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Jurnal Teknologi Terapan
Published by Politeknik Negeri Indramayu
ISSN : 24773506     EISSN : 25491938     DOI : -
Core Subject : Science, Engineering,
Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Engineering Mechanical Engineering
JTT memuat naskah hasil-hasil penelitian di bidang teknologi terapan.
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 292 Documents
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RANCANG BANGUN MESIN PENCUCI UMBI PORANG UNTUK MENINGKATKAN KINERJA PENGOLAHAN PORANG Suharto, Suharto; Suryanto, Suryanto; Sarana, Sarana; Santosa, Teguh Budi
Jurnal Teknologi Terapan Vol 4, No 2 (2018): Jurnal Teknologi Terapan
Publisher : P3M Politeknik Negeri Indramayu

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (412.854 KB) | DOI: 10.31884/jtt.v4i2.148

Abstract

Porang  (Amorphophallus Oncophyllus) has long been known to the public, especially in the Magelang region. Porang contain very high glucomannan. Glucomannan is a water soluble fiber that is strong and low caloric hydrocolloid which is widely used food industry (noodle, tofu / konyaku, meatball, jely, artificial rice) and non food (cosmetics, capsules). Semarang State Polytechnic Hi-link Program in cooperation with the Magelang City Agriculture Office covers the cultivation, processing, and utilization of porang. Processing starts from tuber harvest, washed, chopped, dried, dipped. The washing process was initially done manually and simply with a brush and water spray so that the laundry was less clean and long-time. The purpose of this research is to design a porang bulb washer with motor gasoline drive to improve clean washing result and number of porang bulbs. The method used approach with of R & D (research & development) is to describe the current condition (exsiting), analyzing deficiencies, and improve performance for the better. Design stage starts from designing, manufacturing, and performance testing. The results obtained were porang washing machine driven by gasoline engine with power 10 HP, length dimension 1800 (mm), width 1200 (mm), and height 1200 (mm). The result of clean washing test with brush length 35 (cm), rotation of rotor 50 (rpm) and washing capacity of porang 1400 (kg / hour). The capacity of washing porang  1400 (kg / hour) is greater than washing manually, and the washing results are clean than more.
Rancang Bangun Vibration Test Bench untuk Mensimulasikan Kondisi Unbalance dengan Pengaturan Putaran dan Beban Unbalance Maolana, Imam
Jurnal Teknologi Terapan Vol 3, No 1 (2017): Jurnal Teknologi Terapan
Publisher : P3M Politeknik Negeri Indramayu

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1137.358 KB) | DOI: 10.31884/jtt.v3i1.5

Abstract

The goal of this work is to design and build a vibration test bench to simulate unbalance in rotating machine. The vibration test bench made of a 25 mm diameter steel shaft and length of 410 mm supported by two ball bearings. Two steel discs to variate unbalance load installed in the shaft powered by 0.5 Hp electric motor with maximum rotation of 1400 RPM. Inverter used to control rotation from electric motor. Vibration testing conducted at two condition; (1) without load and rotation variation, (2) unbalance load with variation of unbalance mass. Pick up point of vibration measurement at bearing house in radial and axial direction. The vibration parameter measured are amplitude and spectrum (wave form). Amplitude measurement using hand held vibrometer, while spectrum using accelerometer conected to a Data Acquisition. After testing the condition using unbalance load, we conclude that the vibration test bench match unbalance condition as described in theory which is high amplitude at machine frequency, and it’s value proportional to unbalance mass. We find that the highest amplitude is at horizontal direction where machine stiffnes is smallest. Vibration testing with no load condition show that there is harmonic in vibration spectrum indicating rotating looseness, probably caused by bearing wear. 
Analisis Fabrikasi Desain Passive Mixing Microchannel Perangkat Mikrofluidik Material Acrylic Dengan Laser CO2 Daya Rendah Badruzzaman, Badruzzaman; Sunar Baskoro, Ario
Jurnal Teknologi Terapan Vol 2, No 2 (2016): Jurnal Teknologi Terapan
Publisher : P3M Politeknik Negeri Indramayu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31884/jtt.v2i2.20

Abstract

Microfluidics devices have been applied in the biomedical field to manipulate the tissue fluids in channels with dimensions between 5-500 lm. Microfluidics device manufactured by a microfabrication process consisting of design, microstucturing and back-end processes. One application of microfluidics is a passive mixing microchannel. In this device, the liquid will flow through the channel without any moving parts and the pressure from the outside to produce a fluid mixing. It is important to design the shape of the channel to generate a nice passive mixing microchannel. Low power CO2 laser is used to process microstucturing as cutting tools to produce microfluidic devices on acyilic material. Surface roughness lines were designed to be observed. In this study, the design process channel carried by the experimental method through the parameters that affect the output of the process is the power of laser cutting, cutting speed and design channel. And then the fabrication of microfluidics with back-end processing is done by the process of merging with a thermal bonding method. Finally, From the experimental results, the design of the channel 1 has an influence on all the parameters for surface roughness compared with a channel design 2.
Studi Eksperimental Pengaruh Sumber Kalor Terhadap Distribusi Temperatur dan Temperatur Pendidihan pada Tapering Heat Pipe Sarip, Sarip; Sudjito, Sudjito; Yuliati, Lilis; Agus Choiron, Moch.
Jurnal Teknologi Terapan Vol 2, No 2 (2016): Jurnal Teknologi Terapan
Publisher : P3M Politeknik Negeri Indramayu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31884/jtt.v2i2.18

Abstract

Heat source of the heat energy can affected of the temperature distribution and the boiling temperature of the tapering heat pipe located on the evaporator. The purpose of this study was conducted to determine the effect of heat source on the temperature distribution and boiling temperature that occur in the tapering heat pipe. In this study, used heat pipe tapered shape of the copper pipe diameter of 10 mm and 20 mm as evaporator as condenser with a length of 200 mm. Tapering heat pipe inside there is a wick mesh screen serves as the axis of the capillary to the return liquid / backflow of fluid from the condenser to the evaporator. The condenser ends mounted a valve to inject the working fluid into the tapering heat pipe. K-type thermocouple is integrated with NI-9211 module and c-DAQ 9271 to measure the temperature distribution along the tapering heat pipe with a heat source of DC power supply for (25, 30, 35, 40, 45, 50) Watt. The results showed that there was a difference of temperature distribution and boiling temperature caused by the variations heat source. Temperature of distribution and boiling temperature which tends to increase in value the greater the heat source, so it can be concluded that the heat source has an influence on the temperature distribution and the boiling temperature of the tapering heat pipe with 50 Watt heat source generates temperature distribution and boiling temperature stable.
Perancangan Kontrol Multivariabel Sistem Pengaduk Pemurnian Uranium Karsid, Karsid; Aziz, Rofan
Jurnal Teknologi Terapan Vol 2, No 1 (2016): Jurnal Teknologi Terapan
Publisher : P3M Politeknik Negeri Indramayu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31884/jtt.v2i1.23

Abstract

Stirrer system has analyzed the homogeneity of Uranium Penurnian Installation unit which serves to change the yellow cake (natural uranium) into uranium UO2 powder. in this system of natural uranium in the form of effluent UO2 (NO3)2 maintained homogeneity, with a surface elevation level fixed tank. Uranium purification system involves two (2) tanks interplay output, so the output is obtained in accordance with the sett-point value, then the system needs to be in decoupling. Then the control system is applied to the height of the tank using decouling Level control with shift method eigenvalues.
Mikrofabrikasi Jalur PCB Menggunakan Metode Visible Ligth Maskless Photolitography Suwandi, Dedi; Badruzzaman, Badruzzaman; Istiyanto, Jos
Jurnal Teknologi Terapan Vol 1, No 1 (2015): Jurnal Teknologi Terapan
Publisher : P3M Politeknik Negeri Indramayu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31884/jtt.v1i1.28

Abstract

Pada tulisan ini akan dibahas metode modifikasi dari Photolitography yaitu Visible Ligth Maskless Photolitography, perbedaannya menggunakan sinar tampak (visible light) dan tanpa mask (cetakan) selanjutnya diaplikasikan pada fabrikasi jalur listrik PCB (printed circuit board). [DI1]Kelebihan metode adalah mudah, murah tetapi mampu membuat profil rumit dan aman. Cara kerjanya model/ profil dibuat di komputer/ laptop kemudian dipancarkan melalui DLP projector. Pada bagian bawah projector dipasang PCB yang sudah dilapisi Negative Photoresist sehingga terjadi proses exposure. Selanjutnya dilakukan proses developing dan eching sehingga terbentuk profil sesuai desain. Pada jenis projector Infocus IN114A ditemukan parameter terbaik: posisi lensa pemfokus pembesaran 3X berjarak 3 cm dibawah DLP projektor dan 14 cm diatas material uji PCB, menggunakan kombinasi warna hitam (R:0 G:0 B:0) dan biru terang (R=0, G=176, B=240) dengan waktu prebake 2 menit, spin 2.000 rpm, exposure 3 menit, developing 5 menit, Postbake 5 menit dan Eching 5 menit. Profil jalur listrik yang berhasil dibuat diantaranya: garis, huruf, alur listrik, dan bentuk microcontroller. Hasil pengukuran Scanning Electron Microscope (SEM) profil garis terkecil yang dapat dibuat yaitu m132 m dan memiliki kekasaran tepi (deviasi) 6,6 m.
Analisa Kegagalan pada Produk Replacable Lip dan Pengaruh Deoksidasi Aluminium pada Baja Cor Tahan Panas SCH22 Sambas, Achmad
Jurnal Teknologi Terapan Vol 1, No 1 (2015): Jurnal Teknologi Terapan
Publisher : P3M Politeknik Negeri Indramayu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31884/jtt.v1i1.31

Abstract

Replaceable Lip merupakan salah satu komponen habis pakai dengan material Baja Cor Tahan Panas Stainless Steel (Heat Resistant Stainless Steel Casting ) SCH 22. Produk tersebut dibuat di Polman khususnya di Jurusan Teknik Pengecoran Logam, namun masih ada kendala dalam proses pembuatannya. Masalah yang terjadi pada Replaceable lip ini adalah adanya cacat coran berupa porositas atau inklusi dibawah permukaan tuangan. Cacat tersebut dapat diketahui dari permukaan luarnya setelah dilakukan proses permesinan. Umumnya, porositas dalam produk coran disebabkan oleh gas yang terjebak atau akibat dari penyusutan cairan ketika membeku. Selama ini porositas dicegah dengan proses degassing konvensional dengan Aluminium, tetapi belum memberikan hasil yang optimal. Penelitian ini bertujuan untuk menganalisa dan mengatasi kegagalan/ cacat cor yang terjadi pada produk cor Replaceable lip serta mengembangkan material Baja Cor Tahan Panas SCH22 terhadap kualitas produk yang bebas porositas. Manfaat dari penelitian yaitu tercapainya optimalisasi proses degasing dalam penyelesaian masalah cacat, dan prototip produk yang dapat digunakan secara langsung bagi industri pengguna. Metode yang akan dilakukan yaitu dengan membuat spesimen berupa sampel uji dan sampel produk dengan proses pengecoran logam, kontrol parameter proses metalurgi dengan variasi degasing Al dari 0,1% sd 0,4%, dan Temperatur cor yang tetap sekitar 1450 sd 1550oC. Dari kedua sampel dilakukan pengamatan terhadap porositas, kekuatan mekanik dan struktur mikro, untuk melihat pengaruh dari degasing Aluminium.
ANALISIS CAMPURAN SERAT PELEPAH TANGKAI PISANG KEPOK DENGAN RESIN KATALIS TERHADAP KEKUATAN TARIK Rahbini, Rahbini; Soemardi, Heryanto Budiono; Sarjiyana, Sarjiyana
Jurnal Teknologi Terapan Vol 3, No 2 (2017): Jurnal Teknologi Terapan
Publisher : P3M Politeknik Negeri Indramayu

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (538.69 KB) | DOI: 10.31884/jtt.v3i2.57

Abstract

The strength of material is a parameter to show mechanical material characteristic, which is determined based on the endurance of supporting external force. In materials science, it is know as the various meanings of strength based on how far external force causes the impact on the material. Resin material is a polymer produced by chemical industry and is used in various applications, among other are packing, textile (example: rope, thermal clothing, and carpet), while banana stalk which contain water has not been used in engineering. The mixture of banana stalk fiber with catalyst resin is called composite. Composite is a solid material produced by the combination between two or more diffrent materials to obtain better characteristic which cannot be obtained from every component.Testing method of composite is done by being pressed with long , thick, wide size based on the standard. The up and down part of the material is clamped and then the testing instrument pulls the tested object so that can show maximum pulling power of 10.2 x 105 kg/m2 with a speed of 100 mm/minute.
EVALUASI INSTALASI PLUMBING AIR BERSIH RUMAH TIPE 42 MENGGUNAKAN PIPE FLOW EXPERT BERDASARKAN SNI 03-7065-2005 DAN BS 6700 Mahardhika, Pekik
Jurnal Teknologi Terapan Vol 4, No 1 (2018): Jurnal Teknologi Terapan
Publisher : P3M Politeknik Negeri Indramayu

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (786.053 KB) | DOI: 10.31884/jtt.v4i1.68

Abstract

Sistem plumbing adalah sistem perpipaan yang berhubungan dengan perancangan dan instalasi penyaluran air dalam suatu bangunan rumah, gedung, dan lain-lain. Saat ini kebutuhan instalasi plumbing berkembang pesat seiring permintaan pembangunan perumahan yang signifikan. Sistem plumbing air bersih bertujuan menyediakan penyaluran air bersih untuk kebutuhan pemakai rumah tipe 42 di Perumahan Kartika Chandra Sidoarjo. Permasalahan yang sering terjadi dalam sistem plumbing adalah tidak diketahuinya tekanan, laju aliran, kecepatan aliran, dan kerugian head-head pada pipa sehingga distribusi air disetiap cabang pipa belum tentu sesuai persyaratan SNI 03-7065-2005 dan BS 6700. Oleh karena itu perlu mengevaluasi instalasi sistem plumbing air bersih terhadap persyaratan SNI 03-7065-2005 dan BS 6700. Parameter utama meliputi kebutuhan air bersih, tekanan, laju aliran, kecepatan aliran, dan tipe aliran. Hasil evaluasi menunjukkan bahwa laju aliran belum memenuhi persyaratan SNI 03-7065-2005 dan BS 6700, tekanan pada node 14 dan 30 yang memenuhi persyaratan SNI 03-7065-2005 dan BS 6700, hanya kecepatan aliran yang memenuhi persyaratan SNI 03-7065-2005, dan tipe aliran dalam pipa jenis turbulen.
Comparison Study of Analysis of Water Tower Structure Using Finite Element Method and Engineering Equation Solver Qosim, Nanang; Pamungkas, Putra M; Fitriyana, Barkah; Pratomo, Wanda; Lassandy, Marthan
Jurnal Teknologi Terapan Vol 4, No 1 (2018): Jurnal Teknologi Terapan
Publisher : P3M Politeknik Negeri Indramayu

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1368.274 KB) | DOI: 10.31884/jtt.v4i1.81

Abstract

This study aims to compare the analysis results of the maximum deformation and maximum stress on water structure using finite element method and engineering equation solver (EES). Simulation results show that verification successfully performed, with deformation value obtained is convergent to certain value with maximum percentage of 0,40%. Further, the maksimum stress value is still under the allowable stress of material 160 MPa. Hence, the structure of water tower with a capacity of 500 liters is safe to use. The result of calculation using EES shows that the deformation value is 1.70 mm. This value is different about 0.31 or 18.24% compared to the deformation value of 2.01 mm using fine meshing on ANSYS.

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