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SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin
Published by Universitas Muhammadiyah Jakarta
ISSN : 20889038     EISSN : 25499645     DOI : -
Core Subject : Science, Engineering,
Automotive Engineering Control & Systems Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering
SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin is an open access, peer-review journal which publishes original and review articles that advance the understanding of both the fundamentals of engineering science and its application to the solution of challenges and problems in mechanical engineering systems, machines and components. The editorial team aims to publish high quality and highly applied research and innovation that has the potential to be widely disseminated, taking into consideration the potential mechanical engineering that it could generate.
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 269 Documents
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Comparative Analysis of Waterwheel Efficiency Using Nozzle and Open Canal on Waterway Soleh Pohan, Abdul Rahman; Mugisidi, Dan; Nurfadillah, Zaka; Heriyani, Oktarina
SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin Vol 17, No 2 (2023): SINTEK JURNAL
Publisher : Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/sintek.17.2.143-150

Abstract

Water flow in irrigation is a means of obtaining electric power, which is commonly called microhydro. The waterwheel is the main component of the microhydro energy conversion process. The amount of energy converted by a waterwheel depends on the shape of its model, blade shape and the location of the installer. This study aimed to identify the characteristics of optimally efficient waterwheels. In addition to the energy of the place (i.e., the head), the influence of the weight of the water flowing into the blades of the waterwheel must be considered. This study also aimed to determine the effectiveness of mill performance by comparing waterways that use nozzles with those that use open canals. An experimental method was used to design a waterwheel system by testing the efficiency ratio between the nozzle line and the open canal. This test used the following variable water discharge rates: 12 m3/hr, 14 m3/hr, 16 m3/hr, 18 m3/hour and 20 m3/hr. Using the nozzle line with the largest discharge rate of 20 m3/hr, an rpm of 192.7 is produced with a torque of 0.7 Nm. The waterwheel produced 14.13 watts, with an efficiency of 64.75%. A line that used an open channel at the highest discharge rate of 20 m3/hr produced 61.7 rpm with 0.7 Nm of torque and 4.52 watts with an efficiency of 20.71%. The speed of water flow in the nozzle line was faster than in the open canal path, causing the tangential force on the waterwheel to be greater than on the open canal path. Based on these results, it was concluded that the path was the most efficient when using a nozzle.
Analysis of The Vertical and Horizontal Type Cultivator Claw On The Performance Test of The Power Weeder Machine Prasetiyo, Angger Bagus; Sekarjati, Kartinasari Ayuhikmatin
SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin Vol. 18 No. 1 (2024): SINTEK JURNAL
Publisher : Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/sintek.18.1.13-18

Abstract

Weeds account for approximately 40–65% of rice production losses and affect 15–42% of arable land. If not managed promptly, crop yields could be drastically reduced. Traditional weed control methods, including manual weeding, chemical, semi-mechanical, and mechanical techniques, vary in effectiveness and efficiency. Conventional chemical and semi-mechanical methods are often less effective, costly, time-consuming, and environmentally detrimental. Thus, mechanical weed control presents a superior alternative. This study aims to compare the performance of power weeder machines equipped with vertical and horizontal cultivator claws in terms of weeding time, tool efficiency, and plant damage. The experiment was conducted on 30-day-old rice plants, with each test performed four times over a 1 x 6-meter area, maintaining a muck depth of 20 cm between rice plants. The power weeder machines were equipped with eight claws per unit, a 1.5 HP drive motor, and operated on a mix of oil and petrol fuel. Results indicate that the vertical-type cultivator claw achieved a work efficiency of 72.42%, while the horizontal-type cultivator claw achieved 86.04%. Weeding effectiveness was 93.10% for horizontal claws and 94.77% for vertical claws. Post-weeding, the horizontal cultivator claws caused 14.13% damage to rice plants, compared to 5.73% for vertical claws. Given its high weeding efficiency and minimal plant damage, the vertical type claw cultivator is highly recommended.
Performance Analysis of Dual Fuel Diesel Generator with Variations in LPG Flow Rate and Air Hole Diameter Witanto, Y; Amsah, I; Zukri, D; Nuramal, A; Rosa, M.K.A.
SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin Vol 17, No 2 (2023): SINTEK JURNAL
Publisher : Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/sintek.17.2.102-112

Abstract

Research on dual fuel diesel engines has been the main focus, but research on the composition of LPG and air in the intake manifold is still limited. This study aims to analyze the performance of a dual fuel diesel generator set by varying the LPG flow rate and air hole diameter in the intake manifold. The research method applied is experimental with test variables in the form of gas flow rate (1 LPM, 2 LPM, and 3 LPM) and air hole diameter (19 mm, 21 mm, 23 mm, 25 mm, and 27 mm). These test variables significantly affect electrical power and SFC (Specific Fuel Consumption). Analysis was conducted using single factor Anova. The results showed that the addition of LPG gas with variations in flow rate resulted in an increase in power compared to the use of pure diesel, especially at high loads. A significant increase in power occurred at an orifice diameter of 27 mm at an LPG flow rate of 3 LPM, reaching 1548 Watts. The SFC shows that the addition of LPG substituted with diesel is more efficient and effective than using only diesel. The lowest SFC occurred in the variation with an LPG gas flow rate of 1 LPM, at an air hole diameter of 25 mm, which amounted to 0.002721 kg/kWh. In conclusion, this study illustrates the impact of variations in LPG flow rate and air outlet diameter on the performance of dual fuel diesel gensets. The implications of these findings can support the development of more efficient and environmentally friendly engine technology.
Enhanced Performance of the Gorlov Hydrokinetic Turbine through Blade Profile Modification Rendi, Rendi; Arifin, Jainal; Pauzan, Muhammad
SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin Vol. 18 No. 1 (2024): SINTEK JURNAL
Publisher : Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/sintek.18.1.19-25

Abstract

The Gorlov turbine is a widely used hydrokinetic turbine for household-scale hydroelectric power generation, known for its superior performance compared to other turbine types. Despite its high efficiency, the Gorlov turbine has a significant drawback: it cannot operate effectively at low water speeds due to its blade design, which relies solely on lift force. This study aims to address this limitation by modifying the blade profile to harness drag force in addition to lift force. The modified blade profile retains the original crescent shape while enhancing its design. For data validation, two models were created: the conventional Gorlov turbine and a modified version. Laboratory-scale tests were conducted using a water pump to simulate flow in an artificial channel, with water speeds ranging from 0.185 m/s to 0.225 m/s. Correlation regression analysis was employed to evaluate the experimental results and strengthen the reliability of the findings. The results indicate a correlation between changes in water flow speed and increases in turbine rotation, turbine torque, torque coefficient, and power coefficient. Specifically, the conventional Gorlov turbine exhibited an average torque of 0.014 Nm, a torque coefficient of 0.0209, and a power coefficient of 0.32. In contrast, the modified Gorlov turbine demonstrated an average torque of 0.016 Nm, a torque coefficient of 0.239, and a power coefficient of 0.308.
Effect of Preheat Temperature Variation with Cooling Media on Mechanical Properties in Welding SS400 Steel Oktaviandy, Nadya Rachma; Kardiman, Kardiman; Hanifi, Rizal
SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin Vol 17, No 2 (2023): SINTEK JURNAL
Publisher : Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/sintek.17.2.130-142

Abstract

SS400 material is a type of low-carbon steel with a carbon content of 0.17%. It is recognized as low-carbon steel. SS400 steel is commonly employed in shipbuilding and general construction projects. This study recommends the utilization of SS400 steel in tank manufacturing through the Shielded Metal Arc Welding (SMAW) process. Before the SMAW welding process, specimens undergo a specific treatment involving preheating at temperatures of 100°C, 150°C, and 200°C. Subsequently, after preheating, specimens are welded, followed by immersion in a cooling medium, either well water or SAE 15W-40 oil. The preheating and cooling processes aim to enhance the mechanical properties of the material. Impact testing, tensile testing, and microstructure analysis were conducted to evaluate the effects of these treatments. The research results demonstrate a significant improvement in Impact energy, tensile strength, yield strength, modulus of elasticity, and strain in specimens subjected to preheating and cooling treatment. These findings indicate that the use of preheating and cooling can enhance the mechanical performance of SS400 material, providing positive benefits in construction applications that require increased strength and resilience
Material Optimization in the Design of Chuck Hard Jaw Type Zs Size 160 for Cost Savings in Purchasing Parts for Industrial Turning Machines Nugroho, Oktavianus Ardhian; Ritanto, Robertus Didit
SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin Vol 17, No 2 (2023): SINTEK JURNAL
Publisher : Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/sintek.17.2.71-81

Abstract

In the realm of turning machines, a critical component known as the jaw chuck or hard jaw serves as the clamping mechanism for workpieces during machining processes. PT. Atmi Mikael Fortuna (PT.AMF) frequently encounters challenges in replacing these hard jaws, as they rely on importing ZS-160 type hard jaws manufactured by RÖHM, an American product. This replacement process is time-consuming and incurs high costs. The objective of this study is to independently design and manufacture ZS-type hard jaws, with a specific emphasis on reducing costs and replacement time. The collaboration between Politeknik Industri ATMI and PT.AMF involves the design, fabrication, and modification of hard jaws. The modeling process utilizes 3D scanning and Coordinate Measuring Machine (CMM), generating a point cloud that is subsequently cleaned of noise and verified using 3D Solid Work Software. The ARL 3460 machine is employed to identify the most suitable material, resulting in material Nr. 1.6582 (AISI 4340). Trial experiments demonstrate the optimal performance of the manufactured hard jaws, and the independent production yields a significant 28% reduction in time and costs for PT.AMF.
Repair of Wire Feeder Gears in a 1300-Watt MIG Welding Machine Using Reverse Engineering Technology Rabbika, Anes Inda; Nugraha, Muhamad Hanhan; Rusdja, Andy Permana; Malik, Mochamad Irlan
SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin Vol. 18 No. 1 (2024): SINTEK JURNAL
Publisher : Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/sintek.18.1.26-30

Abstract

Material failure is a common occurrence in components subjected to continuous loads, often due to fatigue. In the MIG 1300-watt welding machine, the wire feeder gear transmission process continuously distributes energy, leading to eventual material failure. This failure disrupts the transmission of rotation to the feeder shaft, causing the wire exiting the torch to slip. To address this issue, reverse engineering technology is applied using computer-aided design (CAD), finite element analysis (FEA) assisted by computer-aided engineering (CAE), and computer-aided manufacturing (CAM), culminating in the production of prototypes with 3D printing technology. This research aims to repair the wire feeder gears by leveraging reverse engineering technology, which includes redrawing the gears and implementing developmental modifications using CAD/CAM tools. These modifications are then analyzed through FEA with CAE assistance, and the final prototype is produced using an Anet A8 V2 3D printer with Poly Lactic Acid (PLA) material.
The Influence of Water Temperature on Seawater Evaporation in the Desalination Process Sayuti, Adi Tegar; Mugisidi, Dan; Wirangga, Ristanto; Heriyani, Oktarina
SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin Vol 17, No 2 (2023): SINTEK JURNAL
Publisher : Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/sintek.17.2.113-119

Abstract

Population An increase in population in an area results in an increased demand for clean water. Although water is abundant, about 97% of the water on Earth is seawater, which cannot be consumed directly because it contains harmful substances. Desalination process is used to convert seawater into drinking water by utilizing heat and wind speed. This research explores temperatures of 30℃, 45℃, 60℃, and 70℃ with a wind speed of 2.6 m/s. Data was collected for each temperature variation for 2 hours with records every 15 minutes, aiming to evaluate the effectiveness of evaporation and condensation in the desalination process. The results showed that 70℃ resulted in the highest evaporation (800 grams), although with a condensation rate of 26.25%. Condensate measurements showed a pH of 7.2 and TDS meter readings ranged from 125 to 138 ppm.
Characterization of Catalytic Converter Made from Chrome-Plated Copper Plate Catalyst for Gasoline Motors Irawan, RM Bagus; Sholecan, Achmad; Subri, M; Pantomy, Antonius
SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin Vol. 18 No. 1 (2024): SINTEK JURNAL
Publisher : Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/sintek.18.1.31-37

Abstract

This study characterizes copper (Cu) and chrome-plated copper (Cu-Cr) catalyst materials used in catalytic converters for gasoline engines. The objective is to investigate morphological and compositional changes resulting from exhaust gas emission testing. Scanning Electron Microscopy (SEM) coupled with Energy Dispersive X-ray Spectroscopy (EDX) was employed for microstructural analysis of the catalyst materials. The research examines morphological changes in Cu and Cu-Cr catalysts before and after exhaust gas emission testing, along with elemental composition alterations. Results indicate that exhaust gas exposure significantly alters the morphology and composition of both catalyst types. Morphologically, Cu catalyst particles originally flat with fine grains exhibited rougher, uneven surfaces with random grain formations and porosity post-testing. Similarly, Cu-Cr catalyst surfaces transformed from smooth to uneven, marked by darkened spots. Compositionally, Cu catalysts initially consisting of five elements (Cu 82.92%, O 5.96%, C 10.22%, Cl 0.60%, Si 0.29%) changed to include eight elements (Cu 70.65%, O 12.89%, C 12.85%, Cl 0.66%, Si 0.27%, N 1.74%, Al 0.27%, S 0.67%). Cu-Cr catalysts initially composed of three elements (Ni 87.65%, Cr 10.50%, C 1.85%) evolved to five elements (Ni 86.01%, Cr 6.56%, O 5.70%, O 1.42%, S 0.71%). These findings underscore the transformative effects of exhaust gas exposure on catalyst materials, influencing both their morphology and elemental composition, crucial for enhancing catalytic converter performance and durability in automotive applications.
The Influence of Nozzle Injection Pressure on Seawater Evaporation Inside an Evaporator Tube Aji, Ikbal Prasetiyo; Mugisidi, Dan; Yusuf, Ahmad Maulana; Heriyani, Oktarina
SINTEK JURNAL: Jurnal Ilmiah Teknik Mesin Vol. 18 No. 1 (2024): SINTEK JURNAL
Publisher : Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24853/sintek.18.1.1-5

Abstract

Indonesia, the largest archipelagic country in the world, possesses a vast marine area. Despite being surrounded by the sea, many coastal communities in Indonesia lack access to clean water. Seawater distillation presents a viable solution to this scarcity. This process involves separating salt from seawater to produce fresh water. This study aims to analyze the effect of nozzle spray pressure on the evaporation process of seawater to optimize fresh water production. Experiments were conducted using a fogging nozzle with a diameter of 0.3 mm, varying the nozzle pressure at 40 psi, 70 psi, and 100 psi. The data were statistically analyzed to determine the impact of nozzle pressure on seawater evaporation. The results indicate that the highest evaporation occurred at a nozzle pressure of 40 psi, yielding 10 g of condensed seawater, whereas the lowest evaporation was observed at 100 psi, producing 4 g.

Page 25 of 27 | Total Record : 269

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