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Jurnal Rekayasa Mesin
Published by Universitas Negeri Surabaya
ISSN : 2337828X     EISSN : 29887429     DOI : https://doi.org/10.26740/jrm.v9i03
Core Subject : Science, Engineering,
Aerospace Engineering Automotive Engineering Control & Systems Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering
The Journal of Mechanical Engineering (JRM) is published three times a year, in April, August, and December, by the Applied Bachelor Degree Program (D4) in Mechanical Engineering, Faculty of Vocational Studies, Universitas Negeri Surabaya (UNESA). It serves as a medium of information and a forum for Development of Technology, Numerical Studies, Experimental Studies, and Applied Research in the field of Mechanical Engineering. The journal contains scientific papers, summaries of research results, literature reviews, and original critical ideas. The editorial team invites researchers, practitioners, and anyone interested in contributing articles that have not been published elsewhere. The themes of the articles include Machining Materials and Metallurgy Manufacturing Processes Mechanical Design Control Systems
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 310 Documents
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RANCANG BANGUN MESIN SPOT WELDING AND SOLDERING IRON SEMI PORTABLE Hidayat, Achmad Fachrus; Sakti, Arya Mahendra
Jurnal Rekayasa Mesin Vol 7 No 01 (2022): JRM
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jrm.v7i01.44343

Abstract

In the welding process, there are still some obstacles, such as the process is long and the results are not neat. In addition, a tool that can be used as a solder is needed which aims to support the repair process. To overcome this we need a tool with the best method, the author chose to develop a spot welding machine as the method. The spot welding design also combines stationary and portable types so that it can be used for purposes with different conditions. This design aims to find out the best design, control system, tool manufacturing process, and optimal operating method. Tool design begins with determining the design method. Design methods include: determining the theme, observation, Identification of Tool Requirements (Specifications), design concepts and design methods. The results of the design obtained tool specifications including: In the design of this spot welding machine using a MOT (Microwave Oven Transformer) transformer with a power of 1,215.35 Watt. So that the electric charge that flows on this machine for 10 seconds is 11,073 Joule. The control system used is based on a timer. The welding cable used is NYAF (fiber) type cable with 16mm. The arm drive system (JIG) uses a pressure cylinder mechanism that is actuated by a pedal. Inside the compression cylinder there is a spring with specifications 16mm, 15mm long with a wire diameter of 1.5mm which is used to generate welding pressure. The combination of the pedal mechanism and the spring obtained a pressure of 0.35 bar. The tool testing process is carried out by connecting a nickel plate that has a thickness of 0.5mm with a width of 5mm. The current given when the welding process is 390 Ampere with a pressure of 0.35 bar. Can be concluded; The best welding results occur in the time range between 4-6 seconds.
RANCANG BANGUN ALAT BANTU PENGELASAN LEHER KNALPOT STAINLESS STEEL Solichudin, Fiqih Nur; Sakti, Arya Mahendra
Jurnal Rekayasa Mesin Vol 7 No 01 (2022): JRM
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jrm.v7i01.44344

Abstract

ANALISA PENGARUH JUMLAH LILITAN DAN DIAMETER TEMBAGA PADA TRAFO TERHADAP DAYA OUTPUT MESIN SPOT WELDER AND SOLDERING IRON SEMI PORTABLE Sedjati, Moch. Ari Wibowo; Wulandari, Diah
Jurnal Rekayasa Mesin Vol 7 No 01 (2022): JRM
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jrm.v7i01.44345

Abstract

In the welding process, there are still some obstacles, namely the welding equipment used still requires a large amount of electricity. For this reason, a welding tool that has relatively small electrical power is needed, it requires a transformer that is able to cut electrical power. To answer the above problems, the author is interested in developing a MOT (Microwave Oven Transformer) transformer whose secondary winding is modified as an alternative to conventional transformers so that the electric power becomes small. This plan aims to make a transformer with an output power of 450 Watt on a "semi-portable spot welder and soldering iron machine" and capable of operating at home with 450 VA electricity. The process of making a transformer begins with determining the output power generated by a MOT (Microwave Oven Transformer) transformer. The design method determines the number of turns and the diameter of the copper in the transformer by using copper with a diameter of 12 mm and 16 mm, while the work concept determines the basic concept of calculating the output power and efficiency of the MOT (Microwave Oven Transformer) transformer.
ANALISA KECEPATAN MOTOR PADA ALAT BANTU PENGELASAN BAHAN LEHER KNALPOT STAINLESS STEEL Murod, Moh Iqbal; Sakti, Arya Mahendra
Jurnal Rekayasa Mesin Vol 7 No 01 (2022): JRM
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jrm.v7i01.44944

Abstract

In the manufacturing process, especially welding an object, there are still several obstacles, namely the quality of the welding results, besides depending on the welding work process it also depends on the selection of predetermined welding parameters so that the results obtained are very good. Therefore, every difference in welding speed is different as well as the results produced. So with the "stainless steel exhaust neck welding tool" it is hoped that it can help the welding process activities on the stainless steel exhaust neck. In the process, this tool still needs to be tested in terms that most affect the quality and productivity at rotational speed, it is necessary to carry out further studies related to this research. Therefore, the authors are interested in analyzing the variations in motor speed on the welding results on the tool. One way to analyze the welding results is to perform a tensile test for pipe welding with a diameter of 24mm and a thickness variation of 1mm and 1.2m, with variations in the welding speed of 3,4,5 mm/second. After getting the welding results, a tensile test is carried out to determine whether or not variations in motor speed are affected and to determine the maximum ability of the specimen to withstand loads which is commonly referred to as "Ultimate Tensile Strength" (UTS). From the tensile tests carried out, there was a decrease in the average value of the tensile stress for stainless steel pipe welding at a speed variation of 3 mm/second by 59.11 kg/mm2 to 53.53 kg/mm2 at a speed variation of 4 mm/second, as well as speed variation of 5mm/second which has an average tensile stress value of 45.13 kg/mm2. In other words, the variation of the welding speed of 3 mm/second is the ideal welding speed variation when the welding process uses a stainless steell exhaust neck.
RANCANG BANGUN SMOKE GENERATOR DENGAN ALIRAN ASAP SECARA KONSTAN UNTUK MEDIA PEMBELAJARAN DI LABORATORIUM AERODINAMIKA Matondang, Pahottua; Wailanduw, A. Grummy
Jurnal Rekayasa Mesin Vol 6 No 03 (2021): JRM
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jrm.v6i03.44949

Abstract

Students who carry out practicum at the Aerodynamics Laboratory of Mechanical Engineering, State University of Surabaya have a smoke generator that is still simple, where the tool still has shortcomings in producing thick and constant smoke. The design of this tool uses the Research and Development (R&D) method with the analysis carried out covering the design of the tool, the heater used and the material. Trials of several heating devices and materials that have been carried out such as water heaters using liquid paraffin and dry ice. The second experiment was using a hairdryer using liquid paraffin, VG glycerin and VG+PG glycerin, the third experiment using flat nickelin wire with liquid paraffin, VG glycerin and VG+PG glycerin and the fourth experiment using coiled nickelin wire using liquid paraffin, VG glycerin and glycerin. VG+PG. Experiments on heating devices and materials were carried out by dripping and also partially soaking, except for heating water with dry ice by adding hot air to dry ice. From the experiments that have been carried out, the maximum heating device in producing as soon as possible is using a coil of nickelin wire with liquid paraffin. The results of the development and engineering of the research tool decided to use 3 coils of nickelin wire with a length of 120 mm, a diameter of 10 mm with a resistance per nickelin of 3.5 Ohm. For the power supply, the adapter uses an AC input of 220V DC output of 24V 10A and uses liquid paraffin as a liquid to be evaporated, because it does not cause corrosion of tools or wind tunnels. This tool works by evaporating liquid paraffin that is submerged in a coil of nickelin wire with a horizontal hanging position. It takes 3-5 minutes to get production fast which is good. From the smoke generator test results, this tool can be used for 10 minutes per rake in the wind tunnel in the data collection process.
RANCANG BANGUN ALAT MONITORING KERJA SENSOR PADA SEPEDA MOTOR INJEKSI Sari, Heni Musvita; Wailanduw, A. Grummy
Jurnal Rekayasa Mesin Vol 7 No 01 (2022): JRM
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jrm.v7i01.45065

Abstract

In today's modern era motor vehicles, especially motorcycles, have been dominated by electronic devices. Automotive electronic systems typically use ECU (Electronic Control Unit), a digital control by a microcomputer that allows the formation of information processes quickly and highly accurately. ECU can also detect damage there is an electrical system in motor vehicles, especially in motorcycles through sensors in motorcycle engines. And also be able to know the electronic system on a motorcycle is needed so that users/motorcyclists can fix it for that the purpose of this research is to create a system or device that can monitor the performance of electronic systems on motor vehicles, especially in motorcycles, in real-time through serial display programs using Arduino nano microcontrollers and store data in Excel. The method used in this engineering is to use a frame with a length dimension of 384 mm and a width of 264 mm with a height of 102 mm. Using a microcontroller. The mechanism of the tool is to process data from sensors and then the data is processed using a microcontroller into data whose output can be to LCD or Lamp or to excel with the help of a third-party program, namely PLX DAQ. The results of this engineering show that the standard value of measurement ofO2 levels resulting from this engineering in injection motorcycles is still far from the tool in the market because there are unit differences in the sensor work monitoring tool on injection motorcycles with tools in the market. And the results of this engineering for temperature measurement there is a difference in the measurement position in the sensor work monitoring tool on the injection motorcycle is on the cylinder head, while in the EOT measuring device.
RANCANG BANGUN SISTEM PERPIPAAN "RAKE" PADA ALAT VISUALISASI ALIRAN DI LABORATORIUM AERODINAMIKA Zuhri, Mochamad Saifudin; Wailanduw, A. Grummy
Jurnal Rekayasa Mesin Vol 6 No 03 (2021): JRM
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jrm.v6i03.45066

Abstract

Fluid mechanics is a scientific discipline, which is part of the field of applied mechanics which studies the behavior of liquids and gases in a state of rest or motion. Fluid mechanics can be divided into fluid statics, fluid kinematics, and fluid dynamics. Fluid dynamics are fluid mechanics which study fluids in motion, especially liquids and gases. Fluid dynamics has a wide range of applications. Examples are used in calculating forces and moments on aircraft, mass flow rates of petroleum in pipelines, and forecasting weather patterns. Fluids are substances that can flow which have small to invisible particles and they can easily move and change shape without mass separation. Flow visualization is used to make the flow pattern of fluid (one of which is air) visible in order to obtain accurate data. The purpose of this research is to create a smoke generator that can spray smoke continuously. The method used in engineering is to vary the distance between the output pipes (tubes). There are three variations of rake used with each distance between the output pipes (tubes) of 60 mm (5 pieces), 42 mm (7 pieces), and 30 mm (9 pieces). The diameter of the outlet pipe (tube) and the main pipe (manifold) are made the same. The results of this engineering show that with variations in the distance between the output pipes (tubes) on the rake, different visualization results are obtained. In the 9 output pipe variations, the smoke output (streamline) is better than the other two versions, it can be seen from the visualization of the flow at the stagnation point and the flow is deflected to the upper and lower surfaces. While the visualization of the flow behind the vehicle there is not too much change because it does not vary the angle of the diffuser.
RANCANG BANGUN ALAT UJI BENDING DENGAN SISTEM HIDROLIK Fais, Fahrizal Muhammad; Ningsih, Tri Hartutuk
Jurnal Rekayasa Mesin Vol 7 No 01 (2022): JRM
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jrm.v7i01.45067

Abstract

The importance of bending testing is to determine the ability of the mechanical properties of materials, especially welded steel materials, to determine the flexibility of the material and the strength of the test material. Bending testing is mostly done to test the bending ability of the welded material. In materials science courses and in materials science laboratories there are no practical teaching aids and bending testing. Therefore, this bending test tool is made very safe for practical demonstrations and testing in the laboratory. In practice, there are still few material testing practitioners who pay attention to aspects of the effect of variations in the test object on the bending test results data, and the dimensions that already exist in the ASTM E855-08 standard that we use. For this reason, this bending test tool was made to study the effect of variations in the dimensions of the test object on bending testing. The test is carried out using a hydraulic system bending test equipment. The research method used is three-point bending, where the tool in this study is a modified tool from an existing tool. And the test of the S45C steel test material is a one-dimensional variation with three trials, namely with a size of 400x40mm and has a thickness of 5mm while the method used in this test is three-point bending. The test results show that the dimensions of the test object affect the compressive force that occurs during testing. The larger the dimensions tested, the greater the compressive force generated. When performing the bending test, the average value of flexural strength obtained using the three-point bending method for 5mm thick steel is 213.5 Mpa, the second test is 228 Mpa, and the third test is 232.1 Mpa.
RANCANG BANGUN ALAT UJI KEKAKUAN PEGAS Rachmanda, Reza Irfani; Wulandari, Diah
Jurnal Rekayasa Mesin Vol 6 No 03 (2021): JRM
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jrm.v6i03.45081

Abstract

Actually, this spring is also discussed in physics, wherefrom the spring we can calculate the increase in the length of the spring based on the given load. Spring is an elastic object used to store mechanical energy. Springs are usually made of steel. There are several spring designs. In everyday usage, this term refers to Coil Spring. Springs are also found in motorcycle suspension systems. In motorcycles, springs have the function of absorbing shock from the road and wheel vibrations so that they are not transmitted directly to the vehicle body. In addition, springs are also useful for increasing tire grip on the road surface. In the teaching and learning process in physics courses, there are still obstacles, namely, there is no vibration practicum tool, from the desire to know the design of the tool, and to know the results of the tool's performance, the author can apply the results of the lectures that have been taken in the previous semester. This design aims to determine the design of the tool and the results of the performance of the spring stiffness test equipment. The design of the trainer uses the Research and Development (R&D) method or experimental-based development design. The spring stiffness test is a test of the change in the length of the spring when it is given a certain load. This study aims to design, manufacture and test spring stiffness test equipment. In the design process, it is necessary to calculate the frame, function, and type of material to be used. The analysis carried out includes determining the electric motor, determining the material used, knowing the design of the tool, and knowing the results of the performance of the tool later. After analyzing the work of the tool and analyzing the test results, a conclusion will be obtained that can be drawn based on the existing data.
ANALISA HASIL PENGELASAN LAS TITIK PADA MESIN SPOTWELDER AND SOLDERING IRON SEMI PORTABLE Rahman, Riandito Auki Minanda; Wulandari, Diah
Jurnal Rekayasa Mesin Vol 7 No 02 (2022): JRM
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jrm.v7i02.45996

Abstract

Pada proses manufaktur khususnya pengelasan suatu benda ada beberapa masalah yaitu kualitas dari hasil pengelasan dan biaya pembuatan alat tersebut relatif lebih mahal, disamping itu tergantung proses pekerjaan lasnya juga tergantung pada pemilihan parameter pengelasan yang sudah ditentukan sehingga hasil yang didapatkan kurang maksimal. Salah satu cara untuk menganalisa hasil pengelasan yaitu dengan melakukan pengujian tarik hasil pengelasan stainless steel menggunakan tebal 0.6mm, 1mm pada variasi waktu 5detik, 7detik. Setelah mendapatkan hasil pengelasan dilakukan pengujian tarik. Pada pengujian ini menggunakan mesin Spotwelder and Soldering Iron Semi Portable ini memiliki daya output sebesar 1.107,6 Watt, Ampere sebesar 390, dan tegangan sebesar 2,84 Volt menghasilkan nilai beban tarik maksimal, tegangan tarik dan regangan. Nilai beban tarik maksimal tebal 0,6mm dengan waktu 5detik dan 7detik sebesar 259,80kg dan 213,20kg, sedangkan tebal 1mm sebesar 139kg dan 202kg. Nilai tegangan tarik tebal 0,6mm dengan waktu 5detik dan 7detik sebesar 43,81kg/mm dan 107,68kg/mm, sedangkan tebal 1mm sebesar 78,98kg/mm dan 185,32kg/mm. Nilai regangan tebal 0,6mm dengan waktu 5detik dan 7detik sebesar 8,6% dan 5,7%, sedangkan tebal 1mm sebesar 2,3% dan 3,4%.

Page 19 of 31 | Total Record : 310

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