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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 63 Documents
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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.
Perbandingan Hasil Koordinat Kerangka Pemetaan Menggunakan Metode Bowditch Poligon Tertutup Dengan Metode Adjustment Triangulated Quadrilateral Farouki Dinda Rassarandi; Oktavianto Gustin; Putra Putra
Jurnal Teknologi dan Riset Terapan (JATRA) Vol 3 No 2 (2021): Jurnal Teknologi dan Riset Terapan (JATRA) - December 2021
Publisher : Politeknik Negeri Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30871/jatra.v3i2.2990

Abstract

The basic mapping framework is divided into two types: the horizontal framework (planimetric) and the vertical framework (height). The basic horizontal framework of mapping varies depending on the selection and usability policy determined by many factors, which as the area, tools availability, and the calculation method. The geodesy field's commonly used basic mapping frameworks are triangulation and polygon methods. A least-squares calculation method or a least-squares triangulation adjustment can be used to obtain the precise map frame coordinate value from the triangulation method measurement results. On the other hand, the polygon method uses Bowditch to solve the problem. The least-squares method (adjustment) is well known as the three methods. There are parameters, conditions, and combinations. The least-squares method of triangulation (triangulated quadrilateral adjustment) can use the conditions or measurements equation either azimuth or angle measurement. The procedure of this equation involves parameter adjustment, where these parameters are the coordinates on a flat surface. This study compares the coordinate result of the enclosed polygon mapping framework between the Bowditch method and the Adjustment Triangulated Quadrilateral method. The coordinates result of the calculations using the Bowditch method provides value better than the adjustment method, where the confidence interval of the standard deviation of the coordinates using this method is around 0.400954085 ft minimum and 1.020967284 ft maximum in the 90% of a confidential level, in the other hand, the adjustment method ranges between 1.112780078 ft minimum and 2.833521575 ft maximum.
Pengujian Sulphide Stress Corrosion Cracking Pada Sambungan Las API 5L X65 dan ASTM A694 F65 Aulia Fajrin; Nugroho Pratomo Ariyanto; Aldyno Heryanda
Jurnal Teknologi dan Riset Terapan (JATRA) Vol 3 No 2 (2021): Jurnal Teknologi dan Riset Terapan (JATRA) - December 2021
Publisher : Politeknik Negeri Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30871/jatra.v3i2.3029

Abstract

Corrosion is a problem that always occurs in metals in their application to the environment. Although there are already several other substitute materials such as polymers and composites, the use of metals is still very much needed and plays an important role, especially in the oil and gas fabrication industry. Corrosion cannot be avoided but can be minimized because of the nature of the metal that will return to its origin. Metals used in the oil and gas fabrication industry require a material test against stress factors and the environment. The SSCC (Sulphide Stress Corrosion Cracking) test based on NACE TM0316 is a test of material resistance to stress and acidic environments. In this SSCC test, the method used is Four-Point Bending, which means that there are four roller jigs to bend the specimen. The specimens used are API 5L X65 pipe welded joint specimens and ASTM A694 flange. The welding process on this specimen uses the GTAW (Gas Tungsten Arc Welding) process. The specimens tested have several stages, starting from the preparation of the machined material, cleaning, then bending to soaking in an acidic liquid. This aims to determine the indications that appear on the surface of the specimen in the form of cracks in both the weld and the base metal. The test used three specimens with different IPRR welding processes. Specimens 1 and 3 are accepted specimens, while specimen 2 is rejected specimens based on the SSCC DNV Test Procedure, where the acceptance criteria from the MPI results are acceptable if the indication is less than 1 mm in length.
Rancang Bangun Alat Peraga Axial Flow Turbine Dengan Menggunakan Tenaga Electrical Sebagai Media Pembelajaran AMTO James Siregar; Lalu Giat Juangsa Putra; Rizky Pratama Hudhajanto; Dicky Reza Prawira
Jurnal Teknologi dan Riset Terapan (JATRA) Vol 3 No 2 (2021): Jurnal Teknologi dan Riset Terapan (JATRA) - December 2021
Publisher : Politeknik Negeri Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30871/jatra.v3i2.3113

Abstract

Aircraft maintenance is very important in aviation safety. Therefore, ICAO (International Civil Aviation Organization) strictly regulates the people who can carry out the maintenance process. To be able to become a mechanic or engineer who maintains aircraft, it is necessary to have 3 stages, namely the basic certificate, type rating and AMEL (Aircraft Maintenance Engineering License). Currently in Indonesia there are only 13 AMTO (Aircraft Maintenance Training Organizations) that can issue the certificate. AMTO schools are limited because the facilities required by the authorities are very high and expensive. One of these facilities is a turboprop engine, a type of generator aircraft engine that uses a gas turbine to drive the propeller. The high cost of the training equipment facilities, which can reach hundreds of millions or even billions, gave rise to the idea to make a simple teaching aid about turboprop systems in general, namely the Axial Flow Turbine which applies the concept of a turboprop engine where the propeller can rotate due to mechanical motion from the gear that comes from the DC motor. Manufacture of Axial Flow Turbine components using lathe, and milling. The materials used are iron, plastic, and rubber. The Axial Flow Turbine can produce a maximum rpm of 200 rpm. After passing the maximum limit, the propeller's ability to rotate will decrease significantly. In the end, the Axial Flow Turbine teaching aid can be used as a learning medium, especially the turboprop system.
Pengujian dan Pengukuran Perubahan Coating Liquid Flow Rate dan Coating Time Duration Terhadap Hasil Coating Quality Angle Mesin Diener Tetra 100 Yoga Prisusilo; Ihsan Saputra
Jurnal Teknologi dan Riset Terapan (JATRA) Vol 3 No 2 (2021): Jurnal Teknologi dan Riset Terapan (JATRA) - December 2021
Publisher : Politeknik Negeri Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30871/jatra.v3i2.3174

Abstract

One of the things that become a benchmark for the quality of a product is that the product complies with specifications and there are no production defects. Diener Tetra 100 machine is used to produce Housing top, Housing Bottom, Rocker switch, Battery door, push-button, and T. Coil. Usually, the Diener Tetra 100 machine product is often rejected due to dirty, incorrect parameter settings, and unacceptable coating heating levels. This research examines the effect of changing the Diener Tetra 100 machine parameters and checking measurements on the coating results. This study aims to obtain the optimal value of the coating liquid flow rate and the coating spraying time (time duration). This research was conducted by varying the parameter settings for coating liquid flow rate, coating time duration, and temperature chamber, where the independent variables were Time duration 10 minutes, 30 minutes, 45 minutes, and the independent variables were coating liquid flow rate, 70 ml/second, 100 ml. /second, 130 ml/second, with the same Temperature Chamber 60oC. Based on the results obtained in this study, found three optimal parameters on the Diener Tetra 100 machine. Among them were is the Coating Time Duration 45 minutes and coating liquid Flow rate 70 ml/second; Time Duration Liquid 30 minutes and Coating liquid flow rate 100 ml/second; Time Duration of Liquid is 10 minutes, and coating, liquid flow rate, is 130 ml/second because the percentage of product rejects obtained from the results of this study is low.
Studi Kekuatan Pressure Vessel Dengan Menggunakan Material SA-106 Grade B dan SA-516-70N Silvia Uli Arta Lubis; Mufti Fathonah Muvariz; Nurul Fadilah; Naufal Abdurrahman Prasetyo; Sapto Wiratno Satoto; Nidia Yuniarsih
Jurnal Teknologi dan Riset Terapan (JATRA) Vol 3 No 2 (2021): Jurnal Teknologi dan Riset Terapan (JATRA) - December 2021
Publisher : Politeknik Negeri Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30871/jatra.v3i2.3652

Abstract

A Pressure Vessel is a container for storing liquid and gas fluid shaped like a cylinder that can produce pressure from outside or inside. Almost all oil and gas industries often use this object to collect and separate water and oil from offshore exploration. This study aims to determine the strength of a Pressure Vessel and determine which is more economical by comparing two types of materials, namely SA-106 Grade B and SA-516-70N, with the same thickness of 12.7 mm. Simulations are carried out on the shell using SolidWorks software to find out the strength of each material. The data used in this study refer to one of the Pressure Vessels from the company with the basic design following ASME section VIII Div.1 standard 2007, document name "Cartridge Filter C027-S-U13000-01 A / B" and document number 6522 -XXX-C027-ISGP-U40300-MX-4018-00XXX with a design pressure of 10 bar, a design temperature of 121 ° C, an inner diameter of 444.5 mm, a corrosion factor of 3 mm. From the calculations and simulations that have been carried out, the values ​​obtained from the maximum pressure on the SA-516-70N material are 34.10 Bar, and the SA-106 Grade B material is 16.90 Bar. The voltage received from the pressure vessel is based on the analysis of the SolidWorks software with the same value for both materials at 1758 psi / 121 Bar. This study also proved that SA-106 Grade B material is far more economical, with an estimated budget of Rp6,531,951 for one 10m long pipe.
Kualifikasi Welder FCAW-GS Pada Posisi 6G Menggunakan Multiple Code (AWS D1.1, ASME Sec. IX, dan ISO 9606-1) Rafi Julio Putra; Nurul Laili Arifin; Tian Havwini; Nugroho Pratomo Ariyanto
Jurnal Teknologi dan Riset Terapan (JATRA) Vol 3 No 2 (2021): Jurnal Teknologi dan Riset Terapan (JATRA) - December 2021
Publisher : Politeknik Negeri Batam

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30871/jatra.v3i2.3662

Abstract

Welder qualification is the qualification of a welder or welder that aims to prove the quality of the welder, which is carried out following the rules in international codes/standards such as AWS, API, ASME, ISO, and other codes/ codes/standards. The purpose of this report is to design a welder qualification scheme using three codes/standards at once, namely: AWS D1.1 (2020), ASME Sec. IX (2019) and ISO 9609-1 (2017). Thus, it can minimize costs, time, and the preparation needed to qualify the welder. The methodology used was a literature review to get the similarity of the variables, which will later be used to qualify the welder using the three codes/standards used. After obtaining the required variables, the next step was the implementation of these variables to qualify the welder from the material preparation and welding process to test the weld results. In order to qualify the welder with three codes/standards at once, it was necessary to pay attention to the relationship for each variable used to cover one code with another. If one of the variables cannot be met in one of the codes/standards used, then the welder's qualification using three codes/standards cannot be implemented. The material used in this welder qualification is ASTM A106 Grade B with a material length of 170 mm × 170 mm with a thickness of 18.26 mm and a diameter of 6" (168.3 mm) sch 160. The test methods used were Visual Inspection and Side Bend Test with four samples.

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