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EKO BUDIYANTO
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ARMATUR : Artikel Teknik Mesin dan Manufaktur
Published by Universitas Muhammadiyah Metro
ISSN : 2722080X     EISSN : 27220796     DOI : https://doi.org/10.24127
Core Subject : Engineering,
Aerospace Engineering Automotive Engineering Engineering Industrial & Manufacturing Engineering Mechanical Engineering
ARMATUR : Artikel Teknik Mesin dan Manufaktur [ISSN (online) : 2722-0796, ISSN (cetak) : 2722-080X], merupakan jurnal terbitan berkala yang diterbitkan oleh Program Studi Teknik Mesin, Fakultas Teknik, Universitas Muhammadiyah Metro. ARMATUR terbit 2 kali dalam setahun bulan Maret dan September, memuat hasil-hasil penelitian dalam bidang Teknik Mesin dan Manufaktur. Dalam sekali penerbitan, ARMATUR memuat 5-10 artikel dengan 5-10 halaman per artikel. Proses penerimaan naskah jurnal sepenuhnya dilakukan melalui Online Journal Sistem (OJS).
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 165 Documents
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ANALYSIS OF THE IMPACT OF BEFORE AND AFTER OVERHAUL ON THE THERMAL EFFICIENCY OF THE MUARA KARANG PLTG GAS TURBINE USING A SANKEY DIAGRAM Anugerah Banjarnahor; Muhammad Ridwan; Hendri
ARMATUR : Artikel Teknik Mesin & Manufaktur Vol. 7 No. 1 (2026): Jurnal Armatur
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/armatur.v7i1.10394

Abstract

Gas turbine performance gradually degrades due to fouling, thermal stress, and component wear, leading to a reduction in thermal efficiency. Major overhaul is essential to restore performance close to design conditions. This study analyzes the impact of major overhaul on the thermal efficiency of Gas Turbine Unit 1.2 at Muara Karang Power Plant, focusing on maximum load operation at 90 MW. Actual operational data were processed using Brayton cycle thermodynamic principles to calculate net work output, fuel energy input, and overall thermal efficiency. Calculations were validated with Cycle Tempo and Engineering Equation Solver (EES), showing a deviation within 5%. Energy distribution and losses were visualized using Sankey diagrams to compare before and after overhaul conditions. Results indicate that thermal efficiency increased from 31.91% to 32.41% after overhaul, corresponding to a reduction in heat loss of approximately 2,950 kJ/s. The improvements were mainly associated with compressor recovery and reduced irreversibility in the combustor. These findings demonstrate that major overhaul is an effective maintenance strategy to improve thermal performance, while Sankey diagrams provide valuable insights into component-level energy losses for operational and maintenance decision-making.
Studi Eksperimental Pengaruh Parameter Pengeboran terhadap Karakteristik Burr pada Pengeboran Tulang Kortikal Arzaq Guruh Dityamri Arzaq; Gusri Akhyar Ibrahim; Muh Thohirin; Wisnaningsih; Syaipudin Anwar; An-Nisa Magnolia
ARMATUR : Artikel Teknik Mesin & Manufaktur Vol. 7 No. 1 (2026): Jurnal Armatur
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/armatur.v7i1.10934

Abstract

Cortical bone drilling represents an initial stage in orthopedic surgical procedures prior to implant screw insertion, where the quality of the drilled hole is strongly influenced by burr formation along the hole edges. Excessive burrs may increase the risk of tissue trauma, interfere with screw placement, and elevate the likelihood of postoperative complications. This study aims to investigate the effects of drilling parameters on burr characteristics during cortical bone machining and to determine the optimal parameter conditions that minimize burr formation. The research was conducted experimentally using fresh bovine cortical bone specimens and employed a Response Surface Methodology (RSM) experimental design. The investigated parameters included spindle speeds of 500, 1000, and 1500 rpm, feed rates of 35, 60, and 85 mm/min, and cooling conditions consisting of NaCl solution, Opsite Spray, and dry drilling. Drilling experiments were performed using a three-axis CNC machine, while burr characteristics were visually evaluated using a USB microscope. The results indicate that feed rate is the most influential parameter affecting burr formation, followed by spindle speed and cooling condition. Drilling conditions characterized by low feed rates, high spindle speeds, and the application of cooling fluids either NaCl solution or Opsite Spray produced smaller burrs and smoother hole-edge morphologies. The optimal condition was achieved through a specific combination of parameters that minimized burr formation, thereby demonstrating potential improvements in hole quality and procedural safety during cortical bone drilling.
Pengembangan sistem pengukuran dimensi kendaraan bermotor berbasis mikrokontroler ARIEF NOVIANTO; Nanang Okta Widiandar Nanang Okta Widiandar; Syaibani Ikhsan Syaibani Ikhsan; Agus Siswono Agus Siswono
ARMATUR : Artikel Teknik Mesin & Manufaktur Vol. 7 No. 1 (2026): Jurnal Armatur
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/armatur.v7i1.10971

Abstract

This research is an improvement of the previous prototype. The objective of this research is to develop a dimension measurement system that is easier, faster, lighter, more accurate, and more portable. Research and Development (R&D) methods were used to develop a tool that is in line with the research objectives. This tool works by emitting infrared rays from a distance sensor laser, which are then reflected on a reflector on the reflector rod. The data is processed using an ESP32 microcontroller, and the measurement results can be viewed on an LCD screen and printed using a thermal printer. The LCD module includes options for measuring two- and three-axle vehicles. The device is made of aluminium, making it lighter. It is easy to fold, and to improve accuracy, a laser is installed to ensure that the emitter rod and reflector are perpendicular to each other. A comparison of the dimensional measurements between this measuring device and a calibrated tape measure shows a significance value (P) of 0.227. With a significance value greater than 0.05, the results are considered not significantly different from the calibrated tape measure but with an easier and faster process.
Analisis Kekuatan Struktur Rangka Greenhouse Tipe Single Span Menggunakan Metode Finite Element Analysis Mas Wisnu Aninditya; Muhammad Salman Fadhil; Kemal Mahfud
ARMATUR : Artikel Teknik Mesin & Manufaktur Vol. 7 No. 1 (2026): Jurnal Armatur
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/armatur.v7i1.11013

Abstract

The structural integrity of greenhouse facilities is fundamental to agricultural safety and productivity, necessitating rigorous analysis of material stiffness and strength to withstand physical loads. This study evaluates the structural feasibility of a single-span greenhouse frame constructed from galvanized iron, specifically comparing the mechanical performance of a design integrated with "W" type support against a conventional frame without additional support. By employing SolidWorks for Finite Element Analysis (FEA), the research determined critical values for Von Mises stress, resultant displacement, and Factor of Safety (FoS). Simulation results revealed that the frame utilizing W-support exhibited superior rigidity, recording a maximum stress of 1.533×107 N/m2, a displacement of 1.105 mm, and a high Factor of Safety of 13.31. Conversely, the frame without W-support demonstrated increased mechanical susceptibility, yielding a maximum stress of 5.517 ×107 N/m2, a displacement of 5.554 mm, and a Factor of Safety of 3.697. Crucially, the stress values obtained for both configurations remained significantly below the galvanized iron's yield strength of 2.039 ×108 N/m2. Consequently, while the W-support design offers enhanced stability, both structural configurations are deemed safe and feasible for agricultural implementation.
Analisis Stabilitas Struktur Rangka Gudang terhadap Beban Hoist Crane 2 Ton Menggunakan Metode Finite Element Abshar Adi; Deri Teguh Santoso
ARMATUR : Artikel Teknik Mesin & Manufaktur Vol. 7 No. 1 (2026): Jurnal Armatur
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/armatur.v7i1.11049

Abstract

This study aims to conduct a comparative study of the loading capacity and stability of the main frame of the existing warehouse at PT. XYZ to accommodate the installation of a 2-ton hoist crane frame. The analysis is carried out by considering the static load generated by the hoist crane, including the self-weight of the crane frame, maximum lifting load, and shock factor. The methods used include collecting data on dimensions and materials of the existing warehouse frame, calculating the working loads, and modeling and structural analysis using finite element software. Several hoist crane frame installation configurations will be analyzed to identify the safest and most efficient option by considering the loading capacity limitations and stability requirements of the main frame of the warehouse. The results of this study are expected to provide clear recommendations regarding the feasibility of installing a 2-ton hoist crane on the existing warehouse frame, as well as identifying potential reinforcements that may be needed to ensure operational safety and structural integrity of the building. This comparative study will evaluate various aspects such as stress, deflection, and safety factors on the structural elements of the warehouse frame for each crane installation configuration, thus providing a strong basis for decision making at PT. XYZ. the structural elements of the warehouse frame for each crane installation configuration, thus providing a strong basis for decision making at PT. XYZ.
Analisis Komparatif Struktural Statis Handle Rem Sepeda Motor Sebelum dan Sesudah Optimasi Topologi Bagas Achmad Darmawan Bagas; Deri Teguh Santoso; Uji Burrahman; Rinaldi Suzatmiko; Edrianzah Rahmat
ARMATUR : Artikel Teknik Mesin & Manufaktur Vol. 7 No. 1 (2026): Jurnal Armatur
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/armatur.v7i1.11208

Abstract

Handle rem merupakan komponen krusial pada sepeda motor yang berperan menahan laju kendaraan. Penelitian ini bertujuan membandingkan respons struktural statis handle rem sebelum dan sesudah optimasi topologi menggunakan Finite Element Method (FEM). Simulasi dilakukan menggunakan software ANSYS dengan material Structural Steel yang diberi pembebanan statis sebesar 300 N. Parameter yang dievaluasi meliputi reduksi massa, deformasi, regangan elastis, tegangan ekuivalen, dan faktor keamanan. Hasil simulasi menunjukkan bahwa optimasi topologi berhasil mereduksi massa komponen sebesar kurang lebih 20%, dari 126,94 gram menjadi 101,52 gram. Pengurangan material ini menyebabkan peningkatan deformasi total yang sangat kecil, yakni sebesar 0,37%. Namun, terjadi peningkatan regangan elastis sebesar 132,6% dan lonjakan tegangan ekuivalen sebesar 185,84% (dari 70,91 MPa menjadi 202,69 MPa). Kondisi ini juga memicu penurunan safety factor sebesar 65,02%, dari 3,52 menjadi 1,23. Meskipun batas aman menurun dan tegangan meningkat, desain hasil optimasi terbukti lebih efisien dengan eliminasi material yang hanya terfokus pada area non-kritis, sehingga struktur penahan beban utama tetap utuh.
PENGARUH JENIS SAMPAH PLASTIK TERHADAP HASIL BAHAN BAKAR MINYAK PADA REAKTOR PIROLISIS Kemas Ridhuan; Riki Renaldi; Diego Armando
ARMATUR : Artikel Teknik Mesin & Manufaktur Vol. 7 No. 1 (2026): Jurnal Armatur
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/armatur.v7i1.11265

Abstract

Plastic waste has the disadvantage that it is difficult to decompose, so efforts are made to utilize it by converting it into fuel. One method that can be done is using the pyrolysis method, which is a decomposition process with little or no air. The purpose of this study was to determine the effect of the type of plastic waste on fuel oil yield and to determine the effect of time and temperature on the type of plastic in the pyrolysis process on a side stove. The research method used was experimental using types of plastic waste raw materials, namely Polyethylene Terephthalate (PET), Low Density Polyethylene (LDPE), and Polypropylene (PP). Using LPG as fuel. Using a condenser with two horizontal straight pipes. The results of this study indicate that variations in waste types affect fuel oil yield, temperature and combustion time. The highest temperature in the reactor occurred in the PP plastic variation with a temperature reaching 191°C with a combustion time of 195 minutes, and the lowest temperature in the reactor occurred in the LDPE and PET plastic variations with the highest temperature only reaching 184°C with a combustion time of 189 minutes for LDPE and 191 minutes for PET plastic. The highest amount of plastic oil was obtained from PET plastic waste, namely 331 grams, and the lowest amount was obtained from LDPE plastic waste, namely 305 grams.
Rancang Bangun Mesin Pembusa dengan Variasi Bibit Pembusa An-Nisa Magnolia; nurcahya nugraha; rizal nazarudin nazarudin; ferly citra ardiansyah
ARMATUR : Artikel Teknik Mesin & Manufaktur Vol. 7 No. 1 (2026): Jurnal Armatur
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/armatur.v7i1.11198

Abstract

This study aims to design and develop a foam generator for the production of lightweight construction materials. The primary focus is to analyze the impact of varying ratios between water and foaming agent on the density of the foam produced. The developed device is expected to produce stable foam with precise control over its density and bubble size. The research involves designing, assembling, and testing different mixtures of foaming agents. The results show that increasing the volume of the foaming agent leads to higher foam density, smaller bubble size, and closer spacing between bubbles. The optimal ratio found in this study is 1000 ml foaming agent to 19000 ml water, which produced the densest and most homogeneous foam. At this ratio, the foam exhibits smaller bubbles and tightly packed distribution, resulting in a material with sufficient structural strength and low density. The findings provide a foundation for further development of more efficient and stable foam generators, offering potential for producing environmentally friendly and cost-effective lightweight construction materials.
Perancangan Ulang Produk Kruk Dengan Metode Quality Function Deployment Untuk Memenuhi Kebutuhan Penyandang Disabilitas Kaki Apriani, Ratna; Emirbuwono Basuki, Demas
ARMATUR : Artikel Teknik Mesin & Manufaktur Vol. 7 No. 2 (2026): Jurnal Armatur (in Progress)
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/armatur.v7i2.10738

Abstract

The population of persons with disabilities in Indonesia is currently estimated at approximately 22.97 million individuals, representing around 8.5% of the national population. Among this group, persons with lower-limb disabilities constitute the largest proportion, accounting for roughly 38% of all individuals with disabilities. This category of disability is frequently associated with significant challenges in mobility, including difficulties in walking, ascending stairs, and performing other related movements. Consequently, lower-limb disability users commonly depend on assistive devices such as crutches to support their daily activities. However, complaints often arise when using crutches, one of which is the difficulty of using crutches when traveling, whether by motorcycle or car, due to the elongated size of the device. To address these issues, a Quality Function Deployment (QFD) approach was employed to redesign the crutch in accordance with user needs. Based on this study, improvements were made in two aspects: economic and ergonomic. The product was adjusted to ensure that the price is acceptable to users. In addition, a redesign of the crutch dimensions was carried out, resulting in an increase in height. This modification aims to enhance ergonomic comfort and prevent potential secondary health problems for the users
Studi Komparatif Variasi Ketebalan Pelat Baja ASTM A36 pada Main Steel sebagai Penopang Baterai Rofiqah Sabila Hidayat Hidayat; Muhaji; Dedy Wahyudi; Ardan Nagra Coutsar; Dian Prasetyawati
ARMATUR : Artikel Teknik Mesin & Manufaktur Vol. 7 No. 2 (2026): Jurnal Armatur (in Progress)
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/armatur.v7i2.10995

Abstract

This simulation aims to conduct a comparative study of variations in the thickness of ASTM A36 steel plates to determine the most optimal thickness for supporting the load of batteries, which are currently a critical energy source. The analysis focuses on the values of von Mises stress, displacement, and safety factor. Battery supports are the primary focus of this study, which will compare variations in optimal thickness for batteries that typically require thicknesses of up to 3 to 4 mm; in this simulation, a thinner and optimal solution will be sought. As technology advances and the demands of manufacturing digitalization grow, production processes are increasingly utilizing simulations in Computer-Aided Engineering (CAE) software, making conventional testing more efficient. Using SolidWorks software simulation, a static analysis was conducted to evaluate each variation. ASTM A36 steel plates measuring 1400 mm in length, 70.6 mm in width, and with thicknesses of 1 mm, 2 mm, and 3 mm were selected to accommodate the battery weight. Three battery blocks, each weighing 5 kg, were used in this simulation. ASTM A36 material was selected because it has a high yield strength of 250 MPa. In addition to the parameters mentioned above, dynamic loads with variations of 1.5G and 2G will also be calculated. The optimal strength of the battery mount was determined through simulation in SolidWorks. The results of each thickness variation were then analyzed using a comparative study to determine the optimal thickness based on a comparison of von Mises stress, displacement, and safety factor. Ultimately, the optimal thickness was determined to be 3 mm, with von Mises stress reduced by 32.8% to 82 MPa. Displacement was reduced by 1.08% compared to the two previous variations, specifically 12 mm at the center of the plate. The optimal dynamic load stress occurs at a thickness of 3 mm.

Page 15 of 17 | Total Record : 165

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