Pramono, Gatot Eka
UNIVERSITAS IBN KHALDUN BOGOR

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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.
ANALISA DAYA DAN KONTROL KECEPATAN MOTOR PADA ALAT BANTU LAS ROTARY POSITIONER TABLE Saptono, Hery; Pramono, Gatot Eka; Khindi, Hablinur Al
AME (Aplikasi Mekanika dan Energi): Jurnal Ilmiah Teknik Mesin Vol 4, No 1 (2018)
Publisher : UNIVERSITAS IBN KHALDUN BOGOR

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Abstract

Rotary Positioner Table is one of the welding aids that are widely used industrial world especially welding with the intention of facilitating welder to work on certain products. As the name implies Positioner which means positioning where the tool in this design can position the welding object freely according to the correct position and comfortable for people who are doing welding. This tool can be applied to drill the hole circle the same distance on the flange, to cut the round pieces , for welding pipes, welding shafts, discs, truck rims, etc.The selection of motor types and speed control becomes very important to support the performance of this tool which is expected to be used for welding with a maximum work load of 100 kg with vertical welding position. For that matter proper analysis is needed to determine the motor power and rotation speed of the turntable in order to get the best welding results. The way this Positioner tool works mechanically by rotating the rotary axis (lever) that has been made, to adjust the angle manually. This positioner can move on the X, Y, and Z axes.
PERBANDINGAN KARAKTERISTIK SERAT KARBON ANTARA METODE MANUAL LAY-UP DAN VACUUM INFUSION DENGAN PENGGUNAAN FRAKSI BERAT SERAT 60% Pramono, Gatot Eka; Sutisna, Setya Permana
AME (Aplikasi Mekanika dan Energi): Jurnal Ilmiah Teknik Mesin Vol 3, No 1 (2017)
Publisher : UNIVERSITAS IBN KHALDUN BOGOR

Show Abstract | Original Source | Check in Google Scholar | Full PDF (440.812 KB)

Abstract

Penelitian ini dilakukan untuk menentukan perbedaan karakteristik material komposit serat karbon dengan dua metode laminasi antara manual lay-up dan vacuum infusion. Penelitian terbagi dalam beberapa tahapan. Tahap pertama pembuatan specimen komposit dengan fraksi berat serat 60% dengan lapisan serat sebanyak 10 layer untuk uji tarik dan 40 layer untuk uji impak. Matriks yang digunakan yaitu resin epoksi. Tahap kedua adalah pengujian bajan komposit. Pengujian yang dilakukan yaitu uji tarik dan uji impak. Uji tarik dilakukan dengan menggunakan standar ASTM D3039 dan uji impak menggunakan standar ASTM 6110. Tahap terakhir yaitu hasil Analisa data dan pembahasan. Hasil pengujian kekuatan tarik komposit dengan metode vacuum infusion memiliki kekuatan tarik dan harga impak paling baik dengan kekuatan tarik sebesar 595.63 MPa dan modulus elastisitas sebesar 6976 MPa sedangkan energi yang diserap 2433.65 J dengan harga impaknya 33.25 J/cm2. Pengujian pada specimen metode manual lay-up memiliki kekuatan tarik sebesar 581.93 MPa dan modulus elastisitas sebesar 10.241 MPa sedangkan energi yang diserap 2212.59 J dengan harga impak 29.41 J/cm2. Berdasarkan hasil tersebut dapat dikatakan metode vacuum infusion memiliki karakteristik yang lebih baik dibandingkan metode manual lay-up.