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A Sumarudin
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shumaru@polindra.ac.id
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INDONESIA
JTT (Jurnal Teknologi Terapan)
ISSN : 24773506     EISSN : 25491938     DOI : -
JTT memuat naskah hasil-hasil penelitian di bidang teknologi terapan.
Articles 71 Documents
Pengaruh Penerapan Remote Electronic Voting System (REVS) Terhadap Tingkat Partisipasi Pemilih Menggunakan Model UTAUT Setiawan, Aji
Jurnal Teknologi Terapan Vol 3, No 1 (2017): Jurnal Teknologi Terapan
Publisher : P3M Politeknik Negeri Indramayu

Show Abstract | Original Source | Check in Google Scholar | Full PDF (421.919 KB) | DOI: 10.31884/jtt.v3i1.1

Abstract

Penggunaan sistem informasi penunjang seperti e-filling, e-ktp, e-procurement dan sebagainya yang sudah mulai diperkenalkan bagi masyarakat luas maupun individu-individu tertentu oleh pemerintah sudah cukup baik, namun sangat jauh berbeda bila kita cermati bagaimana upaya dan usaha pemerintah mendukung demokrasi dalam proses pemilihan umum dengan menggunakan e-voting, padahal saat ini memiliki banyak permasalahan yang memicu konflik-konflik horizontal ditengah masyarakat akibat proses pemilihan umum. Penelitian ini memiliki tujuan (1) memberikan bukti empiris tentang pengaruh e-voting yang diterapkan pada tingkat partisipasi yang didasarkan pada model teknologi ditawarkan, (2) menentukan pengaruh langsung variabel prediktor termasuk performance expectancy, effort expectancy, facilitating condition, mobility, security & privacy dan experience untuk tingkat partisipasi masyarakat. Faktor yang diteliti dalam penelitian ini menggunakan model UTAUT. Hasil penelitian menjelaskan bahwa penerimaan teknologi REVS dipengaruhi oleh variabel performance expectancy, dimana pemilih berharap agar rekapitulasi hasil suara bisa tepat dan akurat. Selanjutnya adalah variabel mobility dimana pemilih percaya mereka dapat melakukan pemilihan dimana pun mereka berada, tidak dihalangi oleh aturan yang mengharuskan mereka untuk menghadiri ditempat tertentu, sedangkan untuk security & privacy pemilih menginginkan sistem pemilu yang aman dari ancaman baik internal dan eksternal dan tetap menjaga nilai-nilai privasi.
OPTIMASI TEMPERATUR INTERFACE PADA PELAPISAN ULANG NI-HARD 1 DENGAN METODE GRAVITY CASTING Hanaldi, Kus; Purwadi, Wiwik; Kurnia Nurzaenal, Friya
Jurnal Teknologi Terapan Vol 3, No 1 (2017): Jurnal Teknologi Terapan
Publisher : P3M Politeknik Negeri Indramayu

Show Abstract | Original Source | Check in Google Scholar | Full PDF (1105.033 KB) | DOI: 10.31884/jtt.v3i1.6

Abstract

Grinding roll is one type of product made by the method of bimetallic casting. The product consists of two types of material that held together with foundry process. Grinding roll has two kinds of different material properties, outer grinding roll should be hard because it would destroy the mine or rock with material hardness at 9.3 mohs. The inside of the grinding roll should be soft,  for machining process , and also for dampen the vibration caused by the grinding process. In use, the outer layer of the grinding roll will be thinned. The purpose of this study to fix the beam Ni-Hard 1 by coating using a material Ni-Hard 1 with variable temperature liquid interface. The methodology of this study is the beam of Ni-Hard 1 to be coated (called die blank) is heated by the flow of liquid metal Ni Hard1. This process is called flushing. The volume of flushing fluid is accommodated at the disposal basin. The design, which has been determined, simulated using software (solidcast 8.2)  to determine the temperature of interface, and then carried out experiments in the workshop.The bond was analyzed by testing the microstructure, composition, and hardness. Results from this study is the technology to coat Ni-Hard 1 with material Ni-Hard 1 that bonding occurs at the surface. Results of research showed that surface fixing with gravity casting method can be applied at Grinding roll, with the temperature variable interface that must be achieved between 887 ° C – 1198 ° C, flushing time between 10-20 seconds, with a pouring temperature of 1438 ° C – 1468 ° C.
PENURUNAN TIMBULAN LIMBAH DENGAN MODIFIKASI SISTEM AIR STARTING MESIN MAIN BOOSTER PUMP Haris, Emin; Arsanto Wibowo, Arsanto Wibowo
Jurnal Teknologi Terapan Vol 2, No 2 (2016): Jurnal Teknologi Terapan
Publisher : P3M Politeknik Negeri Indramayu

Show Abstract | Original Source | Check in Google Scholar | DOI: 10.31884/jtt.v2i2.14

Abstract

Hazardous and toxic waste (LB3) is one of the environmental impacts that must be managed in the Republic of Indonesia in accordance with Indonesian Law No. 32 / 2009 on the Protection and Environmental Management Article 58. B3 is the residue of a business and / or activities that contain hazardous and toxic. Hazardous and Toxic waste generated shall be reduced in accordance with Article 10 of Indonesian Regulation No. 101 / 2014 on the Management of Hazardous and Toxic Waste. One sector that has a real contribution in donating B3 waste generation is the energy sector. PT Pertamina, which is engaged in the energy sector undertake efforts to reduce hazardous waste generation on the activities of pumping the fuel at the Balongan Fuel Terminal. The case studies conducted in Balongan. Starter activities that were previously used accumulator pose as hazardous waste to be modified. Reduced waste generation by Fuel Terminal Balongan by modifying the diesel engine starter system method with compressed air.
KAJIAN KENYAMANAN RUANG KULIAH TN II JURUSAN TEKNIK FISIKA UNIVERSITAS GADJAH MADA (UGM) DITINJAU DARI ASPEK TERMAL DAN POLA ALIRAN UDARA MENGGUNAKAN FLUENT Sunanto, Sunanto; Karsid, Karsid
Jurnal Teknologi Terapan Vol 2, No 2 (2016): Jurnal Teknologi Terapan
Publisher : P3M Politeknik Negeri Indramayu

Show Abstract | Original Source | Check in Google Scholar | DOI: 10.31884/jtt.v2i2.19

Abstract

Temperature and air circulation is an important factor in a building since it is closely related to health comfort. Therefore, the design of a building should be carry out precisely in getting a clean, healthy and comfortable air circulation in accordance to the requirement of the room.In order to carried out a good building designing, a research was needed to understand temperature distribution, the pattern of air flow and its velocity. In this research, a Classroom of TN II JTF UGM. This classroom have 1030 cm length, 790 cm of width, and 330 cm of height. The size of the windows is 100 x 100 cm and place 1m from the floor. The size of the doors is 140 x 210 cm. The windows are assumed to be widely open, the door always opened. The researched begins with geometric modeling of the model by using Gambit 2.2.30 and continued with model testing using Fluent 6.2.16. The test is carried out by giving three velocity variation of free air flowing i.e.: from 1.3 m/s, 3.61 m/s and 5.92 m/s, two direction variation of open air flowing and two variation temperature of free air i.e.: 21.50C and 27.650C.The standard of comfortable air velocity used in the room is 0.15 < V < 0.25 m/s, The standard of comfortable temperature used in the room is 20.50C and 27.10C. The air velocity and air temperature variation created comfort area and non comfort area in the room .The direction circulation of air variation created the different pattern air circulation in the room.
Pengaruh Pemasangan Kapasitor terhadap Cop (Coefficient Of Performance) Air Conditioning Anwar Syahputra, Syofyan; Mustakim, Mustakim
Jurnal Teknologi Terapan Vol 2, No 1 (2016): Jurnal Teknologi Terapan
Publisher : P3M Politeknik Negeri Indramayu

Show Abstract | Original Source | Check in Google Scholar | DOI: 10.31884/jtt.v2i1.24

Abstract

Non linear load harmonics cause, Air Conditioning is one of the main types of inverters that generate non linear load harmonics. Harmonics on the Air Conditioning so that the reduction must not interfere with the quality of power on the system and network. The ability of an Air Conditioning unit to cool a room can be known as Coefficient Of Performance (COP). This can be seen from the comparison between the heat energy required to cool the room with the electric energy used on the unit. In this case you will know the impact caused by the reduction of the harmonics of the COP. Reduction of harmonics used in this study using 16 F capacitor which also serves as a power factor improvement. The results obtained after using the capacitor found impairment harmonic currents (IHDi). After the measurement of the COP also increased from 2,740 becomes 3,176. This proves that the capacitor also function besides improving the power factor can reduce the harmonics an improve the COP.
Augmented Reality Penunjuk Arah Jalan Caferina, Monica; Sumarudin, A
Jurnal Teknologi Terapan Vol 1, No 1 (2015): Jurnal Teknologi Terapan
Publisher : P3M Politeknik Negeri Indramayu

Show Abstract | Original Source | Check in Google Scholar | DOI: 10.31884/jtt.v1i1.36

Abstract

Augmented reality adalah teknologi dengan konsep menggabungkan dimensi dunia nyata dengan dimensi dunia maya yang ditampilkan secara realtime. Augmented Reality tidak seperti realitas mayayang sepenuhnya menggantikan apa yang ada di dunia nyata, namun hanya sekedar menambahkan atau melengkapi. Hal ini dilakukan dengan cara menggambar obyek tiga dimensi pada marker, yakni sebuah pola yang bersifat unik dan dapat dikenali oleh aplikasinya. Smartphone memungkinkan pengembangan aplikasi Augmented Realitydengan mudah serta dapat diakses oleh banyak pengguna. Augmented Reality dapat dimanfaatkan dalam berbagai bidang salah satunya adalah sebagai sarana penunjuk arah jalan untuk mempermudah pengguna jalan. Augmented Reality dapat digunakan untuk menciptakan sebuah lingkungan yang lebih interaktif dimana pengguna dapat berinteraksi langsung dengan obyek dunia maya. Pada tugas akhir ini, mengembangkan sebuah aplikasi Augmented Reality yang ditujukan kepada para pengguna jalan sebagai alat penunjuk arah jalan. Aplikasi ini dibuat dengan Vuforia SDK sebagai alat untuk mengembangkan Augmented Reality dengan C# (C sharp) berbasis Android. Aplikasi Augmented Reality penunjuk arah jalan dapat membaca marker pada petunjuk jalan yang ada pada daerah Bundaran Mangga dan Bundaran Kijang Indramayu, yang akan menampilkan model 3 dimensi di layar perangkat Android dan menampilkan informasi arah jalan berupa linking ke Google Maps.
Analisa Uji Kekerasan dan Uji Tarik Material AISI P20 Mod. Hasil Perlakukan Hardening dan Tempering Kusnowo, Roni
Jurnal Teknologi Terapan Vol 1, No 1 (2015): Jurnal Teknologi Terapan
Publisher : P3M Politeknik Negeri Indramayu

Show Abstract | Original Source | Check in Google Scholar | DOI: 10.31884/jtt.v1i1.30

Abstract

Penelitian ini bertujuan untuk menganalisis uji kekerasan dan uji tarik pada material AISI P20 Mod. setelah melalui proses hardening dan tempering pada suhu yang berbeda-beda. Hardening adalah proses perlakuan panas yang diterapkan untuk menghasilkan benda kerja yang keras. Proses tempering bertujuan untuk memperoleh kombinasi antara kekuatan, keuletan dan ketangguhan yang tinggi. Material AISI P20 Mod. sebagai material substitusi impor yang diproduksi melalui proses continuous casting dimana dalam proses pembuatannya memerlukan proses rol (rolling) dan proses tempa (forging). Material ini mempunyai sifat dan karakteristik khusus, diantaranya tahan terhadap temperatur tinggi, tahan terhadap abrasi, dan mempunyai mampu mesin yang baik. Hasil penelitian menunjukkan uji kekerasan pada proses hardening mencapai nilai kekerasan 53,7 HRC. Selanjutnya dilakukan proses tempering pada suhu 200C hasil menunjukkan nilai kekerasan sedikit meningkat menjadi 54 HRC, sedangkan pada temperatur 400C terjadi penurunan nilai kekerasan menjadi 47,4 HRC. Baru setelah dilakukan tempering pada suhu 600C hasil uji kekerasan menunjukkan masuk target kekerasan yang diinginkan yaitu pada 34 HRC. Hasil uji tarik menunjukkan pada kondisi awal benda, hasil uji tarik adalah 655N/mm2. Kekuatan tarik hasil proses hardening sebesar 1244 N/mm2. Setelah dilakukan proses tempering 2000C dihasilkan kekuatan tarik 1515.8 N/mm2. Pada proses tempering 4000C, terjadi penurunan nilai kekuatan tarik menjadi 1397.9 N/mm2. Selanjutnya pada proses tempering 6000C nilai kekuatan tarik menjadi 1077.7 N/mm2, mendekati target kekuatan tarik yaitu 1020 N/mm2.
PENERAPAN SISTEM INFORMASI AKADEMIK (SIA) SEBAGAI UPAYA PENINGKATAN EFEKTIFITAS DAN EFISIENSI PENGELOLAAN AKADEMIK SEKOLAH Purwanto, Riyadi
Jurnal Teknologi Terapan Vol 3, No 2 (2017): Jurnal Teknologi Terapan
Publisher : P3M Politeknik Negeri Indramayu

Show Abstract | Original Source | Check in Google Scholar | Full PDF (751.156 KB) | DOI: 10.31884/jtt.v3i2.58

Abstract

Information Technology has provided an important role as a medium of information and communication in the field of education, one of them in School Academic Management. Implementation of Academic Information System as one way to increase effectiveness and efficiency of academic management include new student enrollment, student and teacher data management, management of lesson schedule, and student value processing. Academic Information System developed as an information service in the form of data related to academic data. In the development of Academic Information System, the methodology that can be used is Waterfall methodology which consists of several stages, among others: 1)Planing stage that is discussing the planning of the system to be developed, 2)Stage Analysis is to analyze the running system and the analysis of functional and non functional needs, 3)Design stage that is designing and designing system, and 4)Implementation Phase that is production of application and testing.The results showed that Academic Information System can improve the effectiveness and Efficiency of School Academic Management. In terms of effectiveness, academic information system can be used to improve communication and organize academic data accurately and accurately, while in terms of efficiency, academic information system can accelerate the academic management process, reduce operational costs (low cost and paper less) and reduce human error in processing student value
Analisis Perbedaan Tekanan Fluida pada Ball Valve Kondisi Full Closed dan Full Open dengan Computational Fluid Dynamics Rahmi, Meri; Canra, Delffika; Suliono, Suliono
Jurnal Teknologi Terapan Vol 4, No 1 (2018): Jurnal Teknologi Terapan
Publisher : P3M Politeknik Negeri Indramayu

Show Abstract | Original Source | Check in Google Scholar | Full PDF (625.011 KB) | DOI: 10.31884/jtt.v4i1.83

Abstract

Ball valve is one type of rotary motion valve. Ball valve functions as a round disc-shaped ball-like controller. Ball valve is widely used because it is easy to repair and the ability in high pressure and high temperature. The fluid flow in the ball valve does not always flow, sometimes the flow is closed. This will affect the fluid pressure in the valve. Fluid pressure is also affected due to valve open condition. This study aims to analyze the difference of the fluid pressure in ball valve -4 inch ANSI during closed condition and open condition. The method used is Computational Fluid Dynamics with f Flow Simulation Solidworks software. The analysis was performed for two valve conditions with a temperature of 425 °C. Decrease in pressure does not significantly affect the condition of the ball valve, even when the temperature of the fluid is high. The difference of fluid pressure between full closed condition and full open is only 0.01 psi.
PENGARUH DYMETIL ESTER PADA BIOSOLAR TERHADAP UNJUK KERJA MOTOR DIESEL SATU SILINDER PADA SUHU PEMANASAN BAHAN BAKAR 95 oC Rohmat, Yusup Nur; Kusnandar, Kusnandar; Saputro, Rizki Adila
Jurnal Teknologi Terapan Vol 4, No 1 (2018): Jurnal Teknologi Terapan
Publisher : P3M Politeknik Negeri Indramayu

Show Abstract | Original Source | Check in Google Scholar | Full PDF (732.788 KB) | DOI: 10.31884/jtt.v4i1.94

Abstract

The depletion of petroleum reserves makes the emergence of a variety of alternative energy, one of which is Biodiesel. Biodiesel is a fatty acid ester derived from vegetable oil or animal by transesterification or esterification reaction. The purpose of this study was conducted to determine the effect of the use of fuel mixture of biodiesel jelantah with heating 950C to power, torque and Sfc. The test is done by loading the lamp load from 200 - 3200 watt on variation of biodiesel fuel volume by 30%, 40% and 50%. The research method used is descriptive analysis where the result of research is described and described based on research result. From the test results resulted in the addition of biodiesel jelantah fuel effect on power, torque and Sfc generated diesel motor.