cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
EKO BUDIYANTO
Contact Email
ummetroarmatur@gmail.com
Phone
+6282280245320
Journal Mail Official
ekobudiyantoiyan@gmail.com
Editorial Address
Jl. Ki Hajar Dewantara No. 116, 15A Iringmulyo, Metro Timur, Kota Metro, Lampung
Location
Kota metro,
Lampung
INDONESIA
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 177 Documents
 14   15   16   17   18 
Kajian Penghematan Komsumsi Energi Dengan Menggunakan Energy Value Stream Mapping (EVSM) di Industri Otomotif Riyadi Juhana; Muhammad Ramdhani
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.v7i2.11826

Abstract

Electrical waste problems often occur in the automotive industry, particularly in the vehicle painting process within the Paint Shop, which consists of Deck Cleaning Pre, Pre-Treatment & Electro Deposition (PT-ED), Dry Sanding I & UBS, Surface, Dry Sanding II, Top Coat Booth, and Paint Finishing. Estimated electrical waste occurs in PT-ED section and the oven. PT-ED comprises 9 processing tanks that often experience idle time while waiting for vehicle bodies to be processed. This situation occurs because when body 1 and body 2 are processed in PT-ED, body 1 should be in tank 4 while body 2 in tank 1. However, in implementation, body 1 is already in tank 6 while body 2 remains in tank 1, causing tanks 2 through 5 to become idle. The objective of this research is to utilize Energy Value Stream Mapping and Finite State Machine models. The results indicate that workstations in the Paint Shop still experience waste in electrical consumption. This is evidenced by the following ratios: Tva = 0.6, Tnva = 0.27, Tnva/n = 0.04, EIva = 0.55, EInva = 0.10, EInva/n = 0.35, Eva = 0.8, Enva = 0.07, Enva/n =e 0.12, Cva = 0.8, Cnva = 0.07, Cnva/n = 0.12.
Analisis Penyimpangan Fasa dan Sifat Mekanik pada Baja Paduan Hasil Pengecoran Konvensional di Bengkel Tenayan Pekanbaru Agung Laksono Yudho; Farhan Anggriawan
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.v7i2.11865

Abstract

This research addresses metallurgical challenges in engineering the microstructure of as-cast products caused by the slow cooling rates and non-uniform phase distribution inherent to sand casting. This study aims to evaluate the effect of alloying elements on the microstructural and mechanical properties of as-cast steel specimens (SP1, SP2, and SP3). Characterization was performed via metallographic observation of dendritic morphology and flake graphite distribution, followed by micro-Vickers hardness and tensile elongation testing. The results reveal an inversely proportional trade-off between surface hardness and material strain capability. Specimen SP2 exhibited the highest hardness 397.77 + 9.02 HV due to a rigid, interlocking dendritic network, which heightened the internal notch sensitivity of the graphite phase and triggered premature brittle fracture with a minimum elongation of 8.1 %. Conversely, SP1 yielded the best matrix homogeneity and lowest hardness 316.00 + 1.25 HV, effectively distributing local stresses to achieve the highest elongation 17.3 %, while SP3 showed a transitional behavior. Future work recommends utilizing an induction furnace and applying post-casting heat treatment to optimize alloy toughness.
Pengembangan Filamen 3D Printing dari Strip Sampah Plastik Polyethylene Terephthalate Daur Ulang Muhammad Ali Chandra; Muh. Farid Hidayat
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.v7i2.11927

Abstract

Polyethylene Terephthalate (PET) plastic waste is one of the most common types of waste whose volume continues to increase and poses a significant threat to the environment. This study aims to develop 3D printing filament from recycled PET bottle strips and evaluate the effect of printing parameters on the quality of printed parts produced using Fused Deposition Modeling (FDM) technology. An experimental method was employed, consisting of cleaning, drying, cutting PET bottles into strips measuring 8–12 mm, filament extrusion at a temperature of 220°C, and specimen printing using nozzle temperature variations of 255°C, 265°C, 275°C, and 285°C, combined with bed temperatures of 50°C and 70°C. The results showed that the produced filament had a diameter ranging from 1.65 to 1.80 mm, which is close to the standard diameter of commercial filament (1.75 mm). The quality of the printed parts was influenced by the combination of nozzle and bed temperatures.
Kerangka Terintegrasi Pareto–FMEA–FTA untuk Pengendalian Kualitas Berbasis Risiko pada Pemesinan Komponen Presisi: Studi Kasus Manufaktur Spinning Spinnerette Alya Rahma Putri; Supriyati; Fibi Eko Putra
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.v7i2.12036

Abstract

This study aims to identify the dominant defect types, analyze potential failure modes and their associated Risk Priority Numbers, determine the root causes of primary failures, and formulate corrective action recommendations for the machining process of spinning spinnerette products at PT XYZ, Cikarang, Indonesia. A mixed-methods approach was employed, integrating Pareto Chart analysis, Failure Mode and Effect Analysis (FMEA), and Fault Tree Analysis (FTA) sequentially. Data were collected through field observation, structured interviews, FMEA questionnaires, and company documentation covering the period January–December 2025. Pareto Chart analysis revealed that rough surface defects (37.50%), non-conforming hole diameter (25.00%), and clogged holes (20.00%) collectively accounted for 82.50% of total recorded defects. FMEA yielded the highest Risk Priority Number for the rough surface failure mode (RPN = 240), while micro-crack defects recorded the highest Severity rating (S = 9), with an estimated financial loss of IDR 50,000,000.00 per unit. FTA identified that rough surface defects originate from the interaction of four primary factors: cutting tool condition, process parameters, operator competency, and production environment control. The 5W+1H-based corrective recommendations formulated in this study have the potential to reduce financial losses by up to IDR 476,000,000.00 annually and may be adopted as a risk-based quality control model applicable to analogous precision component manufacturing industries.
Analisis Efisiensi Termal Sebelum dan Sesudah Overhaul Turbin Inspection Di PLTGU Blok 3 Unit 2 PT PLN Nusantara Power UP Gresik Muhammad Naufal Hardiansyah; Muhammad Ridwan
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.v7i2.11194

Abstract

This study analyzes the thermal efficiency performance of a Combined Cycle Power Plant (PLTGU) at PT PLN Nusantara Power, Gresik Generation Unit, focusing on Gas Turbine GT 3.2 in Block 3 Unit 2. The objective is to compare turbine performance before and after an overhaul (Turbine Inspection/TI). The research is driven by increasing electricity demand and the gradual degradation of gas turbine components due to operating hours, such as fouling and mechanical wear, which can increase fuel consumption and reduce efficiency. Thermal efficiency, based on the Brayton cycle theory, is used as the main performance indicator and is defined as the ratio of net work output to heat input (Qin). This research applies a field study method with a comparative before–after approach using actual operational data. The analyzed parameters include temperature, pressure, fuel flow rate, and lower heating value (LHV) at loads of 100 MW and 103 MW. Data processing and calculations were performed using Microsoft Excel. The results indicate that thermal efficiency improved after the overhaul. At 100 MW, efficiency increased from 30.5450% to 31.4085%, while at 103 MW it rose from 30.7662% to 31.4256%. Turbine output power also increased by 4.7 MW (4.55%). Overall, the overhaul positively restored turbine performance and improved thermal efficiency.
ANALISIS PENGARUH VARIASI SUDUT ELEKTRODA E7018 TERHADAP KEKUATAN TARIK SAMBUNGAN LAS SMAW PADA BAJA JIS G3101 SS400 UNTUK KOMPONEN RANGKA ATAP KOPERASI MERAH PUTIH Budi Santoso; Muhammad Hanif Abu Zakki
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.v7i2.12161

Abstract

This study aims to analyze the effect of E7018 electrode angle variations at 60°, 75°, and 90° on the tensile strength of SMAW welded joints on JIS G3101 SS400 steel applied as roof frame components of the Koperasi Merah Putih. SS400 steel is one of the most widely used structural materials in building construction due to its adequate mechanical properties and ease of welding. The SMAW process was selected for its flexibility and efficiency in field applications. Welding was performed using an E7018 electrode with a diameter of 3.2 mm at a constant current of 100 A, V-groove 45° joint preparation, 1G flat position, and a material thickness of 6 mm. The research method employed is a quantitative experimental approach with tensile testing conducted in accordance with the ASTM E8 standard. Each electrode angle variation used three specimens, resulting in a total of nine test specimens that were consistently prepared and tested. The test results indicate that the 75° electrode angle produced the highest tensile strength of 429.33 MPa, followed by the 90° angle at 388.00 MPa, and the lowest value recorded at the 60° angle with 370.33 MPa. These differences in tensile strength values are attributed to the influence of electrode angle on the quality of weld penetration and fusion formed during the welding process. The 75° electrode angle proved to produce the most optimal penetration and fusion, and is therefore recommended as the best welding parameter for SS400 steel roof frame components using the SMAW process.
Analisis Pengaruh Penambahan Material Komposit Serat Kulit Durian Terhadap kekuatan Impak Batubata Christina Bastian; Yoel Pasae; Yafet Bontong; Yous Yamhin
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.v7i2.12427

Abstract

Brick is a durable, water-resistant construction material that reduces rainwater seepage through walls and offers fire resistance, making it safer to use. This study aims to analyze the effect of adding durian husk fiber to bricks. Durian husk fiber was selected due to its high cellulose content and potential as an eco-friendly natural reinforcing agent. Fiber treatment involved cold smoking (at 35°C–45°C) for varying durations—no smoking, 5 hours, 10 hours, 15 hours, and 20 hours—to enhance surface quality and bonding with the matrix. An experimental method was employed, utilizing varying volume fractions of clay, durian husk fiber, and cassava starch: 50%:10%:40%, 50%:20%:30%, and 50%:30%:20%. Specimens were fabricated using the hand lay-up method and oven-dried for one hour at 200°C. Impact strength was assessed using the Charpy Impact Test method in accordance with ASTM D5942-96 standards. The results indicate that the highest absorbed energy value (13.096 Joules) was achieved with the 50%:30%:20% volume fraction and a 5-hour smoking treatment, while the lowest value (6.976 Joules) was observed with the 50%:20%:30% volume fraction and a 10-hour smoking treatment. Similarly, the highest impact strength value (0.163 J/mm²) was recorded for the 50%:30%:20% volume fraction with 5 hours of smoking, and the lowest (0.087 J/mm²) for the 50%:20%:30% volume fraction with 10 hours of smoking. These findings demonstrate that material composition significantly influences brick toughness, where an optimal fiber addition enhances energy absorption and inhibits crack propagation. It can be concluded that a volume fraction composition of 50%:30%:20% represents the optimum condition for enhancing the impact strength of composite bricks based on durian husk fibers and a cassava starch matrix. An excessive increase in fiber fraction tends to reduce impact strength due to diminished matrix bonding and increased material porosity.

Page 18 of 18 | Total Record : 177

 14   15   16   17   18 

Filter by Year

2020 2026


Reset
Filter By Issues
All Issue Vol. 7 No. 2 (2026): Jurnal Armatur (in Progress) Vol. 7 No. 1 (2026): Jurnal Armatur Vol. 5 No. 2 (2024): ARMATUR: Artikel Teknik Mesin dan Manufaktur Vol. 5 No. 1 (2024): Jurnal Armatur Vol. 4 No. 2 (2023): Jurnal Armatur Vol 4 No 1 (2023): Jurnal Armatur Vol 3 No 2 (2022): Jurnal Armatur Vol 3 No 1 (2022): Jurnal Armatur Vol 2 No 2 (2021): Jurnal Armatur Vol. 2 No. 1 (2021): Jurnal Armatur Vol. 1 No. 2 (2020): Jurnal Armatur Vol. 1 No. 1 (2020): Jurnal Armatur More Issue