17 hasil untuk "Sumarji Sumarji"
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Artikel Jurnal
EVALUASI KOROSI BAJA KARBON RENDAH ASTM A36 PADA LINGKUNGAN ATMOSFERIK DI KABUPATEN JEMBER
Atmospheric corrosion is corrosion or degradation of materials in the atmosphere that occurs naturally. The corrosion rate varies for different materials and is influenced by several environmental factors, such as: humidity, temperature, and pollutant (NOx, SOx, Cl-, CO2). This research studies the…
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Artikel Jurnal
STUDI PERBANDINGAN KETAHANAN KOROSI STAINLESS STEEL TIPE SS 304 DAN SS 201 MENGGUNAKAN METODE U-BEND TEST SECARA SIKLIK DENGAN VARIASI SUHU DAN PH
There are many failures in a structure that is caused by the damage of the metal that support them. One of the problem which can cause the damage of the metal is corrosion. With its action, corrosion can make a metal become thin, and in some cases can make a crack and fracture. Some factors are…
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PENERAPAN PEMBELAJARAN MODEL PROBLEM BASED LEARNING UNTUK MENINGKATKAN MOTIVASI DAN KEMAMPUAN PEMECAHAN MASALAH ILMU STATIKA DAN TEGANGAN DI SMK
The basic problems in Vocational High School of Building is the low motivation and learning ability of students, and the learning model with lecture method. Students percentage who gain minimal standard of completeness is just 30% with average value 48,75%, then the further follow up is needed…
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Artikel Jurnal
PENGARUH VARIASI KONSENTRASI INHIBITOR EKSTRAK KULIT BUAH KAKAO TERHADAP LAJU KOROSI PIPA BAJA KARBON A53 PADA MEDIA AIR LAUT
Corrosion is a chemical phenomenon that occurs in metal materials in a wide variety of environmental conditions. always good corrosion causing losses losses that are directly or indirectly impacted. one way of corrosion prevention is the addition of corrosion inhibitors. Corrosion inhibitor is a…
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PENGARUH KONSENTRASI EKSTRAK KULIT BUAH MAJA TERHADAP LAJU KOROSI BAJA KARBON A53 DENGAN MEDIA AIR LAUT
Corrosion is damage or degradation of the metal due to a redox reaction between a metal with a variety of substances in the environment that produce compounds that are not desired. Corrosion is a chemical phenomenon that occurs on metallic materials in a wide range of environmental conditions…
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Artikel Jurnal
KOMPARASI EFISIENSI MATERIAL BAJA KARBON St 37, BAJA KARBON St 41 DAN BAJA KARBON St 60 TERHADAP LAJU KOROSI DI MEDIA AIR MUARA SUNGAI (PAYAU) DENGAN METODE ELEKTROKIMIA
Mouth of the river is the meeting place of river water and sea water . water estuaries (brackish water) has asodium chloride content of between 1% -2.5 whether it's from natural sources around the surrounding river water or a mixture of sea water . many construction or structure that is attached to…
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Artikel Jurnal
ANALISIS KEKERASAN, CACAT LAS, DAN STRUKTUR MIKRO PADA SAMBUNGAN T PADUAN ALUMINIUM 6061 T6511 HASIL GAS METAL ARC WELDING (GMAW) DENGAN VARIASI KUAT ARUS
AA 6061 T6511 is an aluminum alloy with composition Al 96,61 Wt %, Cr 0,04 Wt %, Cu 0,15 Wt %, Fe 0,7 Wt %, Mg 1,15 Wt %, Mn 0,15 Wt %, Si 0,8 Wt %, Ti 0,15 Wt %, and Zn 0,25 Wt %. Gas Metal Arc Welding (GMAW) is a welding process that the energy obtained from an electric arc. Arc welding to occur…
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Artikel Jurnal
ANALISIS SIFAT MEKANIK HASIL PENGELASAN ALUMINIUM AA 1100 DENGAN METODE FRICTION STIR WELDING (FSW)
Aluminum and aluminum alloys have properties that are less well when coMPared to steel, such as specific heat and has a high conductivity. They are also easily oxidized and form an aluminum oxide Al2O3 which have a high melting point. Consequently, when they are welded the fusion between base and…
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Pengaruh Variasi Fraksi Volume Filler Terhadap Kekuatan Mekanik Komposit Sandwich Polyester Serat Kenaf Core Styrofoam
Composite sandwich reinforcement kenaf fiber polyester with Styrofoam core is an alternative material that has the potential to be developed as an application in various fields with an excess of nature that is strong, lightweight, rigid, able to withstand bending loads, impact, vibration damping…
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Artikel Jurnal
PENGARUH BASIC SEDIMENT AND WATER TERHADAP LAJU KOROSI PIPA X52 DAN A53 PADA MEDIA OIL SLUDGE.
This research have a purpuse to know corrosion rate in pipe X52 and A53 at oil sludge media caused BS and W. Corrosion is a damage of metal that occurs because reaction between metal with environtment and produce unwanted of corrosion product. Pipe X52 and A53 is a type of low carbon steel that use…
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Artikel Jurnal
ANALISIS KETAHANAN KOROSI PIPA A53 PADA LINGUNGAN OIL SLUDGE DENGAN METODE C-RING
Corrosion is the degradation of the material surface due to reaction with the environment. Steel pipe is one of the materials vulnerable to corrosion because the piping system is always in contact with the outside environment. This research have a purpose to know influence of cold working about…
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Artikel Jurnal
Asesmen Terpadu: Penerapan Restorative Justice Penanggulangan Kejahatan Narkotika di Indonesia
Asesmen Terpadu merupakan strategi untuk mengefektifkan penegakan tindak pidana narkotika dengan menekan angka permintaan melalui upaya rehabilitasi bagi pecandu dan penyalahguna narkotika. Tulisan ini bertujuan untuk mengkaji mekanisme Asesmen Terpadu dalam tindak pidana narkotika di Indonesia…
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PENGARUH UKURAN PARTIKEL LIMBAH KOPI TERHADAP KARAKTERISASI SIFAT MEKANIK PADA PANEL KOMPOSIT
Panel composite materials using filler coffee waste particles with various particle sizes have been analyzed for effect. The matrix used is 2504APT eterset polyester resin, and the method used in making composites is the vacuum method. Particle size variations used are using mesh sizes 30, 40, 50…
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Artikel Jurnal
Effect of Variation of SiC Mass Fraction on Mechanical Properties of Al-SiC Composite Using Stir Casting Method
Al-SiC is a composite composed of AA6061 as a matrix and SiC as a reinforcement particle. The variation of mass added will affect the mechanical properties of the composite because Al-SiC is hardenable, which means that its mechanical properties can be improved by adding the reinforcement…
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Hardness and microstructure of FDM 3D printed parts using self-made PLA-brass filaments
Technological advancements in the industrial sector have led to rapid developments in 3D printing technology, enabling the creation of three-dimensional prototype models. Various filaments, including polyethylene terephthalate glycol, nylon, and polylactic acid, have been widely adopted in the…
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Heat Treatment and Its Effect on Tensile Strength of Fused Deposition Modeling 3D-Printed Titanium-Polylactic Acid (PLA)
Titanium is a biocompatible metal commonly applied in biomedical fields such as bone and dental implants. Recently, the produced titanium-Polylactic Acid (PLA) filament for 3D printing Fused Deposition Modeling (FDM) technique is easier to operate and affordable. This filament contains less than…