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JURUTERA (Jurnal Umum Teknik Terapan)
Published by Universitas Samudra
ISSN : 23565438     EISSN : 23565438     DOI : https://doi.org/10.55377/jurutera.v10i02.8268
Core Subject : Engineering,
Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Engineering Mechanical Engineering
Jurnal Ilmiah Jurutera menerbitkan dalam berbagai topik dalam bidang rekayasa dan sains yang dapat dikategorikan kedalam tema-tema berikut: - Teknik Elektro dan Informatika - Teknik Geologi dan Pertambangan - Teknik Arsitektur dan Perencanaan Wilayah dan Kota - Teknik Mesin dan Industri - Teknik Sipil dan Lingkungan - Teknik Perkapalan, Sistem Perkapalan, dan Kelautan - Multidisiplin
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 10 Documents
 1 
Search results for , issue "Vol 12 No 01 (2025)" : 10 Documents clear
Analysis of Spindle Rotation Speed on Turning Results in CQ 6236 Lathe Machine Fiqri, M. Shyadul; Arif Adlie, Taufan; Bahri Widodo, Syamsul
JURUTERA - Jurnal Umum Teknik Terapan Vol 12 No 01 (2025)
Publisher : Fakultas Teknik Universitas Samudra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55377/jurutera.v12i01.10818

Abstract

The selection of turning speed is very important because the turning process affects the quality of the work, especially in the metal industry and small or medium-sized industries. To meet production needs, the rotational speed of the lathe can be adjusted to various spindle speed levels. Variations in speed will cause the workpiece to differ in terms of flatness and smoothness. The turning process begins with a linear motion along the axis of the AISI 1040 steel workpiece, with a slow feed of 2 mm. Smooth and even results were obtained at speeds of 80 rpm, 105 rpm, 160 rpm, 250 rpm, 380 rpm, 480 rpm, 750 rpm, and 1200 rpm. The turning test was conducted once with a diameter of 25 mm. The surface roughness from the turning process is influenced by various factors, including the spindle speed and the cutting angle used. Each workpiece processed on the machine tool certainly produces a different surface roughness. This research aims to determine the effect of the cutting angle and spindle speed on the surface roughness of AISI 1040 carbon steel. The Experimental Method is more suitable for this research to determine the effect of surface roughness and spindle rotation on AISI 1040 steel specimens. The material used has a diameter of 25 mm and a length of 80 mm, with a cutting depth of 2 mm. Meanwhile, the spindle speeds used were 1200 rpm, 750 rpm, 480 rpm, 380 rpm, 250 rpm, 160 rpm, 105 rpm, and 80 rpm. Surface roughness was measured using a surface roughness tester. The research results showed that the lowest surface roughness value in the specimen testing with a spindle speed of 1200 rpm was 0.679 µm, while the highest surface roughness was obtained at a spindle speed of 80 rpm, which was 5.260 µm. The conclusion of this research is that spindle speed affects the surface roughness value, where a smaller cutting angle results in a rougher surface, and a higher spindle speed results in a smoother surface.
Sprinkler Irrigation System Planning for Horticulture Agriculture at Universitas Samudra Through Hydraulic Simulation and Operational Investment Cost Optimization Wahyudi, Andri; A. Abdullah, Nasruddin; Amin, Muhammad; Amir, Fazri
JURUTERA - Jurnal Umum Teknik Terapan Vol 12 No 01 (2025)
Publisher : Fakultas Teknik Universitas Samudra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55377/jurutera.v12i01.10821

Abstract

The sprinkler irrigation system of horticultural agriculture at Universitas Samudra is able to increase the efficiency of water use when the climate change phenomenon hits. However, sprinkler irrigation requires quite high operational investment costs. The purpose of the planning is to obtain the design of the sprinkler irrigation network and optimize the operational investment costs of irrigation. The method used is hydraulic simulation of irrigation using variations in centrifugal and submersible transfer pump power and PVC pipe size. Furthermore, the results of the irrigation simulation were analyzed using the Taguchi method. The planning results show that the sprinkler irrigation network covers an area of 7,500 with an elevation of 6-8 meters above sea level. The water requirement for 53 sprinklers is 8.48 liters/second, and the total water requirement for horticultural plants is 2,063.2 per season. The use of a combination that can optimize the operational investment costs of irrigation is the use of centrifugal transfer pump power (0.6 kW), submersible transfer pump power (0.6 kW), and PVC pipe sizes of 1/2, 1, 1 1/2, and 2 inches. This combination produces an optimum water pressure prediction of 1.756 bars and produces an optimum electricity usage cost prediction per day of Rp. 30,350. By using centrifugal transfer pump power, submersible and low-capacity PVC pipe size makes it more cost-efficient compared to other combinations.
The Effect of Phase Change Material (PCM) on Efficiency and Productivity in Tubular Solar Distillation Using a Parabolic Trough Collector Miftanul Syubban, Teuku; Amin, Muhammad; Azuar Rizal, Teuku
JURUTERA - Jurnal Umum Teknik Terapan Vol 12 No 01 (2025)
Publisher : Fakultas Teknik Universitas Samudra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55377/jurutera.v12i01.11149

Abstract

This study investigates the effect of Phase Change Material (PCM) on temperature, efficiency, and productivity. The prototype solar distillation system is tube-shaped, with a length of 50 cm and a diameter of 4 inches, using a parabolic trough collector. The PCM used is beeswax, which is wrapped in aluminum foil. The results show that the use of PCM improves freshwater productivity. On the first day, the PCM method showed an 11% increase in production, and on the second day, freshwater production increased by 13%. The production rate with PCM was 0.76 L/m²/day, compared to the conventional method, which had a rate of 0.67 L/m²/day. The system with PCM also achieved high efficiency, reaching 11,47% on the first day and 13,9% on the second day. The system remained stable in the afternoon and evening, maintaining temperatures above 35 °C at night, compared to the system without PCM, where the temperature dropped to 30 °C. The use of PCM significantly enhanced the overall performance of the distillation system.
Enhancing Cocoa Bean Drying Efficiency Using an Indirect Solar Dryer with Silica Gel Integration Muhammad Wildan Alkhair; Bahri Widodo, Syamsul; Abdullah, Nazaruddin; Syntia, Rita
JURUTERA - Jurnal Umum Teknik Terapan Vol 12 No 01 (2025)
Publisher : Fakultas Teknik Universitas Samudra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55377/jurutera.v12i01.11173

Abstract

Indonesia is one of the world's largest cocoa producers; however, traditional cocoa bean drying methods pose significant challenges, including weather dependency and contamination risks. This study aims to enhance the drying efficiency and product quality by employing an indirect solar dryer integrated with silica gel as a humidity reducer. Experimental research was conducted in the open field area of the Faculty of Engineering, Universitas Samudra, Langsa. The results demonstrate that the use of silica gel effectively stabilizes air temperature and accelerates moisture reduction compared to drying without silica gel. The developed solar drying system reduced the moisture content of cocoa beans by up to 38% within 4 hours, producing a more hygienic final product than manual drying, which achieved only a 21% reduction. This solar dryer technology offers a promising alternative solution for cocoa farmers to improve productivity and product quality sustainably.
ANALISIS KARAKTERISTIK TERMAL BIO OIL DAN BIO ARANG DENGAN PROSES PIROLISIS MENGGUNAKAN BAHAN BAKU KALIANDRA MERAH Rouli Pasaribu, Viviany; A. Abdullah, Nasruddin; Bahri Widodo, Syamsul
JURUTERA - Jurnal Umum Teknik Terapan Vol 12 No 01 (2025)
Publisher : Fakultas Teknik Universitas Samudra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55377/jurutera.v12i01.11563

Abstract

The global demand for fuel oil continues to rise, while petroleum reserves are steadily declining. As a response to this challenge, new and renewable energy sources (EBT) offer viable alternatives, minimizing environmental impact while ensuring long-term energy sustainability. Among these alternatives, bio-oil and biochar emerge as promising renewable energy sources. This study aims to analyze the thermal characteristics of bio-oil and biochar produced through pyrolysis using red calliandra wood as a feedstock. The pyrolysis process was conducted at varying temperatures of 300 °C, 400 °C, and 500 °C for 60 minutes. Results indicate that the optimal pyrolysis temperature is 500 °C, yielding biochar with the highest calorific value of 7,145 cal/g and bio-oil with a calorific value of 3,276 cal/g. Thermal analysis reveals significant activity at 283 °C, indicating the thermal decomposition of red calliandra biomass. Higher pyrolysis temperatures enhance biochar quality by reducing moisture and ash content while increasing fixed carbon concentration. The findings underscore the potential of red Calliandra wood as a renewable energy feedstock. This research contributes to the advancement of biomass-based energy technologies and presents opportunities for further optimization of the pyrolysis process. Given Indonesia’s abundant biomass resources, biochar offers a promising pathway for sustainable energy development.
PENGARUH PENGGUNAAN KOIL STANDAR DAN KOIL RACING DENGAN PENAMBAHAN KABEL GROUNDING TERHADAP UNJUK KERJA MESIN PADA SCORPIO Z 225 Wiryadinata, Fahry; A. Abdullah, Nasruddin; Bahri Widodo, Syamsul; Yakob, Iskandar
JURUTERA - Jurnal Umum Teknik Terapan Vol 12 No 01 (2025)
Publisher : Fakultas Teknik Universitas Samudra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55377/jurutera.v12i01.11608

Abstract

This study aims to determine the effect of using standard coils, racing coils, and racing coils with the addition of grounding cables on the performance of the Scorpio z 225 engine. Variations in the type of ignition coil with the addition of grounding cables are used to evaluate their impact on engine performance such as torque, power, fuel consumption, AFR, volumetric efficiency, thermal efficiency and ignition mass resistance. The results of the experimental test showed that the use of a racing ignition coil with the addition of a grounding cable obtained the highest torque and power at 8000 rpm, which were 19.21 Nm and 16.05 kW, respectively. Fuel consumption is also more efficient due to the use of a racing ignition coil with the addition of a grounding cable because combustion becomes more perfect. The use of a racing ignition coil and grounding cable can also provide better AFR than a standard ignition coil. The use of a racing ignition with the addition of a grounding cable provides the highest values ​​for volumetric efficiency and thermal efficiency at 8000 rpm of 62.8% and 42.99%. The lowest ignition mass resistance is also obtained from the use of a grounding cable with a value of 7.6 ohms at 8000 rpm.
Preventive and Corrective Maintenance Management of Sheng Jin RTM1300 Double PUR Coating Machine at PT Kayu Lapis Indonesia Yahya Hidaytullah, Muhammad; Safi'i, Muhammad
JURUTERA - Jurnal Umum Teknik Terapan Vol 12 No 01 (2025)
Publisher : Fakultas Teknik Universitas Samudra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55377/jurutera.v12i01.11632

Abstract

Abstrak Berdasarkan hasil analisis dan studi lapangan jadwal Maintaince dibuat dalam kegiatan pengabdian Kerja Praktek Kepada PT. Kayu Lapis Indonesia ini dibuat dengan membandingkan dan mengidentifikasi Maintainance prevective yang sudah ada dan Maintainance Corrective pada saat dilapangan. Ide ini didasari oleh data perwatan berkala terdahulu maupun perawatan setelah mengalami kerusakan, Jadwal Maintainane Berkala ini Dapat Bermanfaat dan dapat meminimalisir Kecelakaan kerja yang disebabkan oleh Mesin, dapat menghasilkan Produksi yang optimal dan mengurangi Maintainance Corrective (MC). Maintainance Preventif Tindakan preventif sangat penting untuk menjaga aset tetap berfungsi dengan baik. Dengan melakukan inspeksi rutin, Perawatan korektif adalah tindakan untuk memperbaiki peralatan setelah rusak. Sudah banyak penelitian tentang perawatan Mesin Coating dengan metoda RCM (Reability Centered Mainteinance), FMA (Failure Method Analisys) baik melalui eksperimen, asalisis, maupun studi numerik namun belum ada analisa perawatan terencana dan tidak tercana pada mesin Coating Merek Sheng jin dan Type RTM1300 Double PUR Perekatan Mesin Perekat di PT.Kayu Lapis Indonesia, Singkatnya penelitian ini akan mengkaji Analisa perawatan Mesin Coating Merek Sheng jin dan Type RTM1300 Double PUR Perekatan Mesin Perekat ditinjau dari Maintanance Preventif dan Maintainance Corrective Di PT. Kayu Lapis Indonesia, Kendal dengan pendekatan Analisa langsung guna untuk mengetahui performa dan umur komponen mesin tersebut, diharapkan hasil penelitian ini dapat di apliksikan dan diterpkan secara langsung di lapangan.
Fenomena aliran melintasi empat buah silinder sirkular yang tersusun in line square Manuels, Arif; Cut, Banta; Arif, Zainal
JURUTERA - Jurnal Umum Teknik Terapan Vol 12 No 01 (2025)
Publisher : Fakultas Teknik Universitas Samudra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55377/jurutera.v12i01.11828

Abstract

The development and application of circular cylinders are extensively used in various fields of engineering. These applications include the construction of offshore support pipelines, subsea pipeline networks, and shell-and-tube heat exchangers. Previous research has consistently shown that drag force, lift force, and vortex shedding occur when fluid flows past these cylinder arrangements. Consequently, further investigations have been conducted through numerical simulations, primarily aiming to mitigate these undesirable phenomena of drag, lift, and vortex shedding within the circular cylinder arrangements. This particular study focuses on four circular cylinders arranged in an in-line square configuration. The main cylinder diameter (D) is 25 mm, while the diameter of the disturbing body (BP) (d) is 4 mm, resulting in a diameter ratio (d/D) of 0.16. This cylinder arrangement was positioned within a narrow square channel with cross-sectional dimensions of H = 300 mm and L = 1500 mm. The setup had a blockage ratio of 25% and was tested at a Reynolds number (Re) of 5.0×104, based on the cylinder diameter. For the study, three variations of Inlet Disturbance Bodies (IDB) were placed at angles of 0o, 90o, and 270o in front of the two upstream cylinders, maintaining a gap ratio (G/D) of 0.16 relative to the circular cylinders. This numerical simulation research was carried out using 2D Unsteady-RANS via Ansys Fluent Student R2021 software. A structured mesh was employed for meshing, and the k-ω-SST model was selected for turbulence modeling. The findings of this research indicate that both the distance (L/D) and the implementation of three IDBs significantly influence the drag coefficient observed on the four circular cylinders arranged in an in-line square formation. Specifically, the addition of three IDBs around the two upstream cylinders at angles of 0o, 90o, and 270o proved to be highly effective in reducing the drag coefficient (CD) on cylinder 3 (downstream top) and cylinder 4 (downstream bottom).
Machinability of Polymer Foam Composites Reinforced with Oil Palm Empty Fruit Bunch (OPEFB) Fibers for Robot Car Body Applications Rosyadan, Dafa Amrina; Arif Adlie, Taufan; Arif, Zainal
JURUTERA - Jurnal Umum Teknik Terapan Vol 12 No 01 (2025)
Publisher : Fakultas Teknik Universitas Samudra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55377/jurutera.v12i01.12083

Abstract

Oil Palm Empty Fruit Bunches (OPEFB) is one of the solid wastes of the palm oil industry that is used as an alternative material to replace composite products. Composite is a material that is formed from a combination of two or more materials so that a composite material is produced that has different mechanical properties and characteristics from the forming material. This research aims to make the body of a food delivery car robot and obtain the characteristics of being able to machine (Drilling and Sawing), The test material used is a foamed polymer composite material reinforced with OPEFB fiber. The composite manufacturing process is carried out by the hand lay-up method. This test was carried out using 3 variations of drill bits with diameters of 4 mm, 6 mm, and 8 mm and by using cutting speeds of 20 m/min, 40 m/min, and 60 m/min. From the results of the comparison, the use of drill bits with a diameter of 8 mm obtained the most optimal results, where a cutting speed of 20 m/min produced a rotation speed of 796.17 rpm, a cutting speed of 40 m/min produced a rotation speed of 1592.3 rpm, and a cutting speed of 60 m/min produced a rotation speed of 2388.5 rpm. The greater the cutting speed, the greater the spindle rotation produced; the low cutting speed followed by the low spindle rotation does not raise the cutting force enough so that the composite plane will break.
PENGARUH RADIASI CAHAYA TERHADAP PANEL SURYA DAN BATERAI LITHIUM-ION PADA ROBOT PENGANTAR MAKANAN (STUDI EKSPERIMEN INDOOR DAN OUTDOOR) Halim Vizar, Mhd. Raqhil; Arif Adlie, Taufan; Amin, Muhammad
JURUTERA - Jurnal Umum Teknik Terapan Vol 12 No 01 (2025)
Publisher : Fakultas Teknik Universitas Samudra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55377/jurutera.v12i02.12099

Abstract

This research utilizes solar energy to generate electricity through solar panels with experimental study methods in outdoor (sunlight) and indoor (lights) conditions. Experiments using two 500-watt (12000 Lux) incandescent lamps produced a maximum power of 5.25 watts at 35°C with an intensity of 94.8 W/m², while sunlight produced up to 13.93 watts of power at 55°C with an intensity of 206.6 W/m² using a 20 Wp polycrystalline panel. The power increases to the optimum temperature, then decreases due to thermal effects. Low temperature improves efficiency; high temperature lowers it. A 21.6 Ah (12 V) lithium-ion battery stores 259.2 Wh of energy, and with the slow charging method, it takes about 2 hours to reach the 20% discharge limit. Indoor testing with light lamps provides a more stable alternative. The increase in light intensity increases power to a certain point before decreasing due to temperature.

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