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Artikel Jurnal
OIL FROM THE PYROLYSIS OF RICE HUSK BIOMASS AND COFFEE GROUNDS MIXTURE WITH POLYPROPYLENE PLASTIC
This study aims to determine the effect of the ratio of the composition of the mixture of rice husk and coffee grounds with PP plastic on quantity (volume of pyrolysis oil and distillation results) and quality (yield, density, viscosity, visual and color), as well as to determine the ratio of…
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Artikel Jurnal
ARDUINO-BASED AUTOMATIC CONTROL SYSTEM APPLICATION FOR DROPLET COMBUSTION HEATER DRIVE
The droplet test in combustion is a widely used method for evaluating the physical properties of fuels, such as biodiesel. This examination entails depositing liquid droplets onto a surface and monitoring their properties. This study employs a semi-automatic control system in droplet testing to…
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Artikel Jurnal
AIR CONDITIONING LOAD AND ANALYSIS CALCULATION OF AIR DISTRIBUTION IN VEHICLE CABINS BRIDGE MAINTENANCE INSPECTION
Cabin comfort is essential for an inspector to work focusly and produce valid data in a bridge maintenance vehicle. The use of an air conditioner (AC) in the cabin of this vehicle is a concern for the inspector's comfort while supervising the bridge. Choosing an inappropriate AC can result in…
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Artikel Jurnal
CHARACTERIZATION OF REFUSE DERIVED FUEL (RDF) PELLETS IN THE MUNICIPAL SOLID WASTE PROCESSING PROCESS
Municipal Solid Waste (MSW) can be processed to be Refuse Derived Fuel (RDF) pellets. Generally, RDF is combustible waste that processed by crushing and filtering through converting it to solid fuel. RDF pellets can be made by pressing using a pellet machine names pelletizer. The research goal was…
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Artikel Jurnal
FOURIER TRANSFORM INFRARED SPECTROSCOPY INTERPRETATION DAN THERMOGRAVIMETRY/DIFFERENTIAL SCANNING CALORIMETRY ANALYSIS ON THERMOSETTING RESIN PRODUCTS WITH QUENCHING TREATMENT
The quenching phenomenon observed in thermosetting epoxy resins necessitates a comprehensive investigation to mitigate its potential adverse effects on material performance. This study presents a novel approach to analyzing epoxy resins by employing Fourier Transform Infrared (FTIR) spectroscopy…
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Artikel Jurnal
LOAD ANALYSIS ON VERTICAL LIFTING OVERHEAD CONVEYOR STRUCTURES
Overhead conveyors are designed to facilitate the transfer of material from one location to another. One aspect that needs to be planned is the vertical lifting structure, which is the initial loading process the material is attached to the trolley at a higher level of overhead conveyor. By design…
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Artikel Jurnal
ANALYSIS OF THE THRUST ON PROPELLER SHAFT ANGLE ON FISHING VESSEL USING CFD
Indonesian fishing vessels need a prime mover capable of propelling the vessel forward and backward. According to data from the Ministry of Maritime Affairs and Fisheries, many vessels in Indonesia are spread across various State Fisheries Management Areas of the Republic of Indonesia waters. Most…
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Artikel Jurnal
SIMULATION-BASED ANALYSIS FOR OPTIMIZING MOLD DESIGN OF PLASTIC HARDNESS TEST SPECIMENS USING KEY PARAMETERS
This study aims to compare the performance of two injection molding designs—Design A and Design B—for producing plastic hardness test specimens. Design A showed a fill time of 1.03 s and cooling quality covering 84.2% of the part, compared to 1.06 s and 72.4% for Design B. Design B, however…
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Artikel Jurnal
NUMERICAL STUDY OF THE BUBBLE FORMATION MECHANISM IN HORIZONTAL LIQUID-GAS FLOW IN A T-JUNCTION MINICHANNEL
The purpose of this research was to study the mechanism of air bubble formation at the T-Junction Minichannel. Numerical simulations were carried out using the Volume of Fluid (VOF) method on OpenFOAM v2112 with the Pressure Implicit with Splitting of Operators (PISO). Working fluids of water and…
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Artikel Jurnal
STUDI COMPUTATIONAL FLUID DYNAMICS (CFD) UNTUK MENDIAGNOSA KEGAGALAN POMPA INJEKSI AIR
Multistage centrifugal pumps are the critical equipment in the water injection system in oil and gas processing facilities but often fail due to abrasive and corrosive fluids. This research utilized the Computational Fluid Dynamics (CFD) approach to analyze the effect of sand particle size…
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Artikel Jurnal
PERAN KOMPOSISI MINERAL PADA AIR GAMBUT DALAM MEMPERCEPAT REAKSI PEMBENTUKAN GAS HIDROGEN PADA PROSES ELEKTROLISIS
The existence of peatlands in Indonesia is quite extensive, but many peatlands in Indonesia are not utilized properly. So, peatlands are left as is. The low pH value of peatlands makes it very difficult to use peatlands as agricultural land and can only be planted with grass and other wild plants…
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Artikel Jurnal
RISK ASSESSMENT OF GAS PIPELINE CROSSING UNDER RAILWAY TRACKS AND DENSE RESIDENTIAL AREAS
The crossing of Gas pipelines with railways is part of the energy transportation infrastructure that requires special attention, both to the operational safety of the pipeline and the railway line itself. Therefore, stakeholders need to conduct a risk assessment of each pipeline and railroad…
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Artikel Jurnal
EFFECT OF FLASK VIBRATION ON GRAY CAST IRON CHARACTERISTICS PREPARED BY LOST FOAM CASTING
Parameter selection in lost foam casting can reduce the casting defect. Flask vibration is a critical parameter that significantly influences the casting quality in the lost foam casting. This research aims to investigate the effect of the flask vibration duration on fluidity, porosity, and surface…
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Artikel Jurnal
INNOVATIVE DESIGN AND FABRICATION OF FIXTURES FOR ENHANCED ULTRASONIC TESTING
Ultrasonic Non-Destructive Testing (UT) is essential in manufacturing to ensure measurement accuracy by calibrating tools against specified standards. However, UT calibration often faces challenges such as oil spills, usability issues, and lengthy processes. This study addresses these challenges by…
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Artikel Jurnal
KARAKTERISTIK MEKANIK ALUMINIUM PADUAN HASIL KOMPARASI PROSES EQUAL CHANNEL ANGULAR PRESSING VS ROLLING
Aluminum alloys are vital in industries such as automotive, aerospace, and manufacturing due to their strength, lightweight, and corrosion resistance. To enhance their mechanical performance and energy efficiency, advanced methods like severe plastic deformation (SPD) have been explored, with equal…
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Artikel Jurnal
DESIGN AND ANALYSIS OF AN AXIAL FLUX PERMANENT MAGNET GENERATORS WIND TURBINE FOR AUTOMATIC STACKING CRANES
Automatic Stacking Cranes are indispensable tools in modern ports that can transfer containers between the landside and the waterside. These cranes are powered by electricity and consume significant amounts of energy to meet annual production demands. This substantial electricity consumption often…
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Artikel Jurnal
RANCANG BANGUN BUCKET PADA MINI EXCAVATOR LISTRIK
The prime mover for the majority of heavy equipment units is still dominated by fossil fuel engines. Before starting innovation on expensive large excavator machines, innovation can be started with electric mini excavators which have almost the same working system but have affordable development…
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Artikel Jurnal
MINIMALISASI MINIMUM ZONE CIRCLE MENGGUNAKAN METODE STATIONARY POINT
The success of the manufacturing world in improving production processes is greatly influenced by the machine equipment used. SKD-11 steel has high wear resistance and good ductility, so it is suitable for components that require high precision and durability. Surface Response Method (RSM)…
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Artikel Jurnal
PERANCANGAN SISTEM MONITORING EVACUATED TUBE SOLAR DRYER STUDI KASUS PROSES PENGERINGAN RUMPUT LAUT
This research applies the simples moving average (SMA) method with period of 5 and 10 to filter monitoring data from solar drying system using an evacuated tube collector. Data filtering was used to eliminate measurement noise. Data was collected at five-minutes intervals. These SMA periods were…
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Artikel Jurnal
ANALISIS EKSERGI KIMIA SISTEM KONVERSI LIMBAH PADAT CANGKANG SAWIT DENGAN TEKNIK PIROLISIS PLASMA
Chemical exergy analysis was commonly used to evaluate the effectiveness of some energy conversions derived from biomass. In this study, this analysis was conducted to evaluate oil palm kernel shell conversion via high-temperature plasma treatment. The plasma treatment was conducted with a DC power…