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Jurnal Ilmiah Teknik Mesin, Elektro dan Komputer
Published by Lembaga Pengembangan Kinerja Dosen
ISSN : 28090802     EISSN : 28090799     DOI : 10.51903
Core Subject : Engineering,
Electrical & Electronics Engineering Engineering Mechanical Engineering
Jurnal Imliah Teknik Mesin, Elektro dan Komputer merupakan jurnal ilmiah yang menyajikan artikel orisinal tentang pengetahuan dan informasi riset atau aplikasi riset dan pengembangan terkini dalam bidang teknologi. Ruang lingkup Jurnal Juritek meliputi bidang Informatika, Teknik Mesin, Teknik Elektro, Sistem Informasi dan Teknik Industri. Artikel yang masuk akan melalui proses seleksi mitra bestari dan/atau editor. Jurnal Juritek diterbitkan oleh Lembaga Pengembangan Kinerja Dosen terbit 3 kali dalam setahun, yaitu pada bulan Maret, Juli dan November
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 304 Documents
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Pengaruh Tinggi dan Berat Badan Pengemudi terhadap Kenyamanan Ergonomi Mobil Listrik 2 KW Barata Berdasarkan Metode RULA Andre Setiawan; Asroful Abidin; Mokh. Hairul Bahri
Jurnal Ilmiah Teknik Mesin, Elektro dan Komputer Vol. 6 No. 2 (2026): Juli: Jurnal Ilmiah Teknik Mesin, Elektro dan Komputer
Publisher : Lembaga Pengembangan Kinerja Dosen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51903/juritek.v6i2.7430

Abstract

The BARATA 2 kW electric car is a compact electric vehicle developed to support energy efficiency and research activities. The limited cabin space in this vehicle has the potential to affect driver comfort due to differences in anthropometric characteristics, particularly height and weight. This study aims to analyze the influence of driver height and weight on ergonomic comfort in the 2 kW BARATA electric car using the Rapid Upper Limb Assessment (RULA) method. The study involved 30 participants, with data collected on height, weight, elbow angle, and knee angle. The anthropometric data were used to model the driver’s posture in CATIA V5 software, followed by an ergonomic analysis using the RULA method and statistical testing using SPSS. The results showed that 80% of the respondents obtained RULA scores in the 3–4 range, which falls into the category requiring further investigation, while 20% of the respondents obtained scores of 5–6, indicating the need for posture improvement. Partial test results showed that height did not have a significant effect on the RULA score with a significance value of 0.815, while body weight had a significant effect with a significance value of 0.000. In addition, the results of the simultaneous test indicate that height and weight together have a significant effect on the driver’s ergonomic comfort. Thus, the cabin design of the 2 kW BARATA electric car has been able to accommodate most drivers, but still requires refinement to improve the user’s ergonomic comfort
Performance Evaluation of a Radio-Based Emergency Communication System for Mountain Hiking Applications Anggraini, Elsa; Simarmata, Togi; Rayesa, Mohammad; Fikri, Muhammad; Fatih, Muhammad
Jurnal Ilmiah Teknik Mesin, Elektro dan Komputer Vol. 6 No. 2 (2026): Juli: Jurnal Ilmiah Teknik Mesin, Elektro dan Komputer
Publisher : Lembaga Pengembangan Kinerja Dosen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51903/juritek.v6i2.7435

Abstract

Reliable communication is essential for mountain hiking activities, particularly in emergency situations where cellular networks are often unavailable. This study evaluates the performance of a radio-based emergency communication system designed to transmit GPS location data from multiple transmitter nodes to a single receiver using a multipoint-to-point communication scheme. The main contribution of this work is the field-based evaluation of a practical communication system capable of delivering location information from multiple users in mountainous environments without relying on cellular infrastructure. Field experiments were conducted using handheld radios operating in the 400–470 MHz frequency band under both line-of-sight (LOS) and non-line-of-sight (NLOS) conditions. The results show that the system achieved maximum communication distances of 834.40 m and 648.03 m under LOS conditions, while NLOS communication was maintained up to 279.00 m and 277.18 m. In addition, the transmitted GPS coordinates were successfully received and displayed at the monitoring station with positional differences of only a few meters compared to a reference GPS application. These results demonstrate that the proposed system can provide a practical and reliable solution for emergency communication and location monitoring in mountainous environments.
Karakterisasi Respons Elektrikal-Termal Transien LED COB pada Modul Aluminium Berbasis CNC terhadap Variasi Arus Muhammad Rasyid Putera Agung; Ida Nurcahyani
Jurnal Ilmiah Teknik Mesin, Elektro dan Komputer Vol. 6 No. 2 (2026): Juli: Jurnal Ilmiah Teknik Mesin, Elektro dan Komputer
Publisher : Lembaga Pengembangan Kinerja Dosen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51903/juritek.v6i2.7437

Abstract

Chip-on-board (COB) LEDs in high-power lighting systems require thermal characterization because temperature rise can affect forward voltage, electrical power, optical stability, and system reliability. This study aims to characterize the transient electrical-thermal response of a COB LED mounted on a CNC-based aluminum module under current variation. The experiment was conducted using a constant-current (CC) power supply with a voltage compliance of 37 V. Seven current levels from 0.20 A to 0.50 A were tested for approximately 7200 s, with three repetitions performed at each current level. The measurement system recorded the actual forward voltage, measured current, calculated electrical power, module temperature, and local ambient temperature. The thermal response was analyzed using the temperature difference between the module and local ambient, while the late-time thermal response was represented by the average temperature rise during the last 30 minutes of each test. The results show that increasing current increased the calculated electrical power from approximately 6.68 W to 18.00 W and increased the late-time temperature rise from 13.39 °C to 45.27 °C. A linear empirical model between electrical power and late-time temperature rise produced  with . These results indicate a clear electrical-thermal relationship in the tested module, although not all current levels reached full steady-state within the test duration. Therefore, the findings are interpreted as transient and late-time thermal characteristics rather than universal steady-state behavior
Studi Awal Pemilihan Polimer untuk Digunakan Pada Injectivity dengan Skala Laboratorium Setiawan, Agung; Adnan, Ahmad Zaelani; Kamid, Abdul; Widiantoro, Panca Suci; Yasahardja, Yustian
Jurnal Ilmiah Teknik Mesin, Elektro dan Komputer Vol. 6 No. 2 (2026): Juli: Jurnal Ilmiah Teknik Mesin, Elektro dan Komputer
Publisher : Lembaga Pengembangan Kinerja Dosen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51903/juritek.v6i2.7441

Abstract

Enhanced Oil Recovery (EOR) merupakan metode perolehan minyak tahap lanjut yang diterapkan ketika metode produksi primer dan sekunder tidak lagi memberikan hasil yang ekonomis. Salah satu metode EOR yang banyak digunakan adalah polymer flooding, yaitu injeksi polimer untuk meningkatkan viskositas fluida injeksi dan memperbaiki rasio mobilitas antara fluida pendorong dan minyak reservoir. Keberhasilan metode ini sangat dipengaruhi oleh pemilihan polimer yang sesuai dengan kondisi reservoir. Oleh karena itu, penelitian ini bertujuan untuk mengevaluasi dan menentukan polimer yang paling sesuai berdasarkan serangkaian pengujian laboratorium. Penelitian dilakukan di Pusat Penelitian dan Pengembangan Teknologi Minyak dan Gas Bumi (PPPTMGB) “LEMIGAS” menggunakan tiga sampel polimer, yaitu polimer A, B, dan C. Tahapan pengujian meliputi uji kompatibilitas, pengukuran viskositas, uji stabilitas termal pada temperatur 60°C selama 30 hari, serta uji injectivity menggunakan core Berea. Hasil penelitian menunjukkan bahwa seluruh sampel polimer mengalami penurunan viskositas selama pengujian stabilitas termal. Namun, polimer B dengan konsentrasi 2.000 ppm menunjukkan penurunan viskositas paling kecil, yaitu dari 9,58 cP menjadi 7,44 cP setelah 30 hari pengujian. Oleh karena itu, polimer B dipilih untuk uji injectivity. Hasil uji injectivity menunjukkan adanya peningkatan tekanan injeksi yang diikuti dengan penurunan permeabilitas core Berea akibat adsorpsi dan retensi polimer pada media berpori. Secara keseluruhan, polimer B menunjukkan kinerja terbaik pada kondisi pengujian dan dinilai paling sesuai untuk aplikasi polymer flooding menggunakan air formasi sintetik Lapangan X pada temperatur 60°C.
Analisis Pengaruh Peningkatan Volume Water Basin Tank Cooling Tower terhadap Efisiensi Kinerja Main Gas Blower di PT. XYZ Taruna, Robert Candra; Lisa Puspita Ariyanto; Putri Sundari
Jurnal Ilmiah Teknik Mesin, Elektro dan Komputer Vol. 6 No. 2 (2026): Juli: Jurnal Ilmiah Teknik Mesin, Elektro dan Komputer
Publisher : Lembaga Pengembangan Kinerja Dosen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51903/juritek.v6i2.7453

Abstract

The efficiency of cooling systems is highly critical in energy industries and industrial processes, particularly in the production of liquid sulfuric acid (H₂SO₄) which relies heavily on operational efficiency. A key factor determining overall plant efficiency is temperature control in critical components. Failure to dissipate heat effectively can result in performance degradation, increased energy consumption, and equipment damage. Increasing the volume of the cooling tower basin water beyond the minimum required limit is intended to stabilize cold water temperatures or enhance the performance efficiency of both the Cooling Tower (CT) and the Main Gas Blower (MGB). This study quantitatively analyzes the impact of comparing the manufacturer's standard Water Basin Tank (WBT) volume against a modified volume on the operational efficiency parameters of the CT and MGB to validate the optimal operational threshold. The results indicate that the standard manufacturer's water basin yields an average range of 5.3°C, an approach of 10.78°C, an effectiveness of 50.79%, a cooling capacity of 0.9 m³°C/h, and an evaporation loss of 1.6 m³/h. Meanwhile, the modified water basin shows an average range of 6.5°C, an approach of 8.4°C, an effectiveness of 76.95%, a cooling capacity of 1.1 m³°C/h, and an evaporation loss of 1.9 m³/h. As a result of the cooling tower performance, the use of the manufacturer's WBT results in a cooling temperature of 37.5°C, an output power of 2,676.3 kW, an efficiency of 63.6%, and a power loss of 1,530.5 kW. Conversely, the modified WBT demonstrates a cooling temperature of 35.4°C, an output power of 3,725.2 kW, an efficiency of 88.6%, and a power loss of 481.6 kW. The comparison reveals that a lower cooling tower temperature leads to a higher output power, greater efficiency, and lower power loss in the MGB. Based on these findings, the LBC 250 Cooling Tower with a modified water basin demonstrates superior performance for use as a cooling system for the Main Gas Blower at the Acid Plant of PT. XYZ
Analisis Beban Statis Pada Desain Chassis Mobil Listrik Bha-rata 2KW Aqilah Zulfa Azzahra; Nely Ana Mufarida; Irawati Irawati; Nurhalim Nurhalim
Jurnal Ilmiah Teknik Mesin, Elektro dan Komputer Vol. 6 No. 2 (2026): Juli: Jurnal Ilmiah Teknik Mesin, Elektro dan Komputer
Publisher : Lembaga Pengembangan Kinerja Dosen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51903/juritek.v6i2.7475

Abstract

Universitas Muhammadiyah Jember, dengan sasis yang berfungsi sebagai komponen struktural utama yang menanggung beban statis. Pemilihan bahan sasis yang tepat sangatlah penting; oleh karena itu, penelitian ini bertujuan untuk menganalisis pengaruh tegangan, perpindahan, dan faktor keamanan (FOS) pada baja AISI 4340 guna menentukan kesesuaian bahan tersebut sebagai sasis yang optimal. Metode yang digunakan adalah simulasi beban statis dengan SolidWorks pada desain sasis tunggal menggunakan baja AISI 4340, dilengkapi dengan perhitungan sistematis untuk validasi. Hasil simulasi menunjukkan bahwa material tersebut menghasilkan tegangan aksial sebesar 0,58847 N/cm² dan perpindahan rata-rata sebesar 0,00458645 cm, yang menunjukkan ketahanan deformasi yang baik dalam kondisi beban statis. Nilai Faktor Keamanan (FOS) yang diperoleh adalah 1,20652, jauh melebihi batas keamanan minimum. Dengan demikian, baja AISI 4340 terbukti valid dan optimal sebagai bahan sasis untuk Mobil Listrik Bharata 2KW karena memiliki kekuatan luluh tertinggi dan FOS terbesar, sehingga memberikan keamanan struktural terbaik.
Pengaruh Produksi Bioetanol Melalui Fermentasi Oleh Ampas Tebu Dengan Variasi Penambahan Ragi Terhadap Nilai Kalor Dan Kadar Bioetanol A.Wahid Al Farisi; Asroful Abidin; Mokh. Hairul Bahri
Jurnal Ilmiah Teknik Mesin, Elektro dan Komputer Vol. 6 No. 2 (2026): Juli: Jurnal Ilmiah Teknik Mesin, Elektro dan Komputer
Publisher : Lembaga Pengembangan Kinerja Dosen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51903/juritek.v6i2.7489

Abstract

The increasing energy demand and depleting fossil fuel reserves drive the development of eco-friendly alternative energy sources, such as bioethanol. Sugarcane bagasse, an agro-industrial waste with high lignocellulosic content, holds great potential for processing into bioethanol feedstock. Therefore, this study was conducted to examine the impact of varying dosages of Saccharomyces cerevisiae yeast on bioethanol production from sugarcane bagasse through fermentation, while also determining the most effective dosage. This research employed a laboratory experimental method utilizing three yeast dosage variations: 5 grams, 10 grams, and 15 grams. The fermentation process was carried out for 10 days, followed by four stages of distillation. The evaluation focused on four main parameters: moisture content, yield, bioethanol concentration, and calorific value. Based on the experimental results, oven-drying effectively reduced the moisture content of the sugarcane bagasse from 72% to 28%. Furthermore, it was found that an increase in yeast quantity was directly proportional to the concentration of the resulting bioethanol. The optimum result was achieved using 15 grams of yeast, which yielded a bioethanol concentration of up to 94% after the fourth distillation and recorded the highest calorific value at 2187.19 Cal/gram. In conclusion, increasing the yeast mass optimizes the fermentation process, thereby producing higher bioethanol concentrations and calorific values. This confirms that sugarcane bagasse holds great promise as a sustainable and eco-friendly feedstock for bioethanol production
Pengaruh Variasi Posisi Duduk Driver Mobil Listrik Terhadap Kenyamanan Dan Resiko Kerja Junet Rimet; Nely Ana Mufarida; Latifa Mirzatika Al-Rosyid; Nurhalim Nurhalim
Jurnal Ilmiah Teknik Mesin, Elektro dan Komputer Vol. 6 No. 2 (2026): Juli: Jurnal Ilmiah Teknik Mesin, Elektro dan Komputer
Publisher : Lembaga Pengembangan Kinerja Dosen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51903/juritek.v6i2.7493

Abstract

Pengembangan kendaraan listrik memerlukan penerapan prinsip-prinsip ergonomi dalam desain kabin untuk meningkatkan kenyamanan pengemudi dan mengurangi risiko gangguan muskuloskeletal. Kendaraan listrik BHARATA, yang dikembangkan oleh mahasiswa Teknik Mesin di Universitas Muhammadiyah Jember, memerlukan evaluasi ergonomi untuk menentukan posisi mengemudi yang paling nyaman dan aman. Studi ini bertujuan untuk menganalisis pengaruh variasi posisi tempat duduk terhadap kenyamanan pengemudi dan risiko ergonomi menggunakan metode Rapid Upper Limb Assessment (RULA). Pendekatan kuantitatif deskriptif digunakan dengan empat variasi jarak tempat duduk ke setir: 42 cm, 37 cm, 32 cm, dan 27 cm. Data diperoleh melalui pemodelan kabin menggunakan SolidWorks dan simulasi postur menggunakan CATIA V5, diikuti dengan penilaian ergonomi menggunakan metode RULA. Hasil menunjukkan bahwa jarak tempat duduk 42 cm, 37 cm, dan 32 cm menghasilkan skor RULA 4, menunjukkan tingkat risiko ergonomi moderat, sedangkan jarak 27 cm menghasilkan skor RULA 5, menunjukkan risiko ergonomi yang lebih tinggi yang memerlukan tindakan korektif. Analisis komparatif mengungkapkan bahwa jarak 37 cm memberikan skor postur paling seimbang untuk lengan atas, lengan bawah, pergelangan tangan, leher, dan batang tubuh, menjadikannya posisi duduk paling ergonomis. Studi ini menunjukkan bahwa metode RULA efektif untuk mengevaluasi risiko ergonomis dan dapat berfungsi sebagai referensi untuk mengembangkan desain kabin kendaraan listrik yang lebih aman, lebih nyaman, dan mendukung kesehatan pengemudi.
Pengaruh Persentase Katalis Zeolit Alam terhadap Karakteristik Minyak Hasil Pirolisis Campuran PP-LDPE Mochammad Mashud Okta Kusuma; Mokh Hairul Bahri; Asroful Abidin
Jurnal Ilmiah Teknik Mesin, Elektro dan Komputer Vol. 6 No. 2 (2026): Juli: Jurnal Ilmiah Teknik Mesin, Elektro dan Komputer
Publisher : Lembaga Pengembangan Kinerja Dosen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51903/juritek.v6i2.7504

Abstract

Natural zeolite is a crystalline aluminosilicate mineral that has pores and is often used as a catalyst in the pyrolysis process of plastic waste. Zeolite consists of a three-dimensional framework formed by SiO4 and AlO4 tetrahedrons, creating a distinctive microporous pore network with a large surface area and high adsorption capacity. This study aims to determine the effect of the percentage of natural zeolite catalyst on the combustion rate and oil density of the pyrolysis results of PP-LDPE pure mixture. This study is experimental and the process uses catalytic pyrolysis with natural zeolite catalyst in four different percentages, namely 0% (as a control), 5%, 10%, and 15% of the total mass of plastic input, where each experiment uses 3 kg of plastic as the main material. The study was conducted by heating PP and LDPE samples at a temperature of 250°C in the absence of oxygen for 120 minutes. The results of this study indicate that there is a volume variation in each catalyst mixture, indicating that increasing the pyrolysis catalyst has a positive effect on the amount of liquid fraction produced. A 15% natural zeolite catalyst yielded a maximum yield of 576 ml, equivalent to a 650% increase compared to pyrolysis without a catalyst (0%).
Pengaruh Variasi Bed Temperature Proses 3D Printing Terhadap Visual Produk Berbahan Dasar Filament PLA Hilmi Raharjo; Asroful Abidin; Nely Ana Mufarida
Jurnal Ilmiah Teknik Mesin, Elektro dan Komputer Vol. 6 No. 2 (2026): Juli: Jurnal Ilmiah Teknik Mesin, Elektro dan Komputer
Publisher : Lembaga Pengembangan Kinerja Dosen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51903/juritek.v6i2.7506

Abstract

Teknologi 3d printing dengan metode Fused Deposition Modeling (FDM) semakin berkembang dalam berbagai sektor industri karena fleksibilitas desain dan efisiensi materialnya. Penelitian ini bertujuan untuk menganalisis pengaruh variasi bed temperature terhadap visual produk, kekuatan bending, dan cacat porositas pada hasil cetakan 3d printing berbahan filament Polylactic Acid (PLA). Spesimen uji bending dibuat mengacu pada standar ASTM D790 dengan variasi bed temperature 30°C, 40°C, 50°C, dan 60°C, serta parameter lainnya dibuat konstan. Pengujian bending dilakukan menggunakan Universal Testing Machine (UTM) HT-2402, sedangkan pengamatan porositas dilakukan menggunakan digital microscope. Hasil penelitian menunjukkan nilai load bending tertinggi diperoleh pada bed temperature 50°C dengan rata-rata 45,20 N, sedangkan nilai terendah pada bed temperature 40°C sebesar 42,37 N. Hasil analisis One Way ANOVA menunjukkan nilai F_hitung sebesar 1,29 dan P-value 0,342 (> 0,05), yang mengindikasikan bahwa variasi bed temperature tidak memberikan pengaruh signifikan terhadap kekuatan bending filament PLA. Pengamatan mikroskopis menunjukkan adanya cacat porositas pada seluruh spesimen dengan jumlah bervariasi antara 1-4 porositas pada setiap variasi suhu. Penelitian ini menyimpulkan bahwa meskipun variasi bed temperature 30°C-60°C tidak berpengaruh signifikan terhadap kekuatan bending, suhu 50°C memberikan performa mekanik terbaik dan seluruh variasi menghasilkan produk dengan tingkat porositas yang bervariasi.

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