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IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA)
Published by CV. IRA PUBLISHING
ISSN : -     EISSN : 29624290     DOI : https://doi.org/10.56862/irajtma
Core Subject : Science, Engineering,
Automotive Engineering Energy Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) fokus pada artikel ilmiah hasil penelitian dan review dalam bidang teknik mesin dan aplikasinya yang antara lain meliputi: 1. Konversi energi 2. Mekanika 3. Material 4. Manufaktur 5. Lain-lain yang relevan
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 9 Documents
 1 
Search results for , issue "Vol 3 No 2 (2024): Agustus" : 9 Documents clear
Analisis Efisiensi Thermal dan Konsumsi Bahan Bakar pada Burner Kompor SNI Sebagai Dasar Acuan Perencanaan Burner Mesin Stirling Lubis, Rahmadsyah; Jufrizal, Jufrizal; Supriatno, Supriatno; Nurdiana, Nurdiana
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 3 No 2 (2024): Agustus
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v3i2.96

Abstract

This study aims to evaluate the performance of an LPG stove burner by assessing the flame temperature, fuel consumption, burner power, and thermal efficiency. The method employed is an experimental approach using a water boiling technique. The test materials used include 3 kg of LPG gas and water. The equipment utilized includes an SNI-compliant cooking stove, a pot, a digital scale, a rotameter flow meter, a gas regulator and hose, a stopwatch, a UT320D thermometer controller, an NPT stainless steel thermometer, and thermocouple sensor cables. The results show that during the first test with the stove set to the minimum setting, the average flame temperature at the burner reached 559.005 °C, with a maximum value of 589.2 °C. In the second test, with the stove set to the maximum setting, the average flame temperature reached 714.78 °C, with a maximum value of 769.3 °C. Fuel consumption was recorded at 0.391 kg in the first test and 0.545 kg in the second test. The burner power output was 1.754 kW in the first test and 2.225 kW in the second test. The thermal efficiency of the burner was recorded at 50.07% in the first test, increasing to 52.85% in the second test. The measurement and analysis of thermal efficiency and fuel consumption in this study can serve as a crucial guide in designing and developing burners for Stirling engines.
Pengaruh Suhu Dan Kelembapan Terhadap Denyut Nadi Operator Kamar Mesin Di Pabrik Kelapa Sawit PT XYZ Mahyunis, Mahyunis; Raja, Padamulia; Lubis, M Fahmi Fatan
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 3 No 2 (2024): Agustus
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v3i2.106

Abstract

A palm oil mill has several workstations involved in processing palm oil into Crude Palm Oil (CPO). According to the Indonesian Minister of Manpower Decree No. 5 of 2018, the ideal temperature in industrial work areas is 23-26˚C. This study aims to measure the temperature and humidity in the engine room, as well as the operators' pulse rates during rest and work, using a quantitative method. Measurements were taken at 09:00, 12:00, and 15:00 at four observation points. The results showed that the highest temperature reached 32.75˚C, exceeding the standard limit, with an average humidity of >80%, also surpassing the industrial standard (40-60%). These conditions indicate the need for improved ventilation and the use of devices such as exhaust fans and dehumidifiers to reduce temperature and humidity. The installation of real-time temperature and humidity control devices is proposed to enhance working conditions in the engine room.
Variasi Putaran Spindel Mesin Bubut 1000A mempengaruhi Hasil Uji Tarik dan Waktu Pengelasan pada Las Gesek Buntu Lobo, Osmar; Keledar, Taufik; Keliolan, Samlan; Difinubun, Irfan
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 3 No 2 (2024): Agustus
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v3i2.108

Abstract

Welding joints can be achieved by utilizing the heat generated between two surfaces that rub against each other. When two objects are continuously rubbed together, heat energy is likely to be produced. The greater the energy on both surfaces, the stronger the bond that forms at the joint. This study aims to determine the tensile test results from various spindle rotation variations nd how long the friction welding process takes. The method used is experimental, with each variation consisting of three samples, followed by calculating the average. Three spindle speed variations were tested: 700 rpm, 1080 rpm, and 1600 rpm. The results of this study show that a spindle speed of 1600 rpm produces the highest maximum stress of 377.71 MPa, followed by 1080 rpm with a maximum stress of 324.89 MPa, and 700 rpm with an average maximum stress of 268.41 MPa. Spindle speed also affects welding time. The welding time required at 700 rpm is 341.33 seconds, while at 1080 rpm, it is 210.33 seconds. The fastest time is achieved at 1600 rpm, taking only 148.33 seconds. The faster the spindle rotation, the hotter the metal surface becomes, which increases the surface bonding strength. Similarly, spindle speed affects welding time, as higher spindle speeds result in shorter welding times.
Pembuatan Bandul Pemberat Mata Pancing dengan Teknik Pengecoran Logam dari Bahan Timah Solder Menggunakan Cetakan Aluminium Prayoga, M. Angga; Purba, Jon Lihardo; Syahputra, Dwi Fawzi; Hermanto, Tino
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 3 No 2 (2024): Agustus
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v3i2.110

Abstract

Making fishing rod weight pendulums using a metal casting process, namely by pouring molten metal into a mold, to produce the final shape of the product according to what we want. The aim of metal casting activities is to produce fishing rod weight pendulums using permanent aluminum molds, and identify defects in the casting results. The method used is a simple method, the materials used are portable stoves, portable gas cans, can melting furnaces, solder tin, aluminum molds, wire. From this research, it was obtained that casting results had several defects at the end of the casting process, namely the defects that occurred were mold shift defects (deformation defects), and hole defects (porosity defects). Through carrying out research on metal casting activities using simple tools, it was concluded that the results obtained from the metal casting process using aluminum molds were not good because there were many defects in the castings.
Proses Pengecoran Logam Menggunakan Media Cetakan Plastisin Dengan Bahan Timah Sembiring, Perdy; Girsang, Evan Roland; Ginting, Dicka Prasetya; Hermanto, Tino
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 3 No 2 (2024): Agustus
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v3i2.117

Abstract

Metal casting is a manufacturing process that uses molten metal and molds to produce shapes that closely resemble the final geometry of a finished product. The molten metal is poured or pressed into a mold cavity that matches the desired shape or design. The objective of this research is to create a mold pattern using plastilin as a medium, identify the defects in the casting results, evaluate the advantages and disadvantages of using plastilin molds, and determine the shrinkage that occurs in the cast product. The research method applied in this metal casting process is the experimental method, where the mold is made from plastilin. The results show that the casting process led to several defects in the final product. The observed defects include porosity, a rough surface, and shrinkage. The porosity defects, characterized by small holes, were caused by trapped air during the pouring of the molten metal. The rough surface was due to the plastilin mold melting when the molten metal was poured into the mold. It can be concluded from this study that using plastilin as a mold medium is less effective, as the plastilin mold melts during the casting process, resulting in many casting defects. The pouring temperature affects the level of porosity in the casting, where higher pouring temperatures lead to increased porosity.
Pembuatan Gagang Sendok Bayi Menggunakan Teknik Pengecoran Logam Metode Sand Casting Muhammad Rayhan Nurfajrie; Fadly Tamimi; Sipahutar, David Adrianus; Aditya Surya Dinata; Hermanto, Tino
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 3 No 2 (2024): Agustus
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v3i2.119

Abstract

Metal casting is a manufacturing process that is widely used in industry. This research aims to examine the tin solder casting process using sand casting molds to make spoon handles. Soldering tin was chosen because it is often used in the electronics industry to connect components. The method used in this test is Sand Casting using a silica sand mold. The silica sand molds used include disposable molds or Expandable Molds. The results of tin solder casting show that the silica sand sand casting mold produces baby spoon handle products. This research shows that casting tin solder using silica sand sand casting molds produces size error defects which result in dimensional changes between the sample object and the casting product. These dimensional changes indicate that the dimensions of the casting product are smaller than the sample object. Apart from that, there are also holes in the form of air cavities or porosity experienced by casting products.
Rancang Bangun Laser Grafir Portabel Berdaya Rendah Pada Media Kayu Ma’mun, Hisyam; Naufal, Gostsa Khusnun; Mukhtar, Agus
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 3 No 2 (2024): Agustus
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v3i2.122

Abstract

Wood can be increased in value by adding patterns using light from a laser. The types of laser sources which are currently divided into 4 types include: Semiconductor lasers, Solid-state lasers, Fiber lasers, Gas lasers. Each laser generation source has differences in the way the laser light is generated, the laser wavelength produced and the supporting components needed to operate the laser system. In this research, the type of laser source will be selected according to the criteria determined by the researcher. The selection was carried out using the decision matrix method, with the highest number of values obtained from the Semiconductor lasers type laser source. Followed by testing the laser components into the available wood media. The results obtained by the laser system are in accordance with the criteria set by the researchers
Studi Experimental Kinerja Mesin Pencacah Kertas Kapasitas 50 kg/Jam Fauzi, Alfian; Sinaga, Andriansyah; Fadhillah, Yusuf; Hermanto, Tino
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 3 No 2 (2024): Agustus
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v3i2.126

Abstract

The experimental study testing of the performance of a paper chopping machine with a capacity of 50 kg/hour in this research was motivated by the researcher's desire to test the performance of a paper chopper machine with a capacity of 50 kg/hour to find out the results of shredding paper and the capacity limits that can be used to chop paper based on the machine's capabilities. which will be built. This machine was built to reduce existing paper waste which will later be recycled into new paper products. The method used in this test is using an experimental method where the machine that will be used will chop each piece of paper with a shredded paper width of 10mm which will be inserted into the paper chopping machine. From the results obtained, the paper shredding machine was only able to produce 37.8% of the 50 kg/hour of shredded paper. The shredding results produced by the shredding machine did not contain any uncut defects or slanted cut defects produced by the paper shredding machine with a machine production capacity of only 19kg/hour. The maintenance used on paper shredding machines is preventive maintenance.
Simulasi Laju Aliran Udara pada Mesin Oven Pengering Kerupuk dengan Burner Sederhana Berbasis Computational Fluid Dynamics Rohman, Syahrul Mahfudli; Mukhtar, Agus; Burhanudin, Aan
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 3 No 2 (2024): Agustus
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v3i2.134

Abstract

Drying is the process of removing water or separating a relatively small amount of water from a material using heat energy. One method of drying is through oven processing, which aims to reduce the moisture content in materials using an oven. This study aims to analyze the airflow rate in an oven using Computational Fluid Dynamics (CFD) simulation and to examine the effect of temperature variations on airflow rate using CFD simulation. The research method employed is experimental, with data collection techniques including descriptive analysis, involving experiments, simulation results, and documentation. The study found that the simulated airflow rate using Ansys R2 2020 varied with different temperatures. At 70℃, the air velocity ranged from 1.108 m/s to 4.432 m/s, while at 75℃, it ranged from 1.882 m/s to 11.29 m/s. Turbulence occurred at both temperatures, and higher temperatures resulted in faster airflow rates due to reduced air resistance. At 75℃, the crackers achieved optimal dryness, with a weight reduction of 95%. High temperatures can reduce air density which can increase air flow speed due to a decrease in resistance experienced by the air.

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