710 results
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Journal Article
Analisa Konveksi Paksa (Pemaksaan Udara Masuk) pada Proses Pembakaran Briket Ampas Sagu
In previous studies, the initial process of burning briquettes still takes a long time, i.e. app 15-20 minutes. In normal briquette burning, a flame comes out from the briquette hole surface. The purpose of this research is to find a solution to accelerate the burning process and then the solution…
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Journal Article
Deteksi Cacat Roda Gigi pada Sistem Transmisi Fan Industri Menggunakan Support Vector Machine
A fan is a mechanical device that produces airflow in a particular area. To achieve sufficient torque and speed, an industrial fan often uses a gear transmission. During its operation, the gears may experience damage. The vibration spectrum is a common method to detect a faulty gear. However, the…
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Journal Article
Karakterisasi Sifat Termofisika Paduan Titanium Ti6Al4V
Manufacturers are pushed to use superalloys such as titanium alloys in the aerospace part due to environmental and economic issues. The refractory properties of titanium alloys result in rapid and premature wear of the cutting tools, especially by thermal diffusion. Therefore, the purpose of this…
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Journal Article
[Retracted] Investigasi Simulasi Numeris dan Eksperimen Proses Springback Berbentuk Cup Silinder pada Lembaran Baja Karbon SPCC
THIS ARTICLE HAS BEEN RETRACTED UNDER THE AUTHOR'S REQUEST BECAUSE IT WAS PUBLISHED IN ANOTHER JOURNAL. The sheet metal forming (SMF) process is one of the manufacturing processes that essential and commonly used in the automotive industry. Compared with casting and forging, forming process into…
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Journal Article
Simulasi Pengaruh Excess Air terhadap Kinerja PLTU Kapasitas 12,5 MW pada Beban Bervariasi
The excess air is required to complete the combustion of fuel in the boiler. The amount of excess air differs from each power plant. It depends on the characteristic of the fuel such as the type and size of the fuel particle, the type of boiler and the type of combustion. Excess air that is too…
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Journal Article
Performa Termal dan Hidrolik Aliran Udara Melalui Vortex Generator Berlubang Tipe Concave Rectangular Winglet di dalam Saluran Persegiempat: Studi Eksperimen
Fin and tube heat exchangers use gas as a cooling/heating medium on the fin side. The low thermal conductivity of gases results in high thermal resistance, which results in a low rate of heat transfer. Therefore, the researchers sought to reduce thermal resistance on the fin side. This study aims…
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Journal Article
Karakteristik Densitas Dan Indeks Bias Minyak Atsiri Daun Jambu Kristal (Psidium Guajava) Menggunakan Metode Microwave Hydrodistillation Dengan Variabel Daya Dan Rasio Bahan : Pelarut
Crystal seedless guava is a new horticultural commodity that is cultivated in Indonesia and has many benefits. Crystal seedless guava has the potential of essential oil to be extracted from the leaves. Extraction using the microwave hydrodistillation method is an alternative to improve the…
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Journal Article
Produksi Biodiesel dari Dedak Padi dengan Metode In-Situ Dua Tahap Menggunakan Katalis Asam Sulfat dan CaO/Hydrotalcite
In this study, biodiesel is made from rice bran vegetable oil. Biodiesel production was carried out by the in-situ method using two-sides using sulfuric acid catalysts and CaO/hydrotalcite. The solvent used was methanol as an oil component in the material and a reactant in the formation of FAME and…
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Journal Article
Optimasi Parameter Proses Bubut Material ST 60 dengan Pendinginan Ramah Lingkungan Menggunakan Metode Taguchi-Grey
Every production process always needs to produce high quality with high productivity. However, in machining processes, qualities such as surface roughness and productivity such as material removal rates have different characteristics. Surface roughness has the quality characteristics smaller the…
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Journal Article
Desain dan Pembuatan Alat Monitoring Kerusakan Mesin Berdasarkan Level Getaran
In industry, vibration frequently occurs on rotating machines. In case of vibration level, it can cause damage to machines. Therefore vibration level should be continuously checked by using a predictive maintenance method in order to prevent the severe fault. In this study, a vibration monitoring…
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Journal Article
Pengaruh Fraksi Volume Komposit Polyester Berpenguat Limbah Serbuk Kayu Bangkirai terhadap Sifat Material Akustik
The use of Glasswool as a commercial sound absorber is growing rapidly nowadays. Unfortunately, this material contains a high silica fiber which is harmful to human health. Herein, we present an improved preparation route of the composite material consisted of natural fiber made from Bangkirai wood…
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Journal Article
Pengaruh Variasi Konsentrasi Inhibitor dari Kitosan Sisik Ikan terhadap Perilaku Korosi Besi ASTM A36: Studi Ekstrapolarisasi Tafel dan EIS
Corrosion is the deterioration of metal that can reduce its yield strength, ultimate strength, financial losses, waste of natural resources, and endanger security. Thus, the corrosion rate must be slowed, or if possible, stopped. This study aimed to investigate the mechanism of corrosion protection…
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Journal Article
Pengaruh Thermal Shock dan Komposisi Grafit, Kaolin (Clay) terhadap Struktur Makro dan Ketahanan Impact Kowi Berbahan Dasar Limbah Evaporation Boats
The purpose of this study was to determine the effect of thermal shock and composition of graphite, kaolin (clay) on the macrostructure and impact resistance of crucible based on the waste of evaporation boats. The variation applied was composition waste of evaporation boats, graphite and kaolin…
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Journal Article
Pengaruh Variasi Persentase Reduksi pada Proses Pengerolan Panas terhadap Sifat Mekanik dan Struktur Mikro Baja Laterit
Lateritic ore is one of the raw materials for the steel industry. Lateritic ore processed into laterite steel has more advantages than steel in the market. It has better tensile strength, hardness, corrosion resistance, and welding properties. Lateritic steel is made by performing a casting…
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Journal Article
Karakteristik Pembakaran Droplet dengan Variasi Komposisi Campuran Bensin - Etanol
The objective of this research is to investigate the droplet combustion characteristics of gasoline-ethanol fuel blended. The combustion characteristics included ignition delay time, burning lifetime, burning rate constant, flame height, flame temperature, and microexplosion. Testing was conducted…
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Journal Article
Pengaruh Kecepatan Pengadukan Proses Rheocasting terhadap Struktur Mikro dan Fluiditas Paduan Al-Cu
Rheocasting with the aim of developing and offering solutions to problems related to the casting process. Rheocasting is a casting process that utilizes solidification agitation to change the dendritic structure to non-dendrite (globular) by giving a variation of the stirring speed. Al-Cu is a…
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Journal Article
Aplikasi Teknologi Single Point Incremental Forming (SPIF) pada Pembentukan Half Spherical-Shaped Product
In this study, the single point incremental forming (SPIF) method was applied to the half spherical-shaped vent cap products with 1mm thickness of aluminium. The dimensions of the blank before forming is 1x Ø225mm, and the final dimensions of the product are 69.50 x Ø225mm. Blank material is…
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Journal Article
Pengaruh Kecepatan Udara pada Alat Pengering Jagung dengan Mekanisme Penukar Kalor
The purpose of this study was to design and determine the performance of a dryer for drying corn with biomass burning energy sources. The dryer consists of a biomass stove, a heat exchanger, and a drying cabinet. The dimensions of the biomass stove are 500 x 500 x 800 mm with a diameter and hole…
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Journal Article
Skema JCM (Joint Crediting Mechanism) pada Investasi Fasilitas Pemurnian Biogas di Pabrik Kelapa Sawit
Until now, the use of biogas in Palm Oil Mill (POM) is still limited to use as a fuel for Biogas Power Plant or utilize an additional boiler fuel. The use of biogas to be taken to other places is constrained by the remote location of POM and the transportation method. However, by converting biogas…
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Journal Article
Analisa Pengaruh Konsentrasi Limbah Serat Aren dan Limbah Kertas dalam Pembuatan Papan Komposit terhadap Modulus Rupture
Composite is a new type of engineered material consisting of two or more materials in which the properties of each material differ from one another both chemical and physical properties and remain separate in the final result of the material. Composites have the characteristics of being…