710 hasil
Menampilkan 461–480 · 0,08 detik · RSS
-
Artikel Jurnal
PENGARUH PENAMBAHAN HIDROKSIAPATIT DAN KITOSAN PADA PLA DAN ABS TERHADAP SIFAT MEKANIK DARI KOMPOSIT BIOMATERIAL
The purpose of this study is determine the mechanical properties of PLA-Hap-Chitosan and ABS-HAp-Chitosan composites. Poly lactic acid (PLA) and acrylonitrile butdie styrene (ABS) are polymers that can be applied in the biomedical field because they the to decompose naturally in the human body. To…
-
Artikel Jurnal
PENGARUH PERLAKUAN ALKALI TERHADAP SIFAT FISIS DAN MEKANIS SERAT LANTUNG (ARTOCARPUS ELASTICUS)
Alkali treatment of natural fibers is one of the chemical treatments used to increase the exposed cellulose content through the removal of hemicellulose and lignin on the fiber surface. This study aims to investigate the effect of alkali treatment on the physical and mechanical properties of…
-
Artikel Jurnal
EVALUASI PERLAKUAN EQUAL-CHANNEL ANGULAR PRESSING (ECAP) DENGAN RUTE Bc PADA BATANG TITANIUM (Ti-ROD) DENGAN ANALISIS DIFRAKSI SINAR-X
In this study, commercial titanium rod was treated by equal-channel angular pressing (ECAP) with Bc route and two passes. This treatment was then evaluated by means of x-ray diffraction (XRD) analytical method. The evaluation was concentrated in crystal structure and residual lattice strain…
-
Artikel Jurnal
PERFORMANCE SIMULATION ON THE SHELL AND TUBE OF HEAT EXCHANGER BY ASPEN HYSYS V.10
Heat exchanger type shell and tube, which is the most commonly used heat exchanger in various industries. The efficiency of heat exchangers can be seen from their performance to affect its economy from a process. The purpose is to determine the influence of the hot fluid flow rate and the cold…
-
Artikel Jurnal
ANALYSIS OF FUEL OIL SUPPLY CHAIN RISK MANAGEMENT AT JATINEGARA LOCOMOTIVE DEPO
PT. Kereta Api Indonesia (Persero) or PT. KAI is one of the State-Owned Enterprises which is engaged in inland transportation, namely trains. In the process of providing transportation services, PT. KAI requires a continuous supply of fuel oil. In the operation of the fuel supply chain, PT. KAI has…
-
Artikel Jurnal
ANALISIS SIMULASI PENGARUH VARIASI JARAK DAN MATERIAL SIRIP KONDENSOR AC SPLIT TERHADAP LAJU PERPINDAHAN PANAS
According to the functions and needs, in the future Air Conditioners must be able to have good performance as an air conditioning machine. Therefore, the Air Conditioner (AC) must be designed as well as possible to meet human needs which will increase in the future in terms of air conditioning, so…
-
Artikel Jurnal
KARAKTERISASI PENGECORAN POROS BERULIR (SCREW) DENGAN VARIABEL PADUAN UNSUR TITANIUM BORON DAN MAGNESIUM
Aluminum is a non-ferrous metal that is widely used in everyday life, both on a large and small industrial scale as well as a household scale. In this research, used diesel motor piston material for casting screw. The addition of 0.1%, 0.3% Titanium Boron (Ti-B) and 0.1%, 0.3% Magnesium (Mg) for…
-
Artikel Jurnal
ANALISA NUMERIK PENINGKATAN TRANSFER KALOR ALIRAN TURBULEN FLUIDA NANO TiO₂/AIR PADA CIRCULAR MINICHANNEL
Conventional heat transfer fluids such as water, ethylene glycol and oil are limited by their poor thermal properties therefore it is needed the advanced heat transfer fluids that be able to improve their thermal performance. Nanofluids is a colloidal dispersion of nano-sized particles which are a…
-
Artikel Jurnal
PENAMBAHAN KATALIS BIO KARBON AKTIF UNTUK PENINGKATAN PRODUKSI HDROGEN PADA ELEKTROLISIS AIR
Air electrolysis is the decomposition of air compounds (H2O) into Oxygen and Hydrogen using an electric current. Currently, the efficiency of conventional electrolysis is about 50%. The use of catalysts is part of an effort to increase Hydrogen production. In this paper, 50 ppm and 100 ppm of Bio…
-
Artikel Jurnal
IDENTIFIKASI PENYUMBATAN ALIRAN AIR PADA PIPA DENGAN METODA GETARAN
The piping system design due to pressure will experience vibrations due to the excitation force that comes from the pump. Excitation force occurs due to changes in fluid flow velocity. In addition, the length of the pipe and the large number of bends of the pipe due to cross with other…
-
Artikel Jurnal
PENGARUH FREKUENSI GETARAN TERHADAP SIFAT FISIS DAN MEKANIK PADA SAMBUNGAN LAS MIG ALUMINIUM PADUAN AA 6061-T6
AA 6061-T6 aluminium alloy is one of the 6xxx series that is widely used in engineering, especially automotive, aircraft, piping, and shipbuilding industries because it has many advantages. Despite AA 6061-T6 has a relatively good weldability, the strength of the weld joints is lower compared to…
-
Artikel Jurnal
PERMODELAN INVERSI PEREDAM MAGNET-REOLOGI BERBASIS JARINGAN SARAF TIRUAN UNTUK SISTEM KENDALI
The application of artificial neural network (ANN) models in magnet-rheological damper modeling is of great interest in recently challenges. Therefore, this study aims to propose a solution to overcome this problem by conducting inverse modeling using an artificial neural network. This inverse…
-
Artikel Jurnal
STUDI KASUS IDENTIFIKASI KERUSAKKAN MESIN BERDASARKAN SINYAL GETARAN
The machine maintenance strategy is very important in manufacturing, mining, and other industries so an appropriate maintenance strategy is needed based on industrial operating conditions. In this paper, a Proactive maintenance strategy is presented, in which this strategy requires the…
-
Artikel Jurnal
APLIKASI GAS HHO PADA SEPEDA MOTOR INJEKSI DENGAN MODIFIKASI ECU AFTERMARKET (TIMING PENGAPIAN)
HHO gas is a gas produced from electrolysis, which is the decomposition of an electrolyte using an electric current which produces Hydrogen Gas and Oxygen Gas / Hydrogen Hydrogen Oxygen. The purpose of this study was to determine the application of HHO gas by increasing ignition timing by 3º, 6º…
-
Artikel Jurnal
STUDI KOMPARASI MOTOR BAKAR 6 TAK DENGAN SIKLUS DUA KALI PENGAPIAN MENGGUNAKAN BAHAN BAKAR PERTAMAX DAN ETANOL
The six-stroke combustion engine is a refinement of the four-stroke machine by adding two strokes of the four-stroke combustion engine. The two steps in question are the second compression stroke and the second expansion stroke. The method used is an experimental research method. This study aims to…
-
Artikel Jurnal
PRODUKSI BIODIESEL DARI MINYAK KELAPA SAWIT DENGAN CO-SOLVENT FAME (FATTY ACID METHYL ESTERS) DAN APLIKASINYA PADA MOTOR BAKAR
The process of transesterification is slow due to the low solubility of triglycerides in methanol. The limitation of mass transfer can be overcome by adding a co-solvent. Co-solvent FAME is the right choice because it is the product of the reaction itself so that it does not require a separation…
-
Artikel Jurnal
SIMULASI PERUBAHAN BEBAN PEMBANGKIT LISTRIK TENAGA UAP: STUDI KASUS DI GORONTALO UTARA
Conceptual and design studies on 25 MW Northen Gorontalo steam based power plant are carried out under the existing comissioning data at four different load. The urgency of this study is related with supporting the prevention of greenhouse gass emission and completing indonesian power plant energy…
-
Artikel Jurnal
STUDI PERANCANGAN KAPAL FERRY RO-RO MODEL KATAMARAN DI PERAIRAN DANAU TOBA
Samosir is an island in North Sumatra which is used as a tourist destination because of the beauty of its lake. Crossing to the island of Samosir requires a ship as sea transportation. Based on data from the Ministry of Transportation, Ajibata Port, the process of crossing vehicles on holidays has…
-
Artikel Jurnal
PENGARUH JARAK NOSEL UDARA DENGAN OUTLET TERHADAP DIS-TRIBUSI UKURAN BUBBLE YANG DIHASILKAN OLEH MBG TIPE SWIRL
This research uses a swirl type MBG (MBG) with the gap variation between the air nozzle and the outlet of 1, 5 and10 mm. In this experiment, we used a tangential inlet of 25 mm and an outlet of 20 mm with a water flow rate of 20 – 70 l/min and an air flow rate range of 0.1 – 0.8 l/min, to determine…
-
Artikel Jurnal
ANALISA TRANSFER PANAS PADA KONDENSASI LUAR DENGAN MENGGUNAKAN REFRIGERANT R-134a
An experimental study in condensation has been conducted to analyse the condensation phenomena. The enhancement heat transfer performance is as always highlighted phenomenon for being investigated. The modified surface is a common method for enhancing the performance of condensation since inducing…