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INDONESIA
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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KARAKTERISASI KECEPATAN PUTARAN BERDASARKAN RASIO INPUT BAHAN BAKAR PADA GENERATOR SET DUAL FUEL (GASOLINE – BIOGAS) MENGGUNAKAN JARINGAN SYARAF TIRUAN Arief Abdurrakhman; Dhirga Kurniawan; Mohammad Berel Toriki; Bambang Lelono Widjiantoro
Jurnal Teknologi Terapan Vol 6, No 1 (2020): Jurnal Teknologi Terapan
Publisher : P3M Politeknik Negeri Indramayu

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (527.353 KB) | DOI: 10.31884/jtt.v6i1.238

Abstract

Currently, energy consumption in Indonesia has increased so that the utilization of renewable energy is more developed to supply projections for future energy needs. One of the renewable energy sources that is being developed is biogas, especially for household-scale biogas. There are several types of biogas implementation at the household scale, one of which is the use of biogas as generator fuel to produce electricity. Fuel generators can use biogas in full or mix gasoline with biogas fuel. Electric generator sets with dual gasoline-biogas fuel can save the use of gasoline as fuel and can also increase the performance of generators. The gasoline-biogas mixture ratio affects engine performance, one of which is the rotational speed. However, at present the ratio of gasoline to biogas is still manually regulated on household scale biogas usage. Based on these conditions, the artificial neural networks(ANN) method was developed in this study which aims to find the optimal ratio in order to get the generator set rotational speed characterization with the best engine performance value. A total of 300 variations of data were processed using 75% for training with the number of hidden nodes 100 net.trainParam.goal value = 0.0001, net.trainParam.lr = 0.01, and net.trainParam.epochs = 1000, and 25% for the test. This study produced a RMSE training value of 10.4812 at node 55 and a test RMSE value of 5.8301 with a rotational speed of 3445.87, and obtained the best ratio of 0.012 L / min gasoline and 5 L / min biogas.
KAJI EKSPERIMENTAL DEHUMIDIFIER PORTABLE BERBASIS TERMOELEKTRIK DENGAN VARIASI ARUS LISTRIK MASUKAN Yudhy Kurniawan; Aa Setiawan
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 | Full PDF (918.764 KB) | DOI: 10.31884/jtt.v1i1.32

Abstract

Sebuah prototipe didesain untuk mendinginkan dan kemudian sekaligus mengeringkan atau disebut dehumidifier. Alat ini menggunakan termoelektrik sebagai komponen utama dalam dehumidifikasi. Hal ini mengingat alatnya relatif murah dengan daya yang kecil, portable, dan ramah lingkungan karena tanpa menggunakan refrigeran sebagai fluida kerja. Penelitian ini dibuat atas dasar permasalahan gudang penyimpan benih sayuran, dimana kelembaban belum dapat dikontrol dengan baik. Pengontrolan kelembaban sangat berpengaruh dalam memperpanjang umur tumbuh benih, sehingga para petani dapat menyimpan benihnya dalam waktu lama. Untuk benih sayuran dibutuhkan keadaan ruangan yang relatif dingin sekitar 20 oC dan kelembaban relatif (RH) berkisar 45% - 50%. Umumnya peralatan menggunakan refrigeran atau desiccant untuk proses dehumidifikasi penyimpan benih, sedangkan penggunaan termoelektrik belum pernah diaplikasikan pada gudang penyimpan benih sayuran.Alat ini bekerja dengan 2 tahap. Dimana udara lingkungan masuk melalui tahap 1 yang merupakan proses pendinginan yang disebarkan oleh heat sink dari pendinginan Peltier sehingga terjadi penurunan temperatur kemudian dengan adanya plat pengarah udara dingin dialirkan menuju tahap 2 yang merupakan proses pemanasan (kebalikan efek Peltier) dimana pada tahap ini udara dingin dikeringkan melalui heat sink sehingga terjadi penurunan kelembaban. Mengalirnya udara kering keluar system dibantu oleh fan axial. Dari kinerja system ini diharapkan terjadi proses dehumidifikasi yang diharapkan.
PENGARUH CAIRAN ALUMINIZING TERHADAP KEKERASAN KAWAT BAJA Dwi Putranto N; Dody Prayitno
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 (480.686 KB) | DOI: 10.31884/jtt.v3i2.56

Abstract

Wire rope is made from several steel  wires a combined form a strand, a couple of strands twisted around the core to form a steel rope. One example of its usage is on the bridge to provide support for a heavy load. The steel wire is composed of several parts that is, steel wire, core and wire strand. Increasing the hardness of steel wire have the impact, the hardness of the steel wire. In an effort to improve the hardness of steel wire, there are opportunities to increase the hardness of steel wire with aluminizing method. The aim of this research is to find out the hardness of Wire in aluminizing process with alloys Al - Cu - Sn. Moreover to the research also aims to focus on the addition of Sn element in Al - Cu liquid. The methodology research was preceded by spliting wires from the wire rope. After that cut the wire into the sample wire. Then soak the wire into Al - Cu – Sn liquid at a temperature of 700ºC for ± 3 minutes. Elements of Sn which contained in the composition of Al - Cu - Sn vary from 0 % , 10 % and 20 % , while for CU’s component is 10 % and the rest of is Al, and the latter only elements of Al - Sn, without adding Cu element. Wire samples were then take away and cooled at room temperature, then test the wire by using micro hardness test, the test data was analyzed with Anova and finally made a conclusion. The results of this of this research showed that for the violence that occurs in the intermetallic layer shows the increase in value of hardness obtained on steel wire.
APLIKASI NON DESTRUCTIVE TEST PENETRANT TESTING (NDT-PT) UNTUK ANALISIS HASIL PENGELASAN SMAW 3G BUTT JOINT Tito Endramawan; Emin Haris; Felix Dionisius; Yuliana Prinka
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 (1062.742 KB) | DOI: 10.31884/jtt.v3i2.61

Abstract

The purpose of the research are determine acceptance criteria the specimen based on ASME standard. The research used mild steel materials with hardness 220 HVN with sized 30 cm x 20 cm x 1.2 cm then  SMAW welding process position of 3G buttjoint with rooting electrode LB 52U diameter 2.6 mm used current 70 Amper and voltage 380 volt, for Filler used LB 5218 electrode 3.2 mm with current of 80 Amper and voltage of 380 volts. The welding process influenced by many factor which cause failure. The method for inspect result of weld used Non Destructive Test Penetrant Testing (NDT PT) and used ASME standard for acceptance criteria. The test results showed the discontinuity of porosity on the surface of the welded product in specimen 1 is the largest rounded 5 mm at 233 mm distance so that based on the acceptance criteria of AWS standard, the welding result is accepted and the specimen 2 there is discontinuity at 233 mm with the size of 8 mm so that Otherwise rejected. This rejected result can be improved by gouging the discontinuity and then welded.
The Effect of Climate Engineering on Strawberry Plant Growth in the Lowlands Aa Setiawan; Ahmad Maulana Kartika; Wardika Wardika
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 (1233.483 KB) | DOI: 10.31884/jtt.v4i1.82

Abstract

This research aims to study the effect of climate engineering on the growth of strawberry plants in the lowlands. This research was conducted in greenhouse media of 6 m2 wide and 2 m high with roof cover and wall of ultraviolet plastic with roof damper using straw. Types of strawberry plants that will be used are varieties of strawberries (Alpine) Red and White Mixed. The planting medium of strawberries uses a polybag placed on the shelf. The analysis discussed in this research is the analysis of temperature and humidity attainment and growth and development of strawberries. Temperature and humidity attainment is indicated with fixed temperature and humidity data of 17 0C – 20 0C and 80% - 90% Rh under all conditions. Strawberry growth analysis is indicated by increasing stolon size while development is indicated by a change in fruit form.The results showed that the greenhouse room during the day only able to reach an average temperature of 22 0C and 70% moisture. While in the morning and afternoon greenhouse space is able to reach the temperature and humidity of strawberry habitat. Using temperatures and humidity under the design, strawberry plants are still alive and well developed which is indicated by the addition of stolon length, the appearance of new shoots, fruit ripening, and the addition of strawberries.
TEST CHARACTERISTICS OF CENTRIFUGAL PUMPS ON COOLING HYDRONIC SYSTEM USING ENVIRONMENTAL FRIENDLY REFRIGERATION Yudhy Kurniawan; Kusnandar Kusnandar
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 (1188.767 KB) | DOI: 10.31884/jtt.v4i1.93

Abstract

In generally cooling hydronic system applied to large-scale commercial or industrial use, where water cooling is processed through heat transfer mechanism in the evaporator pipe using a vapour compression system such as a chiller with refrigerant. The research idea is based on not available practice test of cooling hydronic system at the Department of Refrigeration and Air Conditioning Engineering at State Polytechnic of Indramayu which is the main competency in the course of Air Conditioning Applied. As teh utilization practice made cooling hydronic system by utilizing a vapour compression system that is split AC using refrijeran R32 is environmentally friendly. The split AC system modifies its evaporator coil into a heat exchange medium to cool water in the water tank. The cold water is then distributed in the piping installation system with the two pumps that are varied in series and parallel. From this process, it is necessary to know the working capability of the pumps in terms of its characteristics (head and capacity) or its performance, including energy losses and cooling capacity system. The results obtained are analyzed and the calculation is in accordance with theoretically known study.
PENERAPAN ALGORITMA DIJKSTRA UNTUK PENENTUAN JALUR TERBAIK EVAKUASI TSUNAMI – STUDI KASUS: KELURAHAN SANUR BALI Eka Ismantohadi; Iryanto Iryanto
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 (656.92 KB) | DOI: 10.31884/jtt.v4i2.79

Abstract

Tsunami cukup sering terjadi di Indonesia. Hal ini tidak terlepas dari fakta letak geografis Indonesia yang terletak pada tiga lempeng tektonik utama. Bali termasuk salah satu wilayah yang memiliki potensi tsunami. Mengingat hal tersebut adanya jalur evakuasi terbaik sebagai sarana mempercepat tindakan untuk menjauhkan warga setempat dari bahaya yang ditimbulkan (evakuasi) menjadi sangat penting. Dalam penelitian ini, dipilih Kelurahan Sanur Denpasar Bali sebagai objek penelitian tersebut. Jalur evakuasi terbaik dicari dengan algoritma Dijkstra. Di sini hasil jalur evakuasi terbaik dikelompokkan berdasarkan letak tempat evakuasi dan area aman.
RANCANG BANGUN MESIN PENCUCI UMBI PORANG UNTUK MENINGKATKAN KINERJA PENGOLAHAN PORANG Suharto Suharto; Suryanto Suryanto; Sarana Sarana; Teguh Budi Santosa
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.
ANALISIS PERBANDINGAN PERENCANAAN METODE CPM PROYEK ICCP MENGGUNAKAN VARIASI PELETAKAN GROUNDBED PADA LINE PIPA GAS EKSISTING PERUSAHAAN PUPUK Vitalia Dian Novita; Bambang Antoko; Pekik Mahardhika
Jurnal Teknologi Terapan Vol 5, No 1 (2019): Jurnal Teknologi Terapan
Publisher : P3M Politeknik Negeri Indramayu

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (783.699 KB) | DOI: 10.31884/jtt.v5i1.119

Abstract

Perusahaan pupuk di Indonesia didirikan untuk memenuhi kebutuhan pertanian dan pangan nasional. Untuk menunjang pelayanan distribusi maupun proses, sistem perpipaan di dalamnya didesain dengan memperhatikan performanya, termasuk pada proteksi katodiknya. Pada salah satu pabrik di perusahaan pupuk yang diteliti sedang memiliki permasalahan proteksi katodik sehingga membutuhkan pergantian sistem proteksi dari SACP yang sudah ada menjadi ICCP. Mengacu pada penelitian sebelumnya dan berdasarkan kondisi area yang sudah ada, variasi penempatan groundbed dapat dilakukan untuk dianalisa mana yang paling tepat digunakan untuk sistem perpipaan di perusahaan pupuk tersebut. Sebanyak 5 titik lokasi telah dipilih berdasarkan pertimbangan kondisi area sesuai dengan sketsa terlampir. Langkah pertama adalah melakukan perhitungan teknis pada masing-masing variasi, kemudian melakukan perencanaan proyek yang selanjutnya dianalisa keunggulan dari hasil perhitungannya. Dari hasil perhitungan yang telah dilakukan, dapat disimpulkan bahwa sistem ICCP dengan menggunakan 2 groundbed tipe 3 adalah yang paling efektif digunakan untuk sistem perpipaan eksisting pada pabrik yang diteliti karena memiliki keunggulan terbanyak dibandingkan variasi yang lain.
Rancang Bangun Vibration Test Bench untuk Mensimulasikan Kondisi Unbalance dengan Pengaturan Putaran dan Beban Unbalance Imam Maolana
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. 

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