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INDONESIA
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 161 Documents
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Impact Characterization of Safety Helmets Made From Areca Fiber-Reinforced Polyester Composites Ahmad, Nazli; Arif, Zainal; Arif Adlie, Taufan; Iskandar
JURUTERA - Jurnal Umum Teknik Terapan Vol 11 No 02 (2024)
Publisher : Fakultas Teknik Universitas Samudra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55377/jurutera.v11i02.10819

Abstract

Composite materials are a combination of two or more materials with different properties. Areca fiber, a natural fiber abundant in Indonesia, has the potential to be used as reinforcement in composites with Polyester BTQN 157 resin as the matrix. This study aims to analyze the effect of varying fiber-resin weight fractions (10%, 15%, 20%, 25%, and 30%) on impact strength. Specimens were fabricated using the hand lay-up method and tested using the Charpy impact method according to ASTM standards. The results show that the composite with 20% fiber content achieved the highest impact strength, at 3.193 kJ/m². However, this value remains below the Indonesian National Standard (SNI) requirement for safety helmets, which is 0.00972 J/mm². The produced helmet weighs 470 grams, exceeding the SNI standard (337 ± 5 grams). Although the helmet demonstrated resistance to impact, further research is required to optimize the material composition to fully meet SNI standards.
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.
Innovative Jominy Test Equipment for Evaluating The Hardening Of AISI 1045 Steel Rahman; Arif, Zainal; Suheri; Bahri Widodo, Syamsul
JURUTERA - Jurnal Umum Teknik Terapan Vol 11 No 02 (2024)
Publisher : Fakultas Teknik Universitas Samudra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55377/jurutera.v11i02.10937

Abstract

The development of heat treatment testing equipment is essential in metallurgical applications, especially for determining the hardenability of steel. This study focuses on designing a portable Jominy test apparatus to evaluate the hardenability of AISI 1045 medium carbon steel, offering a more practical and cost-effective solution. The apparatus was built with an angle iron frame (64 x 82 x 64 cm) and equipped with a 200-liter water drum and a Shimizu water pump (18 L/min flow rate). Hardness testing was performed using the Rockwell B method (150 kgf load, 15-second dwell) on specimens subjected to three conditions: raw, water-quenched, and oil-quenched, after heating at 900 °C for 30 minutes. The results showed hardness increases from 91.00 HRB (raw) to 101.33 HRB (water-quenched) and 100.33 HRB (oil-quenched), with water quenching producing slightly higher values due to its faster cooling rate. The study demonstrates the effectiveness of the portable apparatus for evaluating AISI 1045 steel hardenability with advantages in portability, cost, and reliability.
Enhancing Thermal Efficiency of a Solar Water Heating System with a Parabolic Trough Collector Sukuria Mungkur, Rahmat; Umar, Hamdani; Abdullah, Nazaruddin; Amir, Fazri
JURUTERA - Jurnal Umum Teknik Terapan Vol 11 No 02 (2024)
Publisher : Fakultas Teknik Universitas Samudra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55377/jurutera.v11i02.11033

Abstract

The growing population drives the construction of high-rise buildings as residential areas, leading to an increased demand for hot water for bathing, consumption, and other purposes. Conventional water heating using fossil energy negatively impacts the environment, making solar water heater (SWH) technology an eco-friendly alternative. However, the efficiency of conventional SWHs with evacuated tube collectors remains limited due to suboptimal solar energy capture. This study aims to enhance water heater efficiency by utilizing concentrated solar power (CSP) technology with a parabolic trough collector (PTC). The PTC focuses solar energy on a square-shaped receiver containing a sensible heat storage medium and a main pipe for heating water. The research was conducted experimentally by measuring water temperature with thermocouples and solar radiation using a pyranometer. The results show that the maximum water temperature achieved was 84°C at a solar radiation intensity of 1.112 W/m², with a maximum system efficiency of 35%. This technology demonstrates potential for improving the efficiency of renewable energy-based water heating systems.
Studi Numerik Aliran Melintasi Empat Buah Silinder Sirkular Yang Tersusun In- Line Square Dengan Bodi Pengganggu Yusup, Intan; Cut, Banta; Bahri Widodo, Syamsul
JURUTERA - Jurnal Umum Teknik Terapan Vol 11 No 02 (2024)
Publisher : Fakultas Teknik Universitas Samudra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55377/jurutera.v11i02.11144

Abstract

The development of circular cylinders in engineering has been widely utilized, including in pipeline construction, underwater networks, and tube heat exchangers. Previous studies have indicated the presence of drag forces, lift forces, vortex shedding, and vortex-induced vibrations (VIV) that occur when fluid flows past these cylindrical arrangements. Consequently, further research was conducted using numerical simulations aimed at reducing drag forces, lift forces, vortex shedding, and VIV in these circular cylinder configurations. In this study, four in-line square circular cylinders were arranged with a main cylinder diameter (D = 25 mm) and a disturbance body diameter (d = 4 mm), yielding a diameter ratio (d/D) of 0.16. The cylinder arrangement was placed in a narrow channel with a square cross-section measuring (H = 300 mm and L = 1500 mm), resulting in a blockage ratio of 25%, tested at a Reynolds number (Re) of 5.0 × 104 based on the cylinder diameter. Three disturbance bodies (DB) were positioned at angles θ = 0°, 120°, and 240° in front of two upstream cylinders with a gap distance (G/D) of 0.16 relative to the circular cylinder. This numerical simulation research was conducted using 2D UnsteadyRANS with Ansys Fluent 19.1 software, employing structured mesh and turbulence models k-ω-SST and K-Epsilon Standard. The results indicated that the distance between cylinders and the use of disturbance bodies significantly affect the drag coefficient experienced by the four in-line square circular cylinders. The addition of disturbance bodies surrounding the two upstream cylinders at angles of 0º, 120º, and 240º was highly effective in reducing the drag coefficient (CD) on the third cylinder (upper downstream) and the fourth cylinder (lower downstream).
A Study on the Design and Construction of a Stove Utilizing Waste Oil as Fuel Urhamdi, Nila; Bahri Widodo, Syamsul; Cut, Banta
JURUTERA - Jurnal Umum Teknik Terapan Vol 11 No 02 (2024)
Publisher : Fakultas Teknik Universitas Samudra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55377/jurutera.v11i02.11145

Abstract

The history of stoves reflects significant development, starting from the use of simple hearths to the emergence of kerosene stoves, electric stoves, and gas stoves. In Indonesia, the use of gas stoves continues to rise, especially with the ongoing energy conversion initiatives by the government. However, limited access to gas fuel in remote areas remains a challenge, necessitating efforts to explore alternative fuels. Used cooking oil is a waste product that has the potential to pollute the environment and adversely affect human health; however, it can be utilized as a stove fuel. This study aims to design and test a burner stove that utilizes used cooking oil as fuel. The research method involves quantitative data obtained from burner stove testing. The results indicate that the efficiency of the stove achieved is between 10,03% - 10,41%.
Optimization of Tubular Solar Distillation Performance With Nano-PCM and Parabolic Trough Collector Seftian Amanda, Muhammad; Amin, Muhammad; Azuar Rizal, Teuku
JURUTERA - Jurnal Umum Teknik Terapan Vol 11 No 02 (2024)
Publisher : Fakultas Teknik Universitas Samudra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55377/jurutera.v11i02.11148

Abstract

Solar distillation is a desalination method that utilizes solar energy to convert saline water into freshwater. However, the efficiency of this process is often limited by temperature fluctuations and low heat storage capacity. Phase Change Material (PCM) has been used as a thermal storage medium in solar distillation systems, but the low thermal conductivity of pure PCM remains a major challenge. To address this limitation, this study incorporates graphene carbon nanoparticles into beeswax-based PCM to enhance its thermal properties. This research examines the effect of adding 0.3% graphene to beeswax PCM on the performance of a tubular solar distillation system equipped with a Parabolic Trough Collector (PTC). The experiment compares the performance of pure PCM and nano-PCM, each weighing 90 grams and enclosed in an aluminum foil bag. The experimental results indicate that the addition of graphene to beeswax PCM improves solar distillation performance based on three key parameters, namely temperature, productivity, and efficiency. Nano-PCM achieved a maximum temperature of 76 °C, representing a 2.7% increase compared to pure PCM. In terms of productivity, the distilled water yield of nano-PCM was recorded at 0.834 L/m² on October 15, 2024, and 0.819 L/m² on October 17, 2024, marking an increase of 3.22% and 6.64%, respectively, compared to pure PCM. Furthermore, the system’s efficiency also improved with an increase of 3.03% on October 15, 2024, and 6.7% on October 17, 2024. Overall, this study demonstrates that the use of nano-PCM enhances the performance of solar distillation, particularly in terms of operating temperature, water productivity, and system efficiency. These findings highlight the significant potential of nano-PCM applications in large-scale solar distillation systems to improve freshwater production efficiency.
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.

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