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Perum Graha Garuda Mas Blok II No. 39 Dusun V Desa Sigara-Gara Kecamatan Patumbak Kabupaten Deli Serdang Provinsi Sumatera Utara, Indonesia, Kode Pos: 20361.
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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 157 Documents
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Manufaktur Heater Menggunakan Bahan Pipa Steam untuk Mesin Stirling Tipe Gamma Skala Kecil Kurniawan, Eprian; Jufrizal, Jufrizal; Nurdiana, Nurdiana
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 3 No 3 (2024): Desember
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v3i3.155

Abstract

The design and manufacturing of a heater for a Gamma-type Stirling engine on a small scale require careful consideration of key factors to ensure thermal efficiency and optimal performance. This study utilized AutoCAD software to design the heater precisely according to operational requirements. The heater functions as a critical component that transfers heat from the source to the working fluid positioned at the front of the Stirling engine. The manufacturing process employed carbon steel, chosen for its ability to withstand high temperatures and ensure even heat distribution. Test results demonstrated that the manufactured heater could achieve an average temperature of 484.50 °C, reflecting its stability and optimal heat distribution during operation. This stability is a crucial indicator of the heater's thermal efficiency and reliability in supporting the Stirling engine's performance. The study confirms that the applied design process, material selection, and manufacturing techniques successfully produced a heater that meets the design specifications. Thus, this research significantly contributes to developing heater technology for small-scale Stirling engine applications.
Pengaruh Kecepatan Putaran dan Pemakanan terhadap Permukaan Baja ST 41 pada Mesin Bubut Akhmadi, Amin Nur; Usman, Mukhamad Khumaidi; Sanjaya, Firman Lukman
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 3 No 3 (2024): Desember
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v3i3.157

Abstract

This study discusses the effect of feed rate and machine rotation speed on the surface roughness of ST 41 steel in the flat turning process. The aim is to determine the relationship between variations in rotation speed (100 rpm, 300 rpm, and 500 rpm) and feed rate on the final surface results of the workpiece. The method involves cutting tests on ST 41 steel specimens with a diameter of 25 mm and a length of 400 mm with various rotation speed variations. The results show that at low rotation speed (100 rpm), the surface of the workpiece tends to be rough. The surface becomes better at medium speed (300 rpm), while at high speed (500 rpm), the surface results are smoother. These findings indicate that increasing rotation speed contributes to a decrease in surface roughness. Thus, higher rotation speeds can improve the quality of turning results.
Analisis Hasil Pembentukan Kayu Billiard Menggunakan Mesin Bubut dan Mesin Router Relvin; Rosehan, Rosehan; Lubis, Muhammad Sobron Yamin
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 3 No 3 (2024): Desember
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v3i3.158

Abstract

Making billiard sticks is a production process that requires high precision to produce quality products. This research aims to analyze the comparative performance of various cutting tools in the turning process for making billiard sticks. Proper cutting tools are essential in the pool cue manufacturing industry to achieve precise and quality results. This research uses two types of processes: the turning and the routing machine processes. The turning process is carried out on rosewood/snorkelling (Dalbergia latifolia) woodworkpieces, which will be used as billiard sticks. This research aims to evaluate dimensional accuracy and production process time. The turning process is carried out by varying the cutting speed parameters and feed depth. This research focuses on optimizing lathes' use to produce stick dimensions that comply with international standards. The study showed that turning tapered wood in a lathe to make billiard sticks took longer (376.2 seconds) than using a router machine (225.6 seconds).
Tindakan Corrective Maintenance pada Penggantian Poros Elektro Motor yang Patah Akibat Beban Berlebih di Mesin Separator PT. Hutahaean Karti, Karti; Nainggolan, Geo Peterson
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 3 No 3 (2024): Desember
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v3i3.159

Abstract

This research discusses the replacement of a broken motor shaft due to overload as a Corrective Maintenance action on the separator unit at PT. Hutahaean, Tapioca Factory. The objective of this research is to understand the Standard Operating Procedure (SOP) for replacing a broken motor shaft and to apply preventive steps to avoid further damage to the electric motor in the separator unit. The electric motor plays a crucial role in driving the separator machine, especially in the separation process of tapioca starch. Overloading led to the breakage of the motor shaft, disrupting the production flow. This study demonstrates that effective Corrective Maintenance can restore the machine's optimal function and reduce production downtime. The findings also highlight the importance of routine maintenance of machine components to prevent future severe damages.
Perancangan Mesin Hot Press Untuk Pengolahan Limbah Sampah Plastik Menjadi Produk Plastic Sheet Simangunsong, Helfran; Hermanto, Tino; Purba, Tiochanra
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 3 No 3 (2024): Desember
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v3i3.169

Abstract

Plastic waste is a critical issue underlying the design of the hot press machine. This study aims to design a hot press machine capable of processing plastic waste into plastic sheet products and evaluate the safety and operational aspects of the machine. The method employed involves designing modelling using SolidWorks software and collecting data on the machine's design specifications. The results indicate that (1) the critical load capacity of the hollow steel frame reaches 4019.23 kN, (2) the spring pressure is 100,000 Pa, (3) the jack pressure is 5.3 MPa, (4) the electrical power consumption of the hot press machine is 2.22 kW, and (5) the electrical power for 10 cartridge heaters is 1,472.42 Watts. The mould pressure is 2.20 kN with a surface area of 4.16 cm², a plastic sheet thickness of 10 mm, and a 950 kg/m³ density. In conclusion, the machine frame dimensions are 600 mm x 600 mm x 1200 mm, utilizing 40 mm x 40 mm hollow steel profiles. Safety evaluations emphasize the importance of using personal protective equipment (PPE), adhering to operational procedures, and preparing for emergencies.
Proses Penggantian Superheater Tube Pada Takuma Boiler N-900 R Fathon'D, Ar Rasyid; Sutanto, Hadi; Hermanto, Tino
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 3 No 3 (2024): Desember
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v3i3.173

Abstract

This research aims to provide a detailed guideline for the replacement process of superheater tubes in the Takuma Boiler N-900 R. The superheater tube is a critical component in a boiler that increases the temperature of the steam exiting the boiler to achieve higher temperatures. Superheaters have been utilized since the early 20th century, coinciding with the initial use of steam engines. The research employed direct observation to analyze the causes of failure in the superheater tubes. The primary objective is to present the necessary processes and steps for replacing superheater tubes. The findings indicate that the primary cause of failure in the superheater tubes is overheating, necessitating their replacement. The replacement process involves several stages, including disassembling old superheater tubes, installing new ones, and testing hydrostatic and steam. The results of this replacement process show improved efficiency in the superheater and prevention of further failures in the superheater tubes.
Desain Lower Arm Model Double Wishbone Mobil Listrik PHB Menggunakan Finite Element Metode Budi, Sigit Setijo; Hendrawan, Andre Budhi; Usman, Muhammad Khumaidi
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 3 No 3 (2024): Desember
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v3i3.139

Abstract

The weight of a car's parts can be reduced by using materials such as aluminum. The lower arm is the main component of the suspension system, usually found at the front of the suspension in both Macpherson and Double Wishbone systems. There are AA6061 and malleable cast iron materials, where AA6061 is made from aluminum alloy, and the malleable cast iron material is made from steel alloy. Both are different in terms of material but almost similar in terms of material properties. The research method uses FEM assisted by Solidworks software and looks at the loading, stress and strain. The results of the research were that the material from AA6061 was better but more expensive if made in smaller quantities.
Analisis Kinerja Mesin Pencacah Plastik Berbasis Pisau Berputar Nasution, Heri Prinando; Ramadhan, Alfian; Hermanto, Tino; Iswandi, Iswandi; Darianto, Darianto
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 3 No 3 (2024): Desember
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v3i3.145

Abstract

Plastic waste is one of the most significant contributors to waste production in Indonesia, reaching 65.2 million tons per year. Efforts to reduce waste volume are carried out by shredding plastic into smaller sizes to facilitate recycling. This study aims to analyze the production capacity, quality, and efficiency of a rotating blade-based plastic shredding machine and to determine the necessary maintenance to sustain its long-term performance. The method employed is a quantitative approach, which involves recording and analyzing data from machine tests using 10 samples of HDPE and PP plastic. The results indicate that the machine's production capacity for HDPE plastic is 3.43 kg/min, while for PP plastic, it is 1.42 kg/min. The study concludes that the rotating blade-based plastic shredding machine is effective in processing plastic waste, with results varying based on the type of plastic material.
Perhitungan Panas pada Pemanasan Preform PET di Unit Heater Blow molding PT. Sinar Sosro Saragih, Koko Pratama; Tarigan, Ratna Kristina; Putri, Jaihy Sabana
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 3 No 3 (2024): Desember
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v3i3.154

Abstract

Blow molding is a bottle molding process aimed at forming PET preforms into PET bottles. This process is highly influenced by heat, which functions to soften the PET preform to facilitate its formation in the subsequent stages. Therefore, temperature control is a critical factor in this process. The energy balance method was used to calculate the heat required during the preform heating process in the heater unit. The results showed that the heat required during the preform heating process in the heater unit was 6,441,218.72 cal/hour, 6,531,114.65 cal/hour, and 6,486,129.51 cal/hour. The heat transfer efficiency of the heater for the preform was 90.74%, 92.00%, and 91.37%, respectively.
Studi Eksperimental Kalor Biodiesel dari Minyak Goreng Limbah Sembiring, Kiki Syahbana; Idris, Muhammad; Hasibuan, Yetti Meuthia; Harahap, Uun Novalia; Darianto, Darianto
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 3 No 3 (2024): Desember
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v3i3.160

Abstract

The ever-increasing global energy demand necessitates the development of environmentally friendly and sustainable alternative fuels. Biodiesel is a potential solution, mainly when produced from used cooking oil through the transesterification process. This study aims to evaluate the effect of reaction time on the calorific value of biodiesel using the linear regression method. The calorific value was chosen as the primary parameter because it reflects the energy produced by the fuel. The study analyzed experimental data correlating the transesterification reaction time with the biodiesel calorific value. The results showed that the optimal reaction time was 80 minutes, yielding the highest calorific value of 41.35 MJ/kg, exceeding the ASTM D6751 standard. However, the effect of reaction time on calorific value was not statistically significant, with a P-value of 0.67 and a regression coefficient of 0.02. The decrease in calorific value after 80 minutes is likely caused by overreaction, reducing efficiency. The findings indicate that reaction time is not the sole factor influencing biodiesel calorific value. Future research recommendations include incorporating variables such as reaction temperature and raw material molar ratio to enhance model accuracy. This study is expected to provide a foundation for developing high-quality biodiesel that meets international standards.

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