
Mars: Jurnal Teknik Mesin, Industri, Elektro Dan Ilmu Komputer Vol. 4 No. 2 (2026): April : Mars: Jurnal Teknik Mesin, Industri, Elektro Dan Ilmu Komputer
Publisher : Asosiasi Riset Teknik Elektro dan Informatika Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/mars.v4i2.1608

Abstract

The problem lies in the quality of the umbrella nails for asbestos or zinc roofs which often experience damage to the nail head is not large enough, the tip of the nail is blunt, thus damaging the roof material, and susceptibility to corrosion due to weather, and slow manual production. The purpose of making is to obtain umbrella nails with a length of 50 mm and a diameter of 2.5 mm which are strong, pointed tips, relatively fast. The manufacturing method includes: making cylindrical umbrella pieces from 2 mm thick aluminum with a diameter of 25 mm and a 1.5 mm hole center, selecting raw materials for low carbon steel wire, AISI 1020 in the form of a 3 mm diameter coil, straightening and reducing the cross-section of wire using a die (wire drawing),, forming the nail head (cold heading), mechanically cutting the pointed end, forming the nail umbrella from cylindrical pieces that have been inserted with 50 mm long nails and pressed, immersing the umbrella nails in 500oC zinc liquid (galvanizing) for 2 minutes, checking dimensions and quality standards. The manufacturing results are in the form of strong zinc-coated thumbtacks measuring 50 mm in length, 2.5 mm in diameter, 1.2 mm in thickness of the thumbtack plate, total production cost of IDR 340/unit, and process duration of 12 seconds/unit, which implies that the need for strong and corrosion-resistant thumbtacks can be met for various related engineering needs.
Produksi Blok Silinder Aluminium Cor Diameter 54,5 mm x Langkah 59 mm Kapasitas 2 Unit/Jam
Mars: Jurnal Teknik Mesin, Industri, Elektro Dan Ilmu Komputer Vol. 4 No. 2 (2026): April : Mars: Jurnal Teknik Mesin, Industri, Elektro Dan Ilmu Komputer
Publisher : Asosiasi Riset Teknik Elektro dan Informatika Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/mars.v4i2.1609

Abstract

. The manufacturer's discontinuation of original spare parts for the 149 cm3 two-stroke cylinder block has had a significant impact, resulting in a shortage of products sought by consumers, creating a market gap for local manufacturers to produce spare parts with equivalent and competitive quality. The production objective is to obtain an ADC12 cast aluminum cylinder block with a diameter of 54.5 mm x a stroke of 59 mm. The production method includes: a series of systematic steps of 3D scanning of the cylinder block for geometric accuracy, making a Resin Sand Casting (RSC) mold whose size has been increased due to the shrinkage percentage ADC12-Machining-Pattern removal slope, making a core for the hollow part from RSC material, a melting process using an LPG furnace in parallel stages using 2 RSC molds, natural cooling for about 60 minutes, cutting the casting bowl channel and cutting the riser, T6 heat treatment, and quality and dimensional inspection. The production results are in the form of an ADC12 cast aluminum cylinder block with a diameter of 54.5 mm x stroke of 59 mm, the tensile strength after heat treatment is around 300 MPa, the total production cost is IDR 375,000/unit, and the process duration is 30 minutes/unit which implies that the need for a cylinder block volume of 149 cm3 for two-stroke motorcycles (takt) can be met, so that this type of motorcycle can be used again.
Pembuatan Penggantung Pakaian Bahan Kawat Aluminium Diameter 3 mm, Panjang 45 cm, Kapasitas 50 Biji/Jam
Mars: Jurnal Teknik Mesin, Industri, Elektro Dan Ilmu Komputer Vol. 4 No. 2 (2026): April : Mars: Jurnal Teknik Mesin, Industri, Elektro Dan Ilmu Komputer
Publisher : Asosiasi Riset Teknik Elektro dan Informatika Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/mars.v4i2.1610

Abstract

The general metal clothes hanger that is still made manually is not strong enough as a problem faced. The purpose of making is to obtain a clothes hanger made of aluminum wire with a diameter of 3 mm with a length of 45 cm that is light and strong enough. The manufacturing method includes: clothes hanger design, making a bender in the form of a jig from semi-automatic clothes bending steel, preparing raw materials for AA1100 type aluminum wire with a diameter of 3 mm, preparing bending tools and labor, cutting 3 mm diameter wire with a length of 100 cm, bending the wire into a clothes hanger, finishing according to orders painted or anodized or left in natural color, quality and dimension inspection, and packaging. The manufacturing results are clothes hangers made of aluminum wire with a diameter of 3 mm, a length of 45 cm weighing 150 g which can withstand a load of around 2 kg, a total production cost of IDR 2319/unit, and a process duration of 72 seconds/unit which implies that the manufacturing is feasible to be applied to small and medium scale industries or businesses.

Page 27 of 29 | Total Record : 286

 25   26   27   28   29 

Filter by Year

2023 2026


Reset
Filter By Issues
All Issue Vol. 4 No. 4 (2026): Agustus : Mars: Jurnal Teknik Mesin, Industri, Elektro Dan Ilmu Komputer Vol. 4 No. 3 (2026): Juni : Mars: Jurnal Teknik Mesin, Industri, Elektro Dan Ilmu Komputer Vol. 4 No. 2 (2026): April : Mars: Jurnal Teknik Mesin, Industri, Elektro Dan Ilmu Komputer Vol. 4 No. 1 (2026): Februari: Mars: Jurnal Teknik Mesin, Industri, Elektro Dan Ilmu Komputer Vol. 3 No. 6 (2025): Desember: Mars: Jurnal Teknik Mesin, Industri, Elektro Dan Ilmu Komputer Vol. 3 No. 5 (2025): Oktober: Mars: Jurnal Teknik Mesin, Industri, Elektro Dan Ilmu Komputer Vol. 3 No. 4 (2025): Agustus: Mars: Jurnal Teknik Mesin, Industri, Elektro Dan Ilmu Komputer Vol. 3 No. 3 (2025): Juni: Mars: Jurnal Teknik Mesin, Industri, Elektro Dan Ilmu Komputer Vol. 3 No. 2 (2025): April: Mars: Jurnal Teknik Mesin, Industri, Elektro Dan Ilmu Komputer Vol. 3 No. 1 (2025): Februari: Mars: Jurnal Teknik Mesin, Industri, Elektro Dan Ilmu Komputer Vol. 2 No. 6 (2024): Desember: Mars: Jurnal Teknik Mesin, Industri, Elektro Dan Ilmu Komputer Vol. 2 No. 5 (2024): Oktober: Mars: Jurnal Teknik Mesin, Industri, Elektro Dan Ilmu Komputer Vol. 2 No. 4 (2024): Agustus: Mars: Jurnal Teknik Mesin, Industri, Elektro Dan Ilmu Komputer Vol. 2 No. 3 (2024): Juni: Mars: Jurnal Teknik Mesin, Industri, Elektro Dan Ilmu Komputer Vol. 2 No. 2 (2024): April: Mars: Jurnal Teknik Mesin, Industri, Elektro Dan Ilmu Komputer Vol. 2 No. 1 (2024): Februari: Mars: Jurnal Teknik Mesin, Industri, Elektro Dan Ilmu Komputer Vol. 1 No. 4 (2023): Agustus: Mars: Jurnal Teknik Mesin, Industri, Elektro Dan Ilmu Komputer More Issue