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HENDRA SAPUTRA
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Jurnal Teknologi dan Riset Terapan (JATRA)
Published by Politeknik Negeri Batam
ISSN : 26854910     EISSN : 26854910     DOI : -
Core Subject : Science, Engineering,
Aerospace Engineering Computer Science & IT Electrical & Electronics Engineering Engineering Mechanical Engineering
Jurnal Teknologi dan Riset Terapan (JATRA) is scientific, peer-reviewed and open access journal managed and published by Research and Community Services, Politeknik Negeri Batam. The journal is published two times a year on June and December. Jurnal Teknologi dan Riset Terapan (JATRA) provides immediate open access to its content on the principle that making research freely available to the public supports a greater global exchange of knowledge.
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 6 Documents
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Search results for , issue "Vol 3 No 1 (2021): Jurnal Teknologi dan Riset Terapan (JATRA) - June 2021" : 6 Documents clear
Studi Mula Pembuatan Purwa-rupa Smartphone Document Scanner Stand Dengan Metode Taguchi Rahman Hakim; Agung Nirwana; Annisa Fyona; Widodo Widodo; Benny Haddli Irawan
Jurnal Teknologi dan Riset Terapan (JATRA) Vol 3 No 1 (2021): Jurnal Teknologi dan Riset Terapan (JATRA) - June 2021
Publisher : Politeknik Negeri Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30871/jatra.v3i1.2979

Abstract

The need for digitally scanned documents has become a public need these days. Furthermore, smartphone usage with supporting applications to scan barcodes and documents digitally has become a trend. The problem that often occurs when scanning documents is the instability of the hand-held document. In addition, the 3-axis coordinate determination of a smartphone is also not easy to control. Therefore, tools are needed to speed up and simplify the scanning process. This research aims to create a tool that can increase work productivity when scanning documents using a smartphone. Market analysis, engineering planning, and prototypes have been carried out to learn what will decide mass production and sale in general. The data analysis method used a full factorial design, using gender as a factor and preparation time and data scanning time as levels. The initial preparation time to retrieve photo and PDF documents from the initial preparation and scanning results on average takes 4.357 minutes with Std. Deviation 1.739 minutes. As for the following scan with the same paper size, it only takes 1.242 minutes with Std. Deviation 0.201 minutes. The production cost of this prototype is 126.22USD with Std.Deviation 11.36USD. Even though the production cost is the highest, it has a TKDN value of 100% and the application of PBL by students who can carry it out well.
INTEGRATION SYSTEM OF CAD/CAM IN MACHINARY PROCESS USING WIRE-EDM Domi Kamsyah; Ari Kurniadi; Benny Haddli Irawan; Rahman Hakim; Saiful Arif
Jurnal Teknologi dan Riset Terapan (JATRA) Vol 3 No 1 (2021): Jurnal Teknologi dan Riset Terapan (JATRA) - June 2021
Publisher : Politeknik Negeri Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30871/jatra.v3i1.3050

Abstract

Computer-Aided Design (CAD) and Computer-Aided Manufacturing (CAM) are usually used to draw sketches and model manufacturing work processes on machines that operate using computer numerical control (CNC). To communicate with each other CAD and CAM must have the same format, the drawings produced by CAD must the same format to be run on the CAM. In this study, product images will be created using Autocad software and it will run on the Fikus VisualCAM 19 software to visualize the tool pathway. The program is created to run a CNC machine and the resulting product will check the conformity of its dimensions and geometry. The results obtained are that the images generated from the AutoCAD software can run well on the Fikus VisualCAM 19 software. The program in the form of NC code generated by AutoCAD and Fikus VisualCAM19 software can be run properly by a CNC wire-cutting EDM machine, this can be seen from the product results that match the dimensions and geometry.
Karakteristik Lambung Kapal Gurindam Fuel Engine Politeknik Negeri Batam Sapto Wiratno Satoto; Nidia Yuniarsih; Hendra Saputra; Mufti Fathonah Muvariz; Naufal Abdurrahman Prasetyo; Nurman Pamungkas
Jurnal Teknologi dan Riset Terapan (JATRA) Vol 3 No 1 (2021): Jurnal Teknologi dan Riset Terapan (JATRA) - June 2021
Publisher : Politeknik Negeri Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30871/jatra.v3i1.3055

Abstract

The character of the ship's hull will determine the speed and movement of the ship. Ship engine power to overcome resistance is influenced by the hull of the ship so that in doing the design it is necessary to calculate precisely. This research is a further study related to the installation of wireless control devices and the design of unmanned hulls but with a different hull and engine shape. The conclusions obtained from this study are the main size of the ship are as follows: LWL = 66.74 cm; B = 32.07 cm; T = 4.91cm; Cb = 0.338. The ship has pre planning at speed: 2.5 - 4.75 knots with 6.09 – 19.6 N resistance and froud number values between 1.028 – 1.952, then experience planning at a speed of 3.5 knots with resistance values starting at 5.59 N with froud number starting at 1.439. To reach the speed of 10 knots, the ship needs around 102 W of power. The object of the ship investigated above is the Batam State Polytechnic Gurindam ship, where the ship was once used for the national fast boat contest in Indonesia. Hopefully with this research, it can provide a knowledge related to the resistance that occur and, in the future, will be used as the basis for the development of the ship to be better designed.
Simulasi Numerik Hot-Spot Stress dan Stress Concentration Factor pada Sambungan Tubular Sederhana T, Y, K, dan X Nurman Pamungkas; Suheri Suheri; Nur Fitria Pujo Leksonowati
Jurnal Teknologi dan Riset Terapan (JATRA) Vol 3 No 1 (2021): Jurnal Teknologi dan Riset Terapan (JATRA) - June 2021
Publisher : Politeknik Negeri Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30871/jatra.v3i1.3104

Abstract

In offshore structures installation, tubular joints are commonly used. Tubular joints fabricated with welding processes often cause high hot-spot stress (HSS). High value of HSS and stress concentration factor (SCF) in tubular joints will reduce the service life of offshore structures due to fatigue loads. In this study simple tubular junctions T, Y, K, and X were used to obtain HSS and SCF through FEM simulation. The location of the maximum HSS under axial loading varied around the initial crown, in the In-Plane Bending (IPB) loading located after the second crown, while in the Out-of-Plane Bending (OPB) loading it was around the second saddle. In general, the SCF value in the three loading models from the FEM simulation is lower than SCF formula calculations in the previous study, these results are in line with recent SCF review study.
Analisa Tegangan Pipa Pada Sistem Ballast Kapal Tugboat 24 Meter Menggunakan AutoPIPE Hendra Saputra; Nurzain Miftakhul Jannah
Jurnal Teknologi dan Riset Terapan (JATRA) Vol 3 No 1 (2021): Jurnal Teknologi dan Riset Terapan (JATRA) - June 2021
Publisher : Politeknik Negeri Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30871/jatra.v3i1.3107

Abstract

Ballast system on ship especially on tugboats aims to maintain ship stability and to help the ship sail in safe condition. The design of ballast system, the used of pipe in this system is necessary to do pipe stress analysis to make sure the pipe is safe to support the system. This study aims to analyze the pipe stress happened in the system. The pipe stress analysis focuses on sustained and hope stress. On this study, we use AutoPIPE software to create the pipe model and to analyze the pipe stress. ASME B31.3 standard (piping process) is used as code standard on pipe stress analysis. For the purpose of pipe modelling, the piping of ballast system is divided into two piping lines. The piping lines No.1 is the line from seachest to water ballast tank and piping line No.2 is line from water ballast tank to overboard. The temperature used in the analysis is 30°C or at normal seawater temperatures, while the working pressure of the ballast system used is 72.52 Psi for each line number. The result of this study shown that the sustained stress and hoop stress that occur in piping line No.1 are 8,466 Psi and 3,732 Psi, respectively and in piping line No.2 are 7,020 Psi and 1,328 Psi, respectively. The result also shown that the pipe stress for both lines are still below the material allowable stress, where the allowable stress of the material is 20,000 Psi.
Studi Pengaruh Flame Straightening Terhadap Kekerasan Material High Strength Low Alloy (HSLA) Nur Fitria Pujo Leksonowati; Salman Al Faris; Nurman Pamungkas
Jurnal Teknologi dan Riset Terapan (JATRA) Vol 3 No 1 (2021): Jurnal Teknologi dan Riset Terapan (JATRA) - June 2021
Publisher : Politeknik Negeri Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30871/jatra.v3i1.3109

Abstract

High strength low alloy (HSLA) steel has higher mechanical strength than steel in general but with easy weldability, in this study the material used is S690QL. Flame straightening is used to restore the distorted shape of the S690QL material due to the heating and cooling process during the fabrication process. The purpose of this study was to determine the hardness value of the S690QL material after going through the flame straightening process. Flame straightening process is carried out by line heating technique using temperature variations of 700 °C, 750 °C, and 800 °C for 45 minutes in each temperature variant. A nozzle with a diameter of 14 mm – 20 mm with a multi flame torch is used in the flame straightening process. As a step to reduce residual stress and stress relieving, Post Weld Heat Treatment (PWHT) with a holding time of 1 hour was carried out. The process is continued with water cooling to room temperature. Vickers hardness test is carried out by taking 9 sample points, 2 points on the base metal, and 7 points on the Heat Affected Zone area. Based on the test results, it is known that at temperatures of 700 and 750 there has been no phase change, so the highest hardness values ​​at these temperatures are 270 HVN and 295 HVN. While at a temperature of 800 °C, there was a phase change marked by the hardness value which increased to 379 HVN.

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