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Artikel Jurnal
PENGARUH TEMPERATUR AUSTEMPERING TERHADAP SIFAT MEKANIK DAN STRUKTUR MIKRO BESI COR KELABU DENGAN NIKEL 10% UNTUK KOMPONEN BOILER PLTU
Effect of austempering temperature on microstructure and mechanical properties gray cast iron with 10%wt nickel for boiler combustion application has been studied. Cast iron with the JIS FCD 45 standard with a minimum tensile strength of 414 MPa and a hardness of 187 HB is commonly used for this…
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Artikel Jurnal
TRIBO-CORROSION INVESTIGATION ON MATERIAL 316LX MANUFACTURING RESULT OF 3D PRINTING MATERIAL ADDITIVES IN 5% H2SO4 SOLUTION
Tribocorrosion is a type of material degradation caused by simultaneous wear and corrosion of metal surfaces caused by laminar or turbulent flow. Additive manufacturing technology plays an important role in its application to precision components and complex assemblies. This study developed a 316LX…
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Artikel Jurnal
PEMODELAN SISTEM DINAMIK DAN IMPLEMENTASI SIMULINK PENGENDALIAN KESTABILAN UNMANNED AERIAL VEHICLE MULTIROTOR HEXACOPTER CARGO
The rapid growth of Unmanned Aerial Vehicle (UAV) technology, or drone, has shown its popularity and has been significantly applied to various purposes today. Nevertheless, with all the sophistication of drones, many related topics are still attractive, especially when a drone is designed to carry…
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Artikel Jurnal
UPAYA PERBAIKAN SIFAT MEKANIK BAJA PLAT JOIN G 3131 SPHC MELALUI SIMULASI PROSES INTERCRITICAL ANNEALING DI INDUSTRI KONSTRUKSI BAJA
Improvement of the mechanical properties of G3131 SPHC equivalent to JIS G 3101 SS330 plate joint steel through intercritical annealing simulations has been carried out. The JIS G 3131 grade SPHC steel was gradually heated by intercritical annealing at temperatures of 750–850 oC for holding times…
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Artikel Jurnal
PENGARUH VARIASI KECEPATAN PUTAR DAN DIAMETER PIN TOOLS TERHADAP KUAT GESER DAN STRUKTUR MAKRO SAMBUNGAN FRICTION STIR WELDING DISSIMILAR HIGH DENSITY POLYETHYLENE-POLYPROPYLENE
The purpose of this study is to find out the effect of pin tool turn speed and pin tool diameter on strong shear and macro structure on the friction stir welding dissimilar high-density polyethylene and polypropylene sheets. Variations in welding process parameters used in this study were: rotary…
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Artikel Jurnal
DELAYED CRACKING FAILURE OF A FREEZER BARREL
Freezers were used to produce ice cream, pumped by a screw pump into a barrel. The barrel’s outer surface was operated with NH3 gas at -40 oC and a 12–13 bar pressure. After being in service for 3 years, the unit experienced cracking. The barrel material was Nickel 200, with a base metal average…
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Artikel Jurnal
CITRONELLA OIL AS BIOADDITIVES ON SI ENGINE PERFORMANCE CHARACTERISTICS
Current dynamics of world energy supply have driven various innovations by the industry as well as research communities. Fossil fuels, although experiencing a declining interest due to sustainability issues, remain undeniably crucial since they are nearly irreplaceable in some sectors including…
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Artikel Jurnal
PENGARUH PERUBAHAN TEMPERATUR DAN KOMPOSISI TERHADAP TEKSTUR DAGING ANALOG YANG DIHASILKAN MENGGUNAKAN TEKNIK EKSTRUSI
Analogue meat products currently available are plant-based meats which have a texture and taste like conventional meats. The commonly used ingredient is soy protein. The purpose of this study is to see the interaction of the parameters of the percentage of soybean flour Isolated Soy Protein (ISP)…
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Artikel Jurnal
EFFECT OF SHIELDING GAS ON THE PROPERTIES OF STAINLESS-STEEL SUS 304L PLUG WELDED
The effect of shielding gas composition and welding current on the mechanical-physical properties of plug welding joint stainless steel SUS 304L has been investigated. Metal Inert Gas (MIG) welding was used to join SUS304L with a thickness of 3 mm. The variations of welding current were 80 A, 100…
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Artikel Jurnal
IMO-COMPLIANT ANALYSIS OF THE LARGE ANGLE STABILITY OF CHEMICAL TANKERS DURING THE LOADING AND UNLOADING LIQUID CAUSTIC SODA
MT. Sinar Masela 8831 DWT is a ship transporting oil and chemicals certified by IMO Chemical Class 2,3. According to Chapter B, SOLAS CHAPTER VII, regarding water safety, loading and unloading oil and chemicals is categorized as dangerous due to water damage and pollution. Various studies are…
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Artikel Jurnal
KARAKTERISASI BIODEGRADASI PADA KOMPOSIT POLYMER POLYLACTID ACID (PLA) DENGAN PENAMBAHAN CHITOSAN DAN HYDROXYAPATITE
Polylactid Acid (PLA) is a biodegradable polymer made from natural ingredients so it is safe to use for biomaterials. The purpose of this study was to determine the biodegradation characteristics of the addition of chitosan powder and Hydroxyapatite to PLA. There were 4 variations in this study…
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Artikel Jurnal
OPTIMASI MULTIOBJEKTIF PARAMETER PROSES 3D PRINTER JENIS FUSED DEPOSITION MODELLING MENGGUNAKAN GREY RELATIONAL ANALYSIS-TAGUCHI
The development of fused deposition modelling (FDM) 3D printer models is increasing where the applications can be found in several aspects such as rapid prototyping, functionally components, and parts for assembly process. These conditions required excellent printing quality. One of the factors…
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Artikel Jurnal
PHYSICAL-MECHANICAL PROPERTIES OF PINEAPPLE LEAF FIBRE REINFORCED IN UNSATURATED POLYESTER RESIN FILLED WITH CALCIUM CARBONATE
Using natural fibres is often recommended as polymer composite materials owing to their potential to reduce the pollution of synthetic material waste. This study aimed to obtain the physical properties of unsaturated polyester resin matrix composite containing calcium carbonate fillers of 15 and 30…
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Artikel Jurnal
PENGEMBANGAN DESAIN CIRCULAR DAN SQUARE CRASHBOX DENGAN PENAMBAHAN HONEYCOMB SEBAGAI FILLER PADA MODEL BEBAN FRONTAL DAN OBLIQUE
In the previous study, several researchers had developed circular and square crash box designs to enhance energy absorption. In this study, circular and square honeycomb filled crash box is investigated by varying the honeycomb cell dimension. Honeycomb filled is selected due to lightweight and…
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Artikel Jurnal
RANCANG BANGUN GRIPPER ROBOT MANIPULATOR 2 DOF KAPASITAS 1,25 KGF
Manipulator robots practically help human to move objects vertically, horizontally, or rotationally. The robot is generally divided into three components, namely arm, base, and gripper with servo motor drive. The aim of this study is to improve the previous gripper robot manipulator design so that…
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Artikel Jurnal
PENGARUH SOLUTION TREATMENT DAN MEDIA PENDINGIN PADA PROSES HOT ROLLING TERHADAP KEKUATAN BAJA MANGAN AUSTENITIK
A steel with high hardness but relatively low ductility and toughness is called austenitic manganese steel. This steel implementation often suffers from defect and failure. Responding to this problem, the study was done by manipulating a heat treatment process in order to change the microstructure…
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Artikel Jurnal
OPTIMASI UNJUK KERJA KINCIR AIR UNDERSHOT
The purpose in this research, the performance of the undershot waterwheel with hydraulic channel modifications were investigated. Testing was carried out on undershot waterwheel with diameter of 0,48 m, width of 0,10 m and the number of blades of 12. Weir of 0,24 m, length headrace of 0,1 m under…
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Artikel Jurnal
MENINGKATKAN EFEKTIVITAS KONDENSOR VERTIKAL PIPA HELIKAL KOIL UNTUK DESTILASI MINYAK ATSIRI SEREH
The main focus of this research is to modify the straight pipe of the Citronella essential oil distillation condenser using a helical coil pipe to shorten the distillation time. This study aims to obtain an effective shell-side fluid volumetric rate to shorten the distillation time. The volumetric…
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Artikel Jurnal
PENGARUH CLEARANCE DAN PEMBEBANAN RADIAL TERHADAP PERPINDAHAN, DISTRIBUSI BEBAN KONTAK, DAN KEKAKUAN ELEMEN ROL PADA SPHERICAL ROLLER BEARING
This study aims to determine the effect of clearance and loading regarding to the displacement, distribution of contact loads and stiffness of spherical roller bearings at rest. The displacement formulation of the inner ring of the bearing was developed by defining the angle of inclination of the…
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Artikel Jurnal
PENGARUH LAJU ALIR TUNGSTEN IN-ERT GAS TERHADAP KEKUATAN TARIK DAN KEJUT PADA SAMBUNGAN LAS TIG BAJA GALVANIS DAN ALU-MINIUM 5052 DENGAN FILLER AL-SI 4043
This study aims to determine the effect of the protective gas flow rate on the tensile and shock strength of welded joints of dissimilar metals, namely aluminum 5052 – galvanized steel with Al-Si 4043 filler using argon gas as a shielding gas. The protective gas flow rate parameters used in this…