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Jurnal Engine: Energi, Manufaktur, dan Material
Published by Universitas Proklamasi 45 Yogyakarta
ISSN : 25797433     EISSN : 25797433     DOI : http://dx.doi.org/10.30588/jeemm
Core Subject : Science, Engineering,
Control & Systems Engineering Energy Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering
Jurnal Engine: Energi, Manufaktur, dan Material is registered with ISSN 2579-7433 (online) on The Indonesian Institute of Sciences (LIPI). This journal is under publishment of the Mechanical Engineering Department, Universitas Proklamasi 45 Yogyakarta. It is a scientific journal focusing on Energy, Manufacturing, Material, Mechanical, and Software Simulation. It provides a publishing platform for scientists and academicians to share, publish, and discuss all aspects of the latest outstanding development in the field of Mechanical Engineering.
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 15 Documents
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Search results for , issue "Vol. 9 No. 1 (2025)" : 15 Documents clear
Analisis Faktor yang Menyebabkan Downtime pada Mesin Injector Freon di Divisi Refrigerator PT. XYZ Achmad Azis Rahmanto; Rifki Irfani; Lazuardi Allan Suryawan
Jurnal Engine: Energi, Manufaktur, dan Material Vol. 9 No. 1 (2025)
Publisher : Proklamasi 45 University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30588/jeemm.v9i1.2162

Abstract

The freon injector machine is a crucial component in the production line at PT. XYZ, responsible for refrigerant injection. However, frequent downtime disrupts production efficiency. This study aims to analyze the factors causing downtime in the freon injector machine at PT. XYZ, focusing on Coupler component failures. Using the PDCA method and fishbone diagram analysis, the primary causes were identified across human, method, machine, and material factors. Installation and removal errors contributed to human-related issues, while the absence of preventive maintenance resulted in reactive component replacement. Machine-related factors included component wear and latch failure, whereas material-related issues stemmed from a lack of understanding of load limits, leading to faster wear. The SMART method was used to validate corrective measures. Implementing better maintenance strategies, including scheduled preventive maintenance and increased technician awareness, is expected to significantly reduce downtime and enhance production efficiency.
Analisis Pengaruh Variasi Parameter Mesin CNC Lasser Cuting terhadap Hasil Pemotongan Material SPHC 5 mm di PT. XYZ Mochammad Rajib El Atros; Hadi Nurwahyudin; Mohadly Satya Permadi
Jurnal Engine: Energi, Manufaktur, dan Material Vol. 9 No. 1 (2025)
Publisher : Proklamasi 45 University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30588/jeemm.v9i1.2163

Abstract

This study analyzes the effect of parameter variations on CNC Laser Cutting machines on the cutting quality of 5 mm SPHC material at PT. XYZ. The tested parameters include cutting speed, laser power, gas pressure, and the type of gas used. The research methods involve literature review, observation, and experiments with variations in cutting parameters. The results show that the proper combination of parameters significantly affects cutting quality, including edge cleanliness, oxidation levels, and surface quality. The use of high-pressure nitrogen produces cleaner and neater cuts compared to oxygen, which tends to cause oxidation. Additionally, cutting speed and laser focus position also have a significant impact on the final results. This study emphasizes that optimizing parameters in CNC Laser Cutting machines can improve efficiency and precision in the SPHC material cutting process, leading to better results in the manufacturing industry.
Analisis Pengaruh Pengaturan Parameter pada CNC Cutting Laser terhadap Kualitas Hasil Pemotongan pada Material Stainless Steel 304 di PT X: Hadi Nurwahyudin; Mochammad Rajib El Atros; Mualif
Jurnal Engine: Energi, Manufaktur, dan Material Vol. 9 No. 1 (2025)
Publisher : Proklamasi 45 University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30588/jeemm.v9i1.2164

Abstract

The advancement of manufacturing technology continues to drive optimization in material cutting processes, one of which is the use of CNC Laser Cutting machines. This study aims to analyze the effect of varying cutting parameters on the quality of Stainless Steel 304 cutting results at PT X. The parameters examined include cutting speed, laser power, gas pressure, and focal point. Experiments were conducted by adjusting these parameters and evaluating the results based on dimensional accuracy, surface cleanliness, and cutting quality. The findings indicate that an optimal combination of parameters can enhance cutting quality by reducing defects such as dimensional inaccuracies, rough surfaces, and oxidation on the cutting edges. The study concludes that proper parameter settings are crucial for improving production efficiency and final product quality in the manufacturing industry.
Analisis Konsentrasi dan Karakteristik Mikroplastik di Kawasan Wisata Pantai Congot Desa Jangkaran Kabupaten Kulon Progo Bela Agustina Eka Putri Kusniati; Trisno Fallo; Muhammad Noviansyah Aridito; Andri Prasetyo Nugroho; Putri Ratna Setyowati
Jurnal Engine: Energi, Manufaktur, dan Material Vol. 9 No. 1 (2025)
Publisher : Proklamasi 45 University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30588/jeemm.v9i1.2171

Abstract

Congot Beach is a tourist area that is also inhabited by many fishermen. The issue of plastic waste on this beach is quite serious, with a large amount of waste being discarded by visitors, local residents, and fishermen. Additionally, Congot Beach is located near the estuary of the Bogowonto River, which serves as a major pathway for microplastics entering the ocean. This study aims to analyze the concentration and characteristics of microplastics in the Congot Beach Tourist Area, Jangkaran Village, Kulon Progo Regency. This research employs microscopy and Fourier-transform infrared spectroscopy (FTIR) methods to identify the concentration, shape, color, and polymer types of microplastics found at the study site. The study results indicate that the range of microplastic concentrations at Congot Beach, Kulon Progo, based on calculations from NOAA, sensitivity studies, and mean values, is 1672 particles/L (Negative Study) – 2090 particles/L (Mean) – 2508 particles/L (Positive Study). These results are categorized as an emergency pollution level according to the Guidelines for the Monitoring and Assessment of Plastic Litter in the Ocean (GESAMP). The characteristics of the microplastics found include fragment shapes (53.3%), film (31.8%), fiber (11.2%), and pellet (3.6%). The dominant colors of the microplastics are transparent (34.4%), green (26.6%), and black (25.8%). The identified polymer types of microplastics are High-Density Polyethylene (HDPE) and Polypropylene (PP).
Studi Pengaruh Variasi Partikel Shotpeening terhadap Struktur Mikro dan Sifat Mekanis pada Aluminium Paduan Wartono; Rivan Muhfidin; Eka Yawara; Sumpena
Jurnal Engine: Energi, Manufaktur, dan Material Vol. 9 No. 1 (2025)
Publisher : Proklamasi 45 University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30588/jeemm.v9i1.2189

Abstract

The objective of this research is to find out the effect of shotpeening particle variations on the microstructure, tensile strength, and impact strength of friction stir welding (FSW) joints. In the weld metal area after the material is subjected to friction stir welding (FSW), the material will experience softening and a decrease in mechanical properties compared to the raw material. The shotpeening process on the weld metal surface is expected to improve mechanical properties, because the weld metal surface will experience repeated pressure from the shotpeening particles as a forging effect. Friction welding (FSW) is carried out on materials made of 6061 aluminum alloy and the material has a thickness of 3 mm, with butt joint welding. The friction welding process uses an Aciera brand milling machine, the feeding speed on the machine is set to 18 mm / minute and the spindle rotation is 910 rpm. Shotpeening particles use steel ball and aluminum oxide, namely S 230, Al 24, Al 54. The results of microstructure testing show that the forging effect of shotpeening causes deformation in the surface layer to a depth of 700 µm. The results of tensile testing on FSW joints with variations in shotpeening particles: S 230, Al 24, Al 54 show the optimum tensile strength in shotpeening with Al 54 particles of 208 MPa, and the results of impact testing show the optimum impact price in shot peening with S 230 particles of 0.57 J / mm2.

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