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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
Perancangan dan Pembuatan Mesin Pengaduk Sampah Organik Ignatius Aris Hendaryanto; Galuh Bahari; Radhian Krisnaputra
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.v9i1.2023

Abstract

Waste is a byproduct of production activities, both in the industrial and household sectors. Solid waste, commonly known as garbage, can be divided into organic and inorganic waste. Organic waste from households, such as food scraps and plant materials like wood, twigs, or leaves, can be converted into compost or organic fertilizer that has economic value. The process of organic waste treatment requires a mixer machine to blend the chopped waste with other additional materials. In this study, the design and construction of an organic waste mixer machine were carried out. The mixing mechanism uses two ribbon-shaped twisted (helical) blades that rotate in opposite directions. As they spin, they produce a rotating movement while shifting to the left and right, creating a more even mixing effect. The shaft and mixing blades are rotated by the main drive, a 1 hp single-phase electric motor with a speed of 1420 rpm. From the electric motor, the speed is reduced using a speed reducer gearbox with a 40:1 ratio, bringing the shaft and blade rotation speed to 35,5 rpm. The mixing force generated on the mixer blade is 752,6 N.
Bioetanol dari Limbah Sekam Padi sebagai Sumber Energi Terbarukan Intan Farhani; Indah Sawitri; Pramita Desi Hariningsih; Ida Farida; Omay Sumarna
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.v9i1.2052

Abstract

The purpose of this research is to make laboratory-scale bioethanol from agroindustrial waste, namely rice husk through hydrolysis, fermentation, and distillation methods, determine %yield, and characterize bioethanol. The method used was experimental. The results and conclusions obtained are bioethanol that smells like tape, colorless with %yield as much as 3,32%, density of 0.8818 g/mL, viscosity of 0.7408 cP, and blue flame formed during the flame test. Based on the characterization results, the bioethanol obtained has not met the SNI standards, which is suspected because it still contains water content caused by less pure ethanol from the distillation process.
Enhancing Mechanical Properties of Aluminum Matrix Composites Reinforced with Carbon Nanotubes: A Review of Fabrication Methods and Applications Nabila Desi Rahmawati; Immanuel Simanjuntak; Fikri Muzhaffar; Ade Kurniawan; Judika Butar-butar; Logo, Damai Logo
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.v9i1.2116

Abstract

This study reviews the fabrication methods and compositions of aluminum matrix composites reinforced with Carbon Nanotubes (CNTs), aiming to enhance the mechanical properties of aluminum composites. The methods analyzed include ball milling, spark plasma extrusion (SPE), and chemical vapor deposition (CVD), each showing unique advantages in improving tensile strength, hardness, wear resistance, and thermal conductivity. The study highlights significant findings, such as SPE's ability to address CNT agglomeration, ensuring a more homogeneous distribution, and increasing material density. Results also reveal the effectiveness of CNT coatings in improving electromagnetic shielding performance and thermal conductivity for extreme conditions. The significance of this research lies in identifying optimal fabrication techniques and compositions, offering valuable insights for advancing lightweight, high-strength materials in automotive, aerospace, and other industries. This study emphasizes the potential of Al-CNT composites as superior materials for industrial applications and the need for further exploration of hybrid fabrication methods and CNT types.
Lean Manufacturing dalam Reduksi Waste untuk Peningkatan Efisiensi Produksi Konektor Tipe X di PT XYZ Muhammad Kyodan Khalidzky; Winarno; Wildan Fatchan Maulidin
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

Abstract

Inefficient production processes can cause waste that results in delays, increased operational costs, and decreased productivity. Therefore, identifying and reducing waste is important in achieving better efficiency in the production process. This study aims to identify and reduce waste in the production process of type X connectors at PT XYZ by applying Lean Manufacturing principles. The methods used in this study include Value Stream Mapping (VSM) to map the production process flow and Process Activity Mapping (PAM) to analyze production activities in detail. The results of the analysis show that the largest waste occurs at the Operation stage (57.07%), followed by Transportation (26.65%) and Delays (10.89%). Based on the 5W + 1H analysis, it was found that the main causes of waste were the lack of measuring stations and inefficient warehouse layouts. Recommendations given include adding measuring stations, implementing IoT technology to automate data input, and optimizing warehouse layouts. The implementation of these improvements is expected to reduce waste, increase productivity, and help PT XYZ achieve production targets more efficiently.
REVIEW: Perkembangan Sel Surya Perovskite Noto Susanto Gultom; Ihsanul Mubarok; Hafsah Mutmainnah; Wina Mardhatillah; Ayi Bahtiar; Richie Estrada; Aisyah Amirah Fathinah
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.v9i1.2141

Abstract

Perovskite is one of the materials used for solar panels that offers high efficiency comparable to conventional silicon-based solar cells. This article aims to analyze the latest developments in perovskite solar cells from various important aspects, starting from material development, various fabrication techniques, as well as opportunities and challenges in its development. Perovskite is a type of material that has a crystal structure with the chemical formula ABX3. Perovskite fabrication can be done using various methods such as spin coating, spray coating, doctor blading, inkjet printing and others. In its development, various innovations have been made, such as the development of cells without a hole transport layer (HTL-free), the addition of ethylenediammonium cations (en), and efforts to replace lead with more environmentally friendly materials such as tin. The results of the study showed that the power conversion efficiency (PCE) of perovskite solar cells has reached more than 25%. Although this development is promising, there are still major challenges in maintaining the long-term stability of the device, especially related to degradation due to humidity, heat, and prolonged lighting. The development of fabrication techniques that can mass produce perovskite solar cells with high performance and stable reliability is essential. With continued research and material innovation, perovskite solar cells have great potential in supporting sustainable clean energy transitions such as their applications in building-integrated photovoltaic (BIPV) systems, wearable electronic devices, and agrivoltaic systems.
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.  

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