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AME (Aplikasi Mekanika dan Energi): Jurnal Ilmiah Teknik Mesin
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Core Subject : Engineering,
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Articles 40 Documents
ANALISA PRESSURE DROP DENGAN PENAMBAHAN ZAT ADITIF CAIRAN COOLANT PADA PIPA SILINDER MENGGUNAKAN METODE EMPIRIS DAN METODE EKSPERIMEN Setiawan, Irwan; ., Nurrohman; Al Kindi, Hablinur
AME (Aplikasi Mekanika dan Energi): Jurnal Ilmiah Teknik Mesin Vol 4, No 1 (2018)
Publisher : UNIVERSITAS IBN KHALDUN BOGOR

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Abstract

The flow of fluid through the pipe creates fluid friction with pipe walls causing pressure drop and fluid flow velocity affecting the use of energy to drain it. Pressure drop can be affected by several factors such as friction or friction factor, pipe length, pipe diameter and fluid velocity. In this research, it will analyze pressure drop on piping system based on friction, fluid flow characteristics, and fluid velocity. The analysis was done by using two methods, namely experimental method and empirical calculation method. The stages of this study consist of problem analysis, literature study, calibration, data retrieval, empirical data processing and experiments, validation, analysis of results and conclusions. Based on the results of empirical and experimental research, the lowest pressure drop in the experiment and empirical was the 12 LPM discharge copper pipe and the water coolant ratio is 0: 100. This means that the best material pipes used were copper pipes rather than steel and galvanized pipes. The results of the tests and experiments have been tested for validation. The validation value of empirical and experimental data measurement is 91%.
UJI PERFORMASI DISC BRAKE SEPEDA MOTOR MATERIAL KOMPOSIT MATRIKS ALUMINIUM BERPENGUAT PARTIKEL KERAMIK waluyo, roy; Rahmalina, Dwi
AME (Aplikasi Mekanika dan Energi): Jurnal Ilmiah Teknik Mesin Vol 3, No 1 (2017)
Publisher : UNIVERSITAS IBN KHALDUN BOGOR

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Abstract

Komposit matriks aluminium berpenguat partikel keramik banyak dikembangkan untuk aplikasi komponen otomotif. Keunggulan komposit matriks aluminium diantaranya mempunyai berat jenis rendah dibanding logam ferro serta memiliki performa yang baik seperti kekuatan tinggi, kekerasan tinggi, sifat tahan aus dan koefisien ekspansi panas rendah. Penelitian ini bertujuan mendapatkan performa, yaitu waktu berhenti saat pengereman pada kecepatan 40 km/jam dari disc brake dengan material komposit matriks (Al-3Si+1.2Cu) dan partikel penguat (SiC+Al2O3) serta mendapatkan gradien temperatur pada disc brake akibat proses pengereman melalui simulasi termal dengan metode Finite element analysis. Hasil pengujian menunjukan komposit matriks aluminium dengan Cu 1.2%wt. yang diberi perlakuan aging 180°C dengan holding time 6 jam memiliki waktu berhenti rata-rata 2,70, lebih cepat dibanding disc brake dari logam ferro yang memiliki waktu berhenti rata-rata sebesar 2,84. Hasil simulasi termal menunjukan terjadi gradien temperatur dari 30,2°C yang terjadi pada sepanjang brake lining pusat pengereman dan 29.9°C pada daerah mendekati titik pusat disc brake.
PERANCANGAN DIES POTONG DAN DIES TEKUK PADA PRESS BRAKE sutoyo, edi; Sutisna, Setya Permana
AME (Aplikasi Mekanika dan Energi): Jurnal Ilmiah Teknik Mesin Vol 2, No 2 (2016)
Publisher : UNIVERSITAS IBN KHALDUN BOGOR

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Abstract

Pembentukan material seperti pemotongan dan tekuk dapat dilakukan dengan dies. Dies potong adalah pemotongan dengan cara dipotong melalui dua logam yang disebut striper. Dies tekuk adalah proses pembentukan dengan cara ditekuk melalui perkakas punch. Penekukan dengan dies memungkinkan hasil yang sama dapat dipertahankan. Konstruksi dies terdiri dari striper, pelat tumpuan,poros penghantar, sambungan baut dan las. Bahan striper AISI 1050, bahan baut A325.Bahan baut plat yang di potong atau di tekuk adalah JIS G3101. Penelitian ini bertujuan untuk memperoleh konstruksi dies dan gaya yang dibutuhkan untuk memotong dan menekuk. Pengujian dilakukan dengan nyata dan software sebagai alat untuk memvalidasi hasil dari perhitungan. Hasil kekuatan dies potong mendapatkan nilai 301x106 N/m2 dan tegangan dies tekuk mendapatkan nilai 30x106 N/m2 jika dilihat dari validasi menggunakan software perhitungan nilai kekuatan dies potong dan dies tekuk tegangan hampir mendekati. Tegangan geser baut yang terjadi sebesar 49x106 N/m2 tegangan yang terjadi lebih kecil dari tegangan yang diijinkan maka baut aman. Dari perhitungan sambungan las didapat tegangan geser 84,5 N/m2 dan tegangan tarik 142.4 N/m2, tegangan yang terjadi pada kampuh las lebih kecil yang diijinkankan maka pengelasan aman. Dari perhitungan untuk mendapat gaya potong dengan panjang 100 mm dengan tebal 3 mm mendapatkan gaya sebesar 8.4000 N sedangkan hasil pengujian pemotongan sebesar 83.006 N Sedangkan perhitungan yang dilakukan untuk mendapat gaya tekuk dengan panjang 100 mm dengan tebal 3 mm mendapatkan gaya sebesar 7.980 N sedangkan hasil pengujian hasil sebesar 83.00 N.
DESIGN OPTIMIZATION AND EXPERIMENTAL DATA OF LOW ENTHALPY GEOTHERMAL POWER PLANT DESIGN BY USING ORGANIC RANKINE CYCLE Gaos, Yogi Sirodz; Wicaksono, Muhammad Faisal; Rodiah, Iis
AME (Aplikasi Mekanika dan Energi): Jurnal Ilmiah Teknik Mesin Vol 2, No 1 (2016)
Publisher : UNIVERSITAS IBN KHALDUN BOGOR

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Abstract

A lot of heat energy can be tap to produce electricity by converting the heat and enthalpy to move a steam turbine cycle, or usually known as Rankine Cycle. But steam cycle has to have a high temperature and high enthalpy, so lower temperature and lower enthalpy source such as geothermal brine water, solar thermal, and waste heat gas cannot be tap to produce electricity. These potential belongs to ORC or Organic Rankine Cycle. ORC has no need to utilized high temperature and enthalpy, it can use temperature as low as 80ºC instead of 170ºC or more. By utilizing ORC system, these sources is open to produce electricity. These days a lot of research for ORC is done either by simulation or by experiment and the source is also varied. For this case, the source is geothermal brine water. The design of ORC begins with calculating the overall ORC heat balance using Cycle Tempo. Thus the duty of preheater, evaporator, turbine, condenser, pump, and cooling tower can be obtained. Then using working fluid n-pentane, we calculate and optimized the thermal efficiency. After that, every individual equipment is designed and calculated by using HTRI. Design optimization which had been obtained then used as reference to do the experiment. Unfortunately, the data from the latest experiment showed that the temperature from the geothermal brine water has not met requirement yet. Therefore, further experiment has to be done with some improvement to the system.
PERANCANGAN STRUKTUR RANGKA LENGAN ROBOT MEKANIK PEMINDAH BAHAN TIPE CARTESIAN COORDINATE Prayuda, Ilham Vega; Hartono, Budi; Sutoyo, Edi
AME (Aplikasi Mekanika dan Energi): Jurnal Ilmiah Teknik Mesin Vol 4, No 1 (2018)
Publisher : UNIVERSITAS IBN KHALDUN BOGOR

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Abstract

This study describes the design of skeletal structure of mechanical robot arm of cartesian coordinate material type with area of 60 x 50 cm using 2 main axis that is X axis and Y axis. This study aims to determine the movement system, frame construction, welded joints. Based on the design results, the driving force using the stepper motor OMHT17-275 for the driving force on the X axis that has a torque of 0.249 Nm, stepper motor OM5014-075 for the motor on Y axis which has a torque of 0.235 Nm. The stresses occurring in the lead screw are the compressive stress of 3.9 MPa, the bending stress of 0.028 MPa, and the shear stress of 3.3 MPa. The amount of stress that occurs in the lead screw is still below the yield strength of the material, so the lead screw is quite safe. Analyze on linear rod Y axis with S45C material get load 51,993 N caused stress 0,00245 MPa < material stres permit 29,419 MPa, and deflection 0,052 mm < software simulation result 0,072 mm, so material is considered safe. Analysis on linear rod X-axis with S45C material got 14,715 N caused stress 0.000721 MPa < material stres permit 29,419 MPa, and curve or buckling force on Y axis was 10,322 kg. The stress value that occurs < the stress of the material permit, therefore the design able to withstand the load occur. From the calculation of the tensile stress of 1.83 MPa < welding stress allowable 53.75 MPa, so the welding is considered safe. The shear stress value that occurs at 1.83 MPa < stress allowable 47.37 MPa, so the welding is considered safe.
Retrofit Motor Stepper Mesin CNC 3 Axis UIKA Prototype 3 Pramono, M.T., Gatot Eka; Supriatma, Etim; Permana Sutisna, Setya
AME (Aplikasi Mekanika dan Energi): Jurnal Ilmiah Teknik Mesin Vol 3, No 2 (2017)
Publisher : UNIVERSITAS IBN KHALDUN BOGOR

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Abstract

Retrofit motor stepper mesin CNC 3 axis prototype 3 bertujuan untuk optimalisasikan mesin CNC yang ada di UIKA yang awalnya hanya dipakai untuk benda kerja dari kayu, karena pada eretan sumbu x, y dan z apabiladipakai benda kerja dari aluminium tidak mampu untuk memotong benda kerja tersebut. Sehingga saya ingin mengoptimalisasikan mesin CNC dengan cara mengganti motor stepper pada sumbu x, y, dan z, ke torsi yang lebihbesar, data motor stepper lama yaitu holding torque motor 1,1 Nm, torsi 3 Nm dan tekanan geser pada eretan, sedangkan untuk shear strength bahan alumunium untuk benda kerja type AA7075 adalah 150 MPa, sedangkan untuk tingkat kekerasan kayu adalah >65 MPa, jadi dapat disimpulkan dengan motoryang lama hanya bisa digunakan untuk benda kerja dari bahan kayu, dan diganti dengan motor stepper yang baru dengan yaitu holding torque 2,3 Nm, torsi motor 6,09 Nm dan tekanan geser pada eretan shear strength bahan alumunium type AA7075 adalah 150 MPa, dapat disimpulkan motor stepper baru bisa memotong bahan aluminium terbukti bahwa hasil perhitungan tekanan geser motor padaeretan yaitu 229,8 N/mm2 > shear strength bahan aluminium (150 MPa).
STUDI EKSPERIMENTAL PENDINGIN PASIF LAMPU LIGHT EMITTING DIODE UNTUK APLIKASI FOTOGRAFI Sumantri, Yudi; Pramono, Gatot Eka; ., Nurrohman
AME (Aplikasi Mekanika dan Energi): Jurnal Ilmiah Teknik Mesin Vol 3, No 1 (2017)
Publisher : UNIVERSITAS IBN KHALDUN BOGOR

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Abstract

Energy is all around us in a very clear shape and utilization. Along with the changing times, the energy is being intensively investigated with the intention to do enhancement to optimize an effective and efficient energy source. Light Emiting Diode (LED), which is one of the electronic component, is not foreign in human life. LEDs are now widely used, such as in childrens toys, traffic signs, the indicator light for the electronic equipment industry as well as photography. SMD 3528 LED strip light is a type of LED that is most widely used today. In addition to its relatively small dimensions is also due to the low electrical power consumption. In the world of photography, lighting sources is absolute existence. This study was conducted to determine the characteristics of LED Strip lights SMD 3528 with passive cooling for photographic purposes. From the experimental results, it was obtained the greater input power of is given, the value of the points that were tested was greater. Among other things, LED temperature, the temperature of the middle heat sink, the heat-sink and the outside air (ambient) and the resulting brightness. Material and cross-sectional area and shape of the heat sink greatly affected the absorption and release of heat that occurs on passive cooling.
THE INFLUENCE OF FROTHER IN FLOTATION USING ELECTROLYSIS FOR BATIK DYEING WASTE SEPARATION ., Nurrohman; ., Warjito
AME (Aplikasi Mekanika dan Energi): Jurnal Ilmiah Teknik Mesin Vol 2, No 1 (2016)
Publisher : UNIVERSITAS IBN KHALDUN BOGOR

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Abstract

Batik waste can increase water characteristics such as turbidity, color and Total Suspended Solid (TSS). A technique for separating Batik from the liquid so that its turbidity, color and TSS decrease is needed. Flotation studies have been conducted using electrolysis to produce the bubbles to separate waste synthetic dye staining result of Batik from the bulk liquid. Research carried out by electrolysis with 316L stainless steel electrodes, inside an acrylic pipe with a height of 100 cm, and 8,4 cm in diameter with a voltage 15 V. Solid aluminum sulfate as a reagent was added to coagulate Batik waste as much as 1 gram per 10 ml of Batik waste. Batik waste was mixed with distilled water beforehand. Frother used was pure ethanol as much as 0.1% v/v. From the research it was discovered that flotation of Batik waste can be used for Batik waste separation with the addition of alum. Alum was proved capable of acting as collector in this type of waste separation. Ethanol as frother used was proved capable of making stable froth and increases the separation efficiency.
ANALISA GETARAN BEARING BERBASIS VARIASI JARAK PENYANGGA PADA ALAT UJI PUTARAN KRITIS Zaki, Abdul; Hartono, Budi; Sutoyo, Edi
AME (Aplikasi Mekanika dan Energi): Jurnal Ilmiah Teknik Mesin Vol 4, No 1 (2018)
Publisher : UNIVERSITAS IBN KHALDUN BOGOR

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Abstract

This study focused on variation of buffer distance as well as different shaft materials and 3 loading of test specimens. Obtained from the test results on the aluminum shaft at a buffer distance of 60 cm the largest vibration value occurs on the x axis of 17.8 mm/s and the largest deflection occurs at 0.45 m with a weight of 0.135 kg is 0.044 m. Experiment using a buffer distance of 80 cm the largest vibration value occurs on the z axis of 12.6 mm / s and the largest deflection value occurs at 0.6 m with a weight of 0.135 kg is 0.046 m. Experiment using a buffer distance of 100 cm the largest vibration value occurs on the z axis of 14.9 mm/s and the largest deflection occurs at a distance of 0.75 m with a weight of 0.135 kg is 0.088 m. Tests on the stainless steel axle at a buffer distance of 60 cm the largest vibration value occurs on the z axis of 24.1 mm/s and the largest deflection value occurs at a distance of 0.45 m with a weight of 0.135 kg is 0.0037 m. Test uasing a buffer distance of 80 cm the largest vibration value occurs on the x axis of 22.6 mm/s and the largest deflection value occurs at a distance of 0.6 m with a weight of 0.011 kg is 0.046 m. Pada jarak penyangga 100 cm nilai getaran terbesar terjadi pada sumbu z yaitu 14,2 mm/s dan nilai defleksi terbesar terjadi pada jarak 0,75 dengan berat 0,135 yaitu 0,057 m. Testing on the copper shaft at a buffer distance of 60 cm the largest vibration value occurs on the x axis of 20 mm/s and the largest deflection value occurs at a distance of 0.45 m with a weight of 0.135 kg is 0.0032 m. Experiment using a buffer distance of 80 cm the largest vibration value occurs on the x axis of 15 mm/s and the largest deflection value occurs at a distance of 0.6 m with a weight of 0.135 kg is 0.017 m. Test using a buffer distance of 100 cm the largest vibration value occurs on the x axis of 12 mm/s and the largest deflection value occurs at a distance of 0.75 m with a weight of 0.135 kg is 0.119 m.
REVERSE ENGINEERING OIL COOLER DOUBLE TUBE PLTA JATILUHUR Gaos, Yogi Sirodz; Damis Widiawati, Candra
AME (Aplikasi Mekanika dan Energi): Jurnal Ilmiah Teknik Mesin Vol 3, No 1 (2017)
Publisher : UNIVERSITAS IBN KHALDUN BOGOR

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Abstract

Double tube heat exchanger is one of the modifications of shell and tube, which use as transformer cooler in power plant system AT PLTA Jatiluhur, Purwakarta, Jawa Barat. It has double tube, the outer contacts with the oil and the inside one contacts with water as cooling medium. One of the benefits of this type can reduce explosion risk of the transformer, because the warning system will be on when there is leakage at inside tube, so water and oil will not mix. But this type needs cost more expensive than the single one. ,Design optimization was using reverse engineering. The dimensions are 339.6 mm inner shell diameter, outer tube dimension 15mmOD, 1mmThickness, 2208mmLength, inside tube dimension 13mmOD, 1.2mmThickness, 2208mmLength, and 124 pcs in each. The performance tests of the reverse engineering at 23.23 MW were; 27.4oC/31oC water in/out, 41.5oC/38.8oC oil in/out, oil flow rate 2.92 kg/s, 10.94oC log mean temperature difference, and temperature work of transformer 41.1oC. Using reverse engineering the work temperature of transformer at 28 MW was 60oC when using original equipment the work temperature of transformer at 26 MW was 80oC. Design of reverse engineering increased cooling capacity 16% and only 71.43% from OEM.

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