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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 155 Documents
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Pengendalian Kualitas Produk Menggunakan Cumulative Sum Control (cusum) dan Fuzzy Decision Making pada Proses Produksi Buku Tahunan di CV Renjana Offset Elly Wuryaningtyas Yunitasari; Esti Dwi Pujaningsih; Emmy Nurhayati
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.v9i1.2145

Abstract

CV Renjana Offset is a printing company that produces yearbooks for export. In the production process, various types of rejects were found in the pack products, such as scratches, glue, tears, and problematic pop-ups, as well as in book products, such as reversed arrangement, broken threads, and shadows. This study uses the Cumulative Sum Control (CUSUM) method to analyze product quality and the Fuzzy Analytic Hierarchy Process (FAHP) to determine improvement priorities. The results showed an average reject of 3.96% with a total of 35.66% from November 2023 to July 2024, although there was an increase to 4.74% in July 2024. The cumulative CUSUM of 0.143 units with a monthly average of 0.016 units indicates consistent quality, but improvements are needed in operators and materials. The proposed improvements aim to reduce rejects and improve quality through structured and sustainable improvement actions.
Desain Sistem Penjernihan Air Berbasis Tenaga Surya untuk Pengolahan Air Bersih Imaniah Sriwijayasih; Aang Wahidin; Priyambodo Nur Ardi Nugroho; Dika Rahayu Widiana; Sumardiono; Boedi Herijono; Rikky Leonard; Septaviola Dini Utami; Masaril Fatahilah; Cindy Putri Maharani
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.v9i1.2149

Abstract

A slow sand filter is a natural water filtration system that uses fine quartz-rich sand as a filter medium. The filtration process runs by gravity at a slow and even speed over the entire surface of the sand, involving physical, biochemical and biological processes simultaneously. To achieve the desired water quality, the filtration system was designed using 8" PVC pipes. The main aim of this design is to mature the filter sand media and form an effective filter skin layer, so that biochemical and biological processes can take place optimally. In this design, silica sand and gravel media are used for physical and chemical processes, while ultraviolet lamps are used to eliminate E.Coli bacteria in biological processes. The design results show that the resulting product meets the standards of PERMENKES No. 16 of 2005. Irradiation using a UV lamp for one hour shows a reduction in E. Coli bacteria by 29/100 ml. This shows that the longer the exposure, the less bacteria contained in river water. This system can operate for 5 hours with the help of a 100 Wp solar panel, 12 volt 18 Ah battery, and 50 watt DC pump, even just with sunlight. The efficiency of solar panels is greatly influenced by the intensity of sunlight, so the higher the intensity of the sun, the higher the efficiency produced.
Analisis Cacat Produk Dimensi Diameter Snap Tidak Standar pada Botol 100 ml Berbahan Dasar High-Density Polyethylene (HDPE) Achmad Afiq Ananda Putra; Widia Setiawan; Braam Delfian Prihadianto; Galuh Bahari
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.v9i1.2152

Abstract

Extrusion blow molding is a process used to form plastic bottles, with High-Density Polyethylene (HDPE) being the most commonly used material. A defect in the snap diameter that did not meet the standard was identified during the production of 100 ml bottles at PT X Jakarta, potentially reducing product quality and affecting its functionality. This study aims to identify the root causes of this defect and propose corrective actions and improvements to enhance product quality. The methodology includes using a Fishbone Diagram to determine the root causes, applying the 5W+1H analysis to develop corrective action proposals, and implementing the Poka-Yoke method as an improvement strategy. The findings indicate that the defects are caused by three main factors: human, method, and machine. Human-related factors include a lack of operator understanding of quality standards, insufficient training, and a limited number of technicians. Method-related factors involve inadequate maintenance and improper bottle handling, while machine-related factors include mold dimension changes, dirty die heads, and the need for machining parameter adjustments. The proposed corrective actions for human factors involve regular training, the provision of Standard Operating Procedures (SOPs), visual guidelines, and additional technicians. Machine-related improvements include periodic inspections, die head cleaning, and machining parameter testing, while method-related improvements focus on scheduled preventive maintenance and proper bottle runner arrangement. Further improvements involve implementing the Poka-Yoke method by installing an alarm siren that activates when air compressor pressure falls below the standard and adding markings to help operators better understand machine parameters during production.
Perancangan Mesin Pengering Kopi Otomatis dengan Arduino Uno Deni Hidayat; Siti Nur Istiqomah
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.v9i1.2159

Abstract

Processing of agricultural products, especially coffee, has an important role in the economy of rural communities. One of the main stages in coffee processing is the drying process, which aims to reduce the water content to an optimal level in order to maintain the quality of the coffee beans. In Mekar Buana Village, Tegalwaru District, Karawang, the drying process is still done manually, so it takes a long time and produces non-uniform quality. To overcome this problem, this research designed an automatic coffee drying machine based on Arduino Uno with the support of Internet of Things (IoT) technology. This machine allows automatic temperature and humidity settings and can be monitored remotely. Design analysis and static load stress testing were carried out using SolidWorks software to ensure the resistance of the machine structure to operational loads. The research results show that the designed machine is able to work optimally, increase the efficiency of drying time, and maintain the quality of coffee beans better than traditional methods. It is hoped that the implementation of this machine can increase the productivity of coffee farmers and support technological innovation in the agricultural sector.
Rancang Bangun Sistem Exhaust Fan Otomatis Berbasis Sensor DHT11 dan Mikrokontroler ESP32 untuk Peningkatan Kualitas Udara di Smoking Area Rifky Irfani; Achmad Aziz Rahmanto; Muhammad Edgar Gazazanata
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.v9i1.2161

Abstract

Air pollution in smoking areas can significantly impact human health and reduce indoor air quality. Poor ventilation systems often fail to respond to real-time environmental changes, leading to increased exposure to harmful particles. This research develops an automatic exhaust fan system utilizing a DHT11 sensor and an ESP32 microcontroller to optimize air circulation. The system activates when the temperature exceeds 27°C or humidity surpasses 60%, ensuring effective ventilation control. The study employs a prototyping approach consisting of system design, hardware and software implementation, and performance testing. Results indicate a 20% reduction in energy consumption compared to manual operation, highlighting the system's efficiency. The DHT11 sensor records a temperature deviation of ±0.5°C and a humidity accuracy of ±2%, confirming its reliability. This system not only improves air quality but also supports energy efficiency, making it a viable solution for enclosed smoking areas in public spaces.  
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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