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Artikel Jurnal
RANCANG BANGUN ALAT BANTU PEMASANGAN PEGAS STRIPPER PRESS TOOL DENGAN SISTEM HIDROLIK
A press tool is used to cut or form a thin plate into the desired shape with a pressing process or a press machine. One of the main things in the design of the press tool is the calculation for determining the type, size and, material of the spring. The spring in the press tool design is placed on…
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Artikel Jurnal
ANALISIS DESAIN BANTALAN CELANA UNTUK PENDERITA HEMOROID (AMBEIEN)
Hemorrhoids are an anorectal disease due to dilation of the blood vessels around the anus. At a certain level, hemorrhoids often cause pain complaints experienced by some patients, especially during sitting. One of the solution is to use a special underpants in which it reduces the pain during…
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Artikel Jurnal
PENGARUH UKURAN PARTIKEL SERBUK EVAPORATION BOATS DALAM PEMBUATAN KOWI (CRUCIBLE) TERHADAP KEKUATAN IMPACT DAN STRUKTUR MAKRO
Kowi or crucibles come from refractory materials. This study aims to determine the effect of the powder particle size of evaporation boats on impact resistance and macro structure. The research method used is experimental research. The variation applied was a variation of the particle size of the…
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Artikel Jurnal
PENGARUH TEMPERATUR CETAKAN TERHADAP STRUKTUR MIKRO DAN KEKERASAN PISTON HASIL PENGECORAN MENGGUNAKAN 3D PRINTING
Motorcycle users in 2019 reached 133,617,012 units in Indonesia. The impact of a large number of motorcycle certainly attracts the interest of the industry to produce two-wheeled automotive vehicles. The piston is part of the engine that functions as a compression barrier in the combustion chamber…
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Artikel Jurnal
KARAKTERISTIK PATAH DAN KETAHANAN LELAH BESI COR MALLEABLE
Malleable cast iron is one of the cast irons that has excellent forging properties. Malleable cast iron is the result of heat treatment of white cast iron, so that cementite is decomposed to form graphite in the form of rosettes. Malleable cast iron is often used for tooling and on railway…
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Artikel Jurnal
ANALISIS HOLDING TIME POST WELD HEAT TREATMENT (PWHT) PADA PENGELASAN MATERIAL SA-213 GRADE T91 DENGAN SA-213 GRADE T22 UNTUK APLIKASI BOILER
Superheater is one of the boiler components that works to heat the saturated steam coming out of the steam drum, by utilizing hot gases from combustion. In this study using Gas Tungsten Arc Welding (GTAW) and using SA-213 grade T91 and SA-213 grade T22, these two materials require Post Weld Heat…
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Artikel Jurnal
DINAMIKA DAN NYALA API PEMBAKARAN DROPLET CAMPURAN METIL LAURAT – METIL OLEAT
This research intended to investigate the dynamics and flame of the droplet combustion of methyl laurate - methyl oleate blended. Methyl oleate is an unsaturated FAME with a relatively long carbon chain, frequently found as the dominant component in various biodiesel. Meanwhile, methyl laurate is a…
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Artikel Jurnal
ANALYSIS OF FIXED CARBON AND VOLATILE MATTER BRIQUETTES OF PINE SAWDUST AND COCONUT SHELL WASTE
Briquetting technology became one appropriate method that can be used to convert biomass waste into a renewable energy source. Sources of biomass raw materials that have promising potential are pine sawdust and coconut shell waste. Sawdust has potential for about 0.78 million m3/year and coconut…
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Artikel Jurnal
SIMULATION-BASED ASSESSMENT KINERJA TERMAL PADA CONCENTRIC TUBE HEAT EXCHANGER
The double-pipe heat exchanger is one of the most popular heat exchanger devices. In this study, the concentric tube heat exchanger as the double pipe heat exchanger device was simulated with ANSYS code FLUENT. The simulation was done by based on the Reynolds number variation from 400010.000 using…
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Artikel Jurnal
PERANCANGAN DAN MODIFIKASI MOLD INSERT UNTUK MENINGKATKAN KAPASITAS PRODUKSI LIGHT GUIDE
The use of plastic is often found in human life. Therefore, many manufacturing companies are competing to increase the production and quality of their plastic products. One way to increase production is to redesign a Mold base so that the Mold has a larger production capacity than before. The…
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Artikel Jurnal
A COMPREHENSIVE REVIEW ON THE NON-DESTRUCTIVE TEST FOR POLYMER MATRIX COMPOSITE
Polymer matrix composite (PMC) is widely applied in structural engineering mainly due to its high strength-to-weight ratio. Of many benefits, the transportation industry uses this type of material mainly due to its high strength-to-weight ratio. In many cases, this strength-to-weight ratio is…
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Artikel Jurnal
THE EFFECT OF INFILL PATTERN AND DENSITY PARAMETERS ON TENSILE STRENGTH OF POLYMER MATERIALS IN 3D PRINTING
One of the references for selecting materials in designing a machine component is its mechanical property which is tensile strength. However, the current tensile strength from the materials used in 3D printing products has not been standardized due to many parameters in the design and process that…
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Artikel Jurnal
PENGARUH JARAK DAN PANAS SINAR LASER TERHADAP HASIL ENGRAVING PADA MATERIAL KAYU MENGGUNAKAN MESIN CNC LASER DIODE
Testing the effect of distance and laser beam heat on engraving results using two specimens as test materials, namely teak wood and durian wood. The testing process is to make circles and rectangles with a diameter of 20 mm which are inputted into the program followed by the engraving process. The…
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Artikel Jurnal
ANALISIS PENGARUH ARUS PADA PENGELASAN BERTINGKAT (MULTILAYER WELDING) TERHADAP STRUKTUR MIKRO, KEKERASAN DAN KUAT TARIK SAMBUNGAN MATERIAL ASTM A106
This aims of this study to determine the effect of multilayer welding on ASTM A106 type carbon steel pipe material on the characteristics of the microstructure, hardness and maximum tensile strength of the material. ASTM A106 type carbon steel pipe is used as a raw material for welding using the…
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Artikel Jurnal
PENGARUH ARUS DAN WAKTU PADA MICRO RESISTANCE SPOT WELDING TERHADAP BAJA AISI 304 DAN ALUMINIUM PADUAN
Welding is often used in industry as a joining technique, one of which is Micro Resistance Spot Welding (MRSW). MRSW was carried out to know the maximum load and shear stress produced on separate worksheets using AISI 304 and aluminum alloys and then connected using a lap joint. This study uses…
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Artikel Jurnal
KARAKTERISASI SIFAT MEKANIK DAN STRUKTUR MIKRO PADA BAJA PADUAN RENDAH HASIL PROSES HARDENING
The purpose of this study was to determine how the mechanical properties and microstructure formed on low alloy steel (tooth bucket) heated at temperatures of 850 ⁰C and 850 ⁰C then held for 15 minutes after that it was cooled with oil. The material hardening process was carried out by testing the…
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Artikel Jurnal
PHYSICAL, MECHANICAL, AND MORPHOLOGICAL CHARCTERISTICS OF KAPOK (CEIBA PENTANDRA) TREE BARK AND EPOXY COMPOSITE WITH COATING (AESO) TREATMENT
Environmentally friendly composites continue to be developed from kapok tree fiber (Ceiba pentandra) with an epoxy matrix. This study aims to characterize the tensile behavior of single fiber and its composite, the pull-out properties of kapok tree fiber, and morphology of the fiber. Kapok tree…
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Artikel Jurnal
PERILAKU AUS DAN KOROSI LAPISAN BAJA TAHAN KARAT 420 DENGAN METODE ELECTRIC ARC SPRAY
Thermal spray coating is a material protection process by depositing the coating material on the substrate material. Process parameters such as spray-off distance, surface roughness, and substrate preheat temperature, spray time, voltage, and arc current greatly influence the mechanical and…
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Artikel Jurnal
OKSIDA PEROVSKIT GANDA SMBA0.5SR0.5CO2O5+ᵟ (70%) + SDC (30%) SEBAGAI MATERIAL KATODA SOFC BEROPERASI PADA SUHU MENENGAH
Solid oxide fuel cells (SOFCs) operate at high temperatures (800oC–1000oC), generating fast layer disintegration (anode, electrolyte, and cathode). The goal of the research was to lower the operating temperature in the medium temperature range. The SmBa0.5Sr0.5Co2O5+δ (70%) + Ce0.8Sm0.2O1.9 (30%)…
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Artikel Jurnal
PENGARUH TINGGI CELAH ALIRAN PADA SLUICE GATE TERHADAP KINERJA KINCIR AIR JENIS SUDU MELENGKUNG
This study aimed to determine the effect of adding the sluice gate and the optimal width of the sluice gate on the waterwheel performance. Tests have been carried out experimentally on a laboratory scale. In the test, this study used an open channel waterwheel with variations in the flow gap width…