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Artikel Jurnal
Design and Structural Performance Evaluation of a Motorcycle Disc Brake Testing Device using Finite Element Method
The increasing demand for reliable motorcycle braking systems requires accurate performance evaluation under controlled conditions, where a brake testing device plays an important role and its structural integrity becomes a key factor in ensuring safe and stable operation. The design and structural…
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Artikel Jurnal
INVESTIGATION OF ATMOSPHERIC CORROSION OF LOW-CARBON STEEL IN KUALA TANJUNG BATU BARA
Corrosion is one of the most problematic issues in the material industry that may generate tons of drawbacks. In recent years, Kuala Tanjung has experienced an increase related to the development of infrastructure including trestles and docks that are capable to accommodate mother vessels…
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Artikel Jurnal
MORPHOLOGY, STRUCTURE AND MECHANICAL PROPERTIES OF NATURAL CELLULOSE FIBER FROM OIL PALM FROND FIBER (ELAEIS GUINEENSIS JACQ)
Natural fiber is one of the innovations in the development of renewable materials from composites which are considered more environmentally friendly. One of the advantages is that it is biodegradable which are able to decompose in nature and does not leave residues that are harmful to the…
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Artikel Jurnal
DEVELOPMENT OF LOW-HEAD CROSSFLOW TURBINE PICOHYDRO POWER PLANTS
The provision of food, the provision of energy and the provision of information are controlled to improve people's welfare. In 2011, national electricity production by PLN was 11% new and renewable energy. 6% PLTA and 5% PLTP. PLN plans Geothermal Energy to be 13% and Hydro Power Plant still 6%…
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Artikel Jurnal
IMPROVED HARDNESS AND CORROSION BEHAVIOUR OF ALUMINIUM 6061 ALLOY THROUGH ECAP PROCESSING
The study was done to evaluate the effect of equal channel angular pressing (ECAP) processing on the hardness, optical morphology, and corrosion behavior of Al-6061 alloy. The samples were first annealed, and continued with ECAP process using the Bc route at 120° of internal channel angle with…
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Artikel Jurnal
DIMENSIONAL ACCURACY OF 3D PRINTED DOG BONE STRUCTURES
The current study provides a comprehensive discussion regarding statistical analysis of dimensional accuracy comprising thickness, gauge section width, circularity and cylindricity for 3D printed polylactic acid (PLA) specimens according to the dimensional specifications of ASTM D638 standard type…
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Artikel Jurnal
DESIGN OF A SINGLE-STAGE AXIAL POWER TURBINE IN AN ULTRA-MICRO GAS TURBINE ENGINE
Today's electrical energy needs require several alternative power and electrical energy storage. One system that can be developed to meet these needs is an ultra-micro gas turbine. The single-stage axial power turbine is designed to drive a 182.574 KV BLDC electric motor generator with 50%…
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Artikel Jurnal
FUEL-INJECTED MOTORCYCLE PERFORMANCE OPTIMIZATION UTILISING PERTALITE-ETHANOL BLENDS AND DEEP NEURAL NETWORK-BASED ECU FOR EFFICIENCY IMPROVEMENT AND EMISSION REDUCTION
This study aims to optimize the performance of fuel-injected motorcycles through the application of a Deep Neural Network (DNN) in the Electronic Control Unit (ECU) and the use of ethanol-pertalite fuel blends. The ethanol blends used in the study were 0%, 5%, 10%, 15%, and 20%. Fuel consumption…
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Artikel Jurnal
CHARACTERIZATION OF SPECIFIC HEAT CAPACITY OF WATER-ALUMINUM OXIDE-BASED NANOFLUIDS
Since the advent of nanofluids, engineers have expected major gains in thermal‐system efficiency. Yet a key property—specific heat capacity (Cp)—remains poorly understood, because Cp is not a single value but a spectrum governed by nanoparticle size, shape, material, and concentration. Deeper…
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Artikel Jurnal
ANALYSIS OF FRACTURE ENERGY IN DOUBLE CANTILEVER BEAM SIMULATION USING COHESIVE ZONE MODEL AND VIRTUAL CRACK CLOSURE TECHNIQUE
Composite materials are vital in aerospace and other fields due to their high load-bearing capacity and lightweight nature. However, they are prone to failure, particularly delamination, which results from high interlaminar stresses and stress concentrations. This study investigates delamination…
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Artikel Jurnal
DESIGN AND PERFORMANCE OF A 300-WATT HELICAL TYPE H-ROTOR WIND TURBINE
The Helical Type H-rotor turbine is a modification of the Darrieus turbine by Alexander Gorlov to improve the design of the H-Darrieus so the turbine can self-starting in low wind speed conditions. The purpose of this study is to analyze the pitch angle (5°, 0°, and -5°) when using the symmetrical…
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Artikel Jurnal
STRUCTURAL ANALYSIS OF THE PASSENGER NT-60 BOGIE WAGON BOGIE TYPE
The welded bogie railway was typically exposed to very intricate fatigue loads, resulting in a significant risk of failure. However, most standards only took into account external excitations from wheel-rail system when evaluating fatigue performance. NT-60 was a common bogie train fleet in…
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Artikel Jurnal
CO2 CAPTURE USING DISSOLVED AMMONIA (NH4OH) - ARTICLE REVIEW
The rise in carbon dioxide (CO₂) emissions has accelerated efforts to develop environmentally sustainable alternative carbon capture and utilization technologies. Among the promising approaches is the use of ammonium hydroxide (NH₄OH) for CO₂ capture. The objective of this study is to…
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Artikel Jurnal
DESIGN OPTIMIZATION OF BREAD-BAKING OVEN CHAMBER: A COMPUTATIONAL FLUID DYNAMICS (CFD) APPROACH TO THE TEMPERATURE DISTRIBUTION
This paper presents a Computational Fluid Dynamics (CFD) simulation of a bread oven under steady-state conditions. An experimental measurement methodology was performed to determine the temperature distribution characteristics in the oven chamber. The CFD model simulation of the bread oven shows a…
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Artikel Jurnal
ULTIMATE TENSILE STRENGTH ANALYSIS OF AN EPOXY COMPOSITE WITH PALM FIBERS AND ARECA CATECHU FIBERS
There are many types of reinforcement that can be used in the making of composites, and one of the more recent and popular ones is fiber-reinforced polymer. There are many types of fibers that can be used for the composite; this experiment will focus on natural fibers, specifically palm branch…
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Artikel Jurnal
NUMERICAL STUDY OF THE DESIGN OF THE RECLINING HANDLE FOR THE TOYOTA KIJANG CAPSULE MADE FROM COMPOSITE MATERIAL REINFORCED WITH SUGARCANE BAGASSE FIBERS
Rapid advancements in science and technology have increased the demand for renewable and high-performance composite materials. Sugarcane bagasse, an agricultural waste, has potential as a natural fiber reinforcement in composite materials. This study investigates the use of sugarcane bagasse fibers…
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Artikel Jurnal
THERMODYNAMIC ANALYSIS OF ALKALINE ELECTROLYSIS UNDER VISIBLE LIGHT ILLUMINATION: COMPARATIVE ASSESSMENT OF GREEN AND BLUE LED EXPOSURE
This study explores the thermodynamic behavior of alkaline electrolysis under visible light illumination, focusing on the effects of green and blue wavelengths in the absence of chemical additives. Through a series of controlled experiments, temperature evolution, energy input, and thermal…
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Artikel Jurnal
ANALYSIS OF SPARE PARTS REQUIREMENTS BASED ON THE FAILURE RATE OF A COMPONENT USING THE POISSON PROCESS METHOD IN A CASE STUDY AT PT. XYZ
This study presents the conclusions drawn from previous data analysis, highlighting several significant key findings. Firstly, an evaluation using a risk matrix revealed that the critical subsystem for the CC 206 Locomotive is the Diesel subsystem, which consists of four important spare part…
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Artikel Jurnal
EXPLORING BIDARA LEAVES AS A SUSTAINABLE CORROSION INHIBITOR FOR AISI 1045 STEEL IN 3,5% NACL SOLUTION
This research investigated the efficacy of bidara leaf extract (BLE) as a natural corrosion inhibitor for AISI 1045 steel in a 3.5% NaCl solution. Different concentrations of BLE (0%, 0.05%, 0.10%, and 0.15%) were examined by the immersion method, potentiodynamic polarization (PDP), and…
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Artikel Jurnal
FLOW MODELING IN SIDE CHANNEL SPILLWAYS USING THEORETICAL AND NUMERICAL METHODS BASED ON COMPUTATIONAL FLUID DYNAMICS
The spillway is a critical structure in dam projects. Failure to manage extreme flood events, like the Probable Maximum Flood (QPMF), may cause overtopping and dam failure. This study examines the hydraulic characteristics of the Surumana Dam's side channel spillway in Central Sulawesi, Indonesia…