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Artikel Jurnal
CHARACTERISTICS OF COMBUSTION AND PHYSICAL PROPERTIES OF COFFEE GROUNDS AND SAGO PULP BRICKS WITH SAGO FLOUR BINDER
This study examines the production of briquettes based on agricultural waste from sago pulp and coffee grounds using natural sago flour as a binder, through a laboratory experimental approach. The analysis covers the physical and chemical characteristics, as well as the thermal performance of 3 cm…
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Artikel Jurnal
OPTIMIZATION OF LIGHTWEIGHT ELECTRIC BUS FRAME DESIGN THROUGH VALUE ENGINEERING APPROACH: A SYSTEMATIC REVIEW AND PARAMETRIC FEASIBILITY ANALYSIS
Lightweight frame design plays a critical role in improving the efficiency and sustainability of electric buses. This study aims to explore the optimization of electric bus frame design through the application of Value Engineering (VE), using a systematic literature review (SLR) supported by…
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Artikel Jurnal
THE EFFECT OF AIR FLOW RATE ON THE CHARACTERISTICS OF PULVERIZED CATALYTIC COMBUSTION OF RICE HUSK WASTE BIOMASS
The purpose of this study was to determine the effect of airflow rate on the characteristics of catalytic combustion of pulverized rice husk biomass. Natural zeolite was used as the catalyst in this study. The combustion characteristics included the value of Initiation Temperature of Volatile…
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Artikel Jurnal
CHARACTERISTICS OF SUGARCANE FIBER COMPOSITE REINFORCED WITH MALAPOGA WOOD COATING
Rapid technological developments have led to an increased demand for composite materials. However, composite materials utilizing natural fibers, such as sugarcane bagasse fiber, have not been fully optimized. This study aimed to analyze the characteristics of sugarcane bagasse fiber-reinforced…
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Artikel Jurnal
OPTIMIZATION PITCH AND CLEARANCE FOR DOUBLE HELICAL RIBBON AGITATOR IN BRIQUETTE DOUGH MIXING MACHINE: ANALYSIS OF TORQUE AND POWER IMPACT
Briquette dough kneading machines have become an integral part of the briquette production process in industry. This study aims to analyze the effect of pitch (distance between two windings) and clearance (distance between stirrer and machine wall) on the performance of double helical ribbon…
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Artikel Jurnal
TECHNOLOGY FOR PLANNING THE MANUFACTURING PROCESS OF GUIDE VANES IN FRANCIS TURBINE HYDROELECTRIC POWER PLANTS
PT XYZ is a company engaged in manufacturing, one of the products made is a Guide Vane for Hydroelectric Power Plants. The production process is carried out based on the terms of reference that has been made. The terms of reference do not have detailed information about the work steps, so that…
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Artikel Jurnal
THE EFFECT OF HOLDING TIME VARIATIONS IN THE AUSTENITIZATION AND SPHEROIDIZING ANNEALING PROCESSES ON THE MECHANICAL PROPERTIES AND MICROSTRUCTURE OF 304 STAINLESS STEEL THIN FOIL
This study discusses the effect of holding time variations in the austenitization and spheroidizing annealing processes on the mechanical properties (hardness and tensile strength) and microstructure of 304 thin foil stainless steel materials. The austenitization process was carried out at a…
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Artikel Jurnal
ANALYSIS OF THE CUTTING BLADE FOR HDPE AND PET PLASTIC BOTTLE SHREDDERS FOR 3D PRINTING FILAMENT EXTRUSION
The increasing use of filaments for 3D printing encourages the use of suitable plastic waste as a raw material for filaments. In Indonesia, plastic waste will reach 26.2 million tons in 2023, with 18.47% of it being plastic. To process plastic waste such as PET (Polyethylene Terephthalate) and HDPE…
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Artikel Jurnal
THE EFFECT OF ADDING BIOETHANOL TO RON 92 GASOLINE ON PERFORMANCE AND EXHAUST EMISSIONS
Processing bioethanol from plants rich in carbohydrates into alternative energy sources is a challenging problem related to providing renewable energy. This paper discusses an experimental study of a spark ignition (SI) engine using a mixture of conventional RON 92 fuel mixed with bioethanol. The…
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Artikel Jurnal
CHARACTERIZATION OF FESE SUPERCONDUCTOR MATERIAL WITH MAGNESIUM DOPING VIA POWDER METALLURGY AND QUENCHING METHOD
The effect of magnesium (Mg) content on the resistivity, microstructure, and phase characteristics of iron selenide (FeSe) was investigated. The investigation employed the Powder in Sealed Tube (PIST) method to fabricate components with intricate geometries and high dimensional precision…
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Artikel Jurnal
ANALYSIS OF THE EFFECT OF WATER SALINITY ON THE IMPRESSED CURRENT CATHODIC PROTECTION PHOTOVOLTAIC (ICCP PV) SYSTEM
Cathodic protection is one of the methods used to protect metals from corrosion. This corrosion can occur due to the influence of the surrounding environment, such as salinity levels. ICCP PV is a cathodic protection method by flows direct electric current from the conversion of solar radiation…
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Artikel Jurnal
OPTIMIZATION OF FDM 3D PRINTING PARAMETERS ON THE TENSILE STRENGTH OF FOOD-GRADE PLA FILAMENT USING THE TAGUCHI METHOD
Additive manufacturing, particularly 3D printing, has emerged as a transformative technology in digital fabrication, enabling the rapid, accurate, and cost-effective production of complex components. Among the various 3D printing methods, Fused Deposition Modeling (FDM) is one of the most prevalent…
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Artikel Jurnal
WHY NOTCH GEOMETRY MATTERS FOR STRUCTURAL AND AUTOMOTIVE APPLICATIONS: A NUMERICAL SIMULATION
In structural and automotive systems, notches—whether from manufacturing defects or in-service damage—often act as critical stress concentrators that compromise component integrity. This study provides a comprehensive simulation-based assessment of how different notch geometries affect the…
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Artikel Jurnal
VEHICLE STEERING CONTROL DESIGN BASED ON AN INTEGRATED DYNAMIC MODEL WITH ANTI-LOCK BRAKING SYSTEM AND ADAPTIVE AUTOMATIC CONTROL
This research presents the design and development of a mathematical model for a vehicle steering system guided by the Antilock Braking System (ABS) with integrated automatic control. The purpose of this study is to enhance vehicle stability and steering performance, particularly under critical…
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Artikel Jurnal
PERCENTAGE OF HOT MIX ASPHALT MODIFICATION WITH HDPE POLYMER AND SYNTHETIC RUBBER COMPOSITE COMPOSITION BASED ON MARSHALL IDENTIFICATION AND COMPRESSIVE TEST
Hot Mix Asphalt is a combination of natural material composition with asphalt in the needs of highway infrastructure that is much needed. This study aims to identify the parameters of asphalt mixtures combined with HDPE type polymers and synthetic rubber in weight percentages of 4%, 5%, and 6% at…
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Artikel Jurnal
STUDY OF UNDERWATER FRICTION STIR WELDING PROCESS PARAMETERS ON AA6005-T6 MATERIAL FOR MARINE INDUSTRY AND UNDERWATER STRUCTURE APPLICATIONS
This research explores Underwater Friction Stir Welding (UFSW) on AA6005-T6 material, focusing on identifying optimal process parameters to enhance joint quality in terms of macrostructure, tensile strength, impact strength, and hardness. The results from UFSW welding of AA6005-T6 indicate that…
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Artikel Jurnal
RELIABILITY EVALUATION OF OVERHEAD POWER TRANSMISSION SYSTEMS TO SUPPORT ELECTRIC RAILWAY OPERATIONS IN THE JABODETABEK AREA
Overhead catenary system (OCS) is a vital infrastructure for the operation of electric railway trains as it delivers electrical power from the traction substation to the train pantograph. Increasing train trips in urban areas imposes additional mechanical and electrical loads on OCS components…
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Artikel Jurnal
COMPARATIVE STUDY OF HYPERELASTIC MODELS FOR THERMOPLASTIC ELASTOMERS IN SOFT ROBOTICS
The accurate prediction of mechanical behavior in thermoplastic elastomers (TPEs) is essential for improving the performance of soft robotic grippers. This study presents a comparative evaluation of three hyperelastic models—Neo-Hookean, second-order Yeoh, and first-order Ogden—applied to NinjaFlex…
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Artikel Jurnal
FITNESS FOR SERVICE OF GAS COMPRESSOR PIPING USING FINITE ELEMENT METHOD
This research presents a Level 3 Fitness for Service (FFS) analysis, focusing on stress evaluation in the suction side of gas compressor piping in a gas-fired power plant in Indonesia, using the Finite Element Method (FEM). To expedite numerical calculations and reduce computational time, the…
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Artikel Jurnal
SIMULATION OF MONOCOQUE CHASSIS STRUCTURE OF ELECTRIC VEHICLES BASED ON COMPOSITE MATERIALS
The chassis is one of the main components in a prototype electric motor vehicle, serving as the structural support for the drivetrain, steering system, and driver safety. This study aims to design and simulate a monocoque composite chassis as an alternative to the conventional ladder frame. The…