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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 147 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 Banjarnahor, Anugerah; Ridwan , Muhammad; Hendri
ARMATUR : Artikel Teknik Mesin & Manufaktur Vol. 7 No. 1 (2026): Jurnal Armatur (in Progress)
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, Arzaq Guruh Dityamri; Ibrahim, Gusri Akhyar; Thohirin, Muh; Wisnaningsih; Anwar, Syaipudin; Magnolia, An-Nisa
ARMATUR : Artikel Teknik Mesin & Manufaktur Vol. 7 No. 1 (2026): Jurnal Armatur (in Progress)
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 (in Progress)
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 Aninditya, Mas Wisnu; Fadhil, Muhammad Salman; Mahfud, Kemal
ARMATUR : Artikel Teknik Mesin & Manufaktur Vol. 7 No. 1 (2026): Jurnal Armatur (in Progress)
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 Adi, Abshar; Teguh Santoso, Deri
ARMATUR : Artikel Teknik Mesin & Manufaktur Vol. 7 No. 1 (2026): Jurnal Armatur (in Progress)
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, Bagas Achmad Darmawan; Teguh Santoso, Deri; Burrahman, Uji; Suzatmiko, Rinaldi; Rahmat, Edrianzah
ARMATUR : Artikel Teknik Mesin & Manufaktur Vol. 7 No. 1 (2026): Jurnal Armatur (in Progress)
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 Ridhuan, Kemas; Renaldi, Riki; Armando, Diego
ARMATUR : Artikel Teknik Mesin & Manufaktur Vol. 7 No. 1 (2026): Jurnal Armatur (in Progress)
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.

Page 15 of 15 | Total Record : 147

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