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Jurnal Rekayasa Mesin
Published by Universitas Sriwijaya
ISSN : 14116553     EISSN : 23387009     DOI : https://doi.org/10.36706/jrm.v21i1
Core Subject : Science, Engineering,
Aerospace Engineering Automotive Engineering Control & Systems Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering
Jurnal Rekayasa Mesin (JRM) Jurusan Teknik Mesin Universitas Sriwijaya adalah sebuah jurnal blind peer-review yang didedikasikan untuk publikasi hasil penelitian yang berkualitas dalam bidang ilmu Teknik Mesin namun tak terbatas secara implisit. Semua publikasi di Jurnal Rekayasa Mesin ini bersifat akses terbuka yang memungkinkan artikel tersedia secara bebas online tanpa berlangganan apapun
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 63 Documents
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Peningkatan Kemampuan Mesin Bubut untuk Pemesinan Proses Freis dengan Menambahkan Alat Bantu Cekam Dimas wicaksono; Muhammad Yanis; M. A. Ade Saputra
Jurnal Rekayasa Mesin Vol. 23 No. 2 (2023): Jurnal Rekayasa Mesin
Publisher : Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jrm.v23i2.348

Abstract

Fixtures are made and designed specifically to help the manufacturing process. The function of this fixture is to save costs, ensure thorough product quality, reduce waiting time and increase production results. In this research, efforts were made to increase the productivity capabilities of lathe machines by adding a fixture. This fixture is used to carry out face milling and drilling processes on flat surface workpieces. This additional equipment is installed on the lathe to replace the tool post and its function is to grip the workpiece to be machined. The cutting tool is held on the lathe spindle directly or using a special spindle shaft. With this condition, where the workpiece experiences a feed motion and meanwhile a cutting motion by the cutting tool, the process is the same as on a milling machine. The fixture made is as expected, which based on accuracy testing and running tests shows that machining errors and deviations are within the standardized range of 0.4 to 25 µm.
Analisis Perawatan pada Pipa Superheater di Unit Boiler 1 menggunakan Metode Risk Based Inspection Ozkar F. Homzah; Ella Sundari; Vera Octavia
Jurnal Rekayasa Mesin Vol. 23 No. 2 (2023): Jurnal Rekayasa Mesin
Publisher : Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jrm.v23i2.404

Abstract

The failure of the superheat pipe is one of the important problems that often occur in steam power plants, this is caused by thinning on the surface due to abrasion by silica sand contained in the combustion gas flow continuously during operation. Based on the failures that occurred in the boiler pipes in the 3x10 MW TE unit, this is very risky and has a major effect on electricity production. In addition, this also causes considerable financial problems due to downtime. In this study, we used the risk-based inspection method to provide an overview of the inspection schedule plan. As a result, based on the API 581 standard, the probability of failure is category 5 and the financial risk is level C. Therefore, the risk level of the superheat is medium-high. Conditionally, we expect the power plant to run the inspection schedule 27 days after the failure report based on the thickness measurement.
Analisis Efek Tortuositas pada Heatsink Berpori terhadap Perpindahan Panas Konveksi Alami Imam Akbar; Ahmad Malik Abdul Aziz; Hariman Al Faritzie; Dewi Rawani
Jurnal Rekayasa Mesin Vol. 23 No. 2 (2023): Jurnal Rekayasa Mesin
Publisher : Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jrm.v23i2.439

Abstract

This research aims to analyze the effect of tortuosity porous heatsink on natural convection heat transfer. Heatsink plays a crucial role in dissipating heat from electronic components, and optimizing heatsink design is essential for effective and efficient thermal management. In this study, heatsink structures including splitP, diamond, gyroid, and pin were created using generative design methods, and the relationship between tortuosity and heatsinks thermal performance was investigated through Computational Fluid Dynamics (CFD). The results show that an increase in tortuosity leads to a significant increase in surface area and pressure drop, with values ranging from 9298.48-12711.93 mm2 and 0.08701-0.09474 Pa, respectively. Additionally, tortuosity also exhibits a strong linear correlation with the Nusselt number, with value R2=0.88. As tortuosity increases, the Nusselt number decreases significantly from 18.04-9.90. In this research, we conclude that tortuosity is an important parameter that affects heatsink performance, and the TPMS structure we developed is a promising heatsink design candidate for thermal management devices. However, a balance needs to be sought between surface area, pressure drop, overall heat transfer, and other parameters such as pore size and interconnectivity to achieve optimal heatsink performance.
Perancangan Lemari Pendingin Sayuran dengan Media Es Batu dan Kontrol Kelembaban Abdul Muin; Dewi Rawani; Rita Maria Veranika; Imam Akbar
Jurnal Rekayasa Mesin Vol. 23 No. 2 (2023): Jurnal Rekayasa Mesin
Publisher : Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jrm.v23i2.441

Abstract

This study aims to design a vegetable refrigerator that uses ice cubes and humidity control. This refrigerator is designed to preserve vegetables that are not sold out in village stalls. This study uses an experimental method by testing three types of vegetables, namely spinach, tomatoes, and potatoes. The test was carried out for 10 hours by comparing the condition of the vegetables stored inside and outside the refrigerator. The results showed that the refrigerator could lower the room temperature to 19.7 °C and 21.5 °C for the three types of vegetables. The cooling rate that occurred for spinach was 3.342 °C/hour, for tomatoes 2.54 °C/hour, and for potatoes 2.285 °C/hour. The product weight loss that occurred was greatest in spinach, which was 31 grams, while the smallest was in potatoes, which was 2 grams. The relative humidity achieved ranged from 61% to 72%. In terms of freshness and texture, spinach showed the most significant change, while tomatoes and potatoes still maintained their quality. This study proves that vegetable refrigerators with ice cubes and humidity control can be used as an alternative appropriate technology for vegetable preservation in village stalls.
Dinamic Simulation Solidworks pada Perancangan Mesin Brush Sander Uriansyah, Faridz Ashar; Rhohman, Fatkur
Jurnal Rekayasa Mesin Vol. 24 No. 1 (2024): Jurnal Rekayasa Mesin
Publisher : Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jrm.v24i1.449

Abstract

This research aims to analyze the strength and response of the frame of the brush sunder machine to forces and loads. The research method involves using the SolidWorks application with an angle iron frame and ASTM 36 material. The research results include critical data such as stress, displacement, and safety factor. Applying forces and loads to the frame through the SolidWorks model allows for a thorough evaluation of the structural strength and its response. Stress data provides an overview of the maximum load, displacement identifies deformation, and the safety factor indicates the structural reliability level. This study is expected to contribute to a deeper understanding of the performance and safety of the brush sunder machine frame under various operational conditions.
Analisa Simulasi Kekuatan Rangka pada Mesin Brush Sander menggunakan Aplikasi Solidwork Fardana, Fendi; Rhohman, Fatkur
Jurnal Rekayasa Mesin Vol. 24 No. 1 (2024): Jurnal Rekayasa Mesin
Publisher : Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jrm.v24i1.450

Abstract

This research aims to analyze the strength and response of the brush sunder machine frame to forces and loads. The research method utilizes the SolidWorks application with a frame made of angle iron and ASTM 36 material. The research results encompass critical data such as stress, displacement, and safety factors. The application of forces and loads on the frame through the SolidWorks model enables a thorough evaluation of the structural strength and its response. Stress data provides an overview of maximum loads, displacement identifies deformations, and safety factors indicate the level of structural reliability. The results show values of deformation at 1.09 mm, stress at 4.8 N/m, Strain at 4.2, and FOS at 1.87. These values are within safe limits. This research is expected to contribute to a better understanding of the performance and safety of the brush sunder machine frame under various operational conditions.
Desain dan Simulasi Poros Mesin Brush Sander dengan Tipe Dua Poros Brush Arifirnando, Lucky; Rhohman, Fatkur
Jurnal Rekayasa Mesin Vol. 24 No. 1 (2024): Jurnal Rekayasa Mesin
Publisher : Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jrm.v24i1.451

Abstract

This research focuses on the design and simulation of a brush sander machine shaft with a two-shaft brush type. The machine shaft is a critical component in a brush sander machine, and efficient design is the key to improving machine performance and durability. Simulations were carried out to analyze the distribution of force, torque, von Mises stress, deformation and safety factors on the shaft. Ductile Iron is used as the shaft material with a yield strength of 5.51485e+008 N/m^2. The brush model 2 simulation results show a maximum Von Mizes Stress of 2.955e+002 N/m^2 and a minimum of .709e+000 N/m^2. Maximum displacement is .567e-008 mm and minimum is 0.000e+000 mm, with the highest value at the shaft end in red. Simulated maximum strain 1.151e-009 and minimum 5.726e-011. The maximum factor of safety (FOS) is 1.171e+008 and the minimum is 1.866e+006, indicating a safe model with criteria below 10. This research provides in-depth insight into the mechanical characteristics of the shaft, allowing designers to make design adjustments to improve the efficiency and reliability of brush sander machines with two brush shafts.
Studi Kelayakan Investasi Batching Plant menggunakan Fly Ash sebagai Pengganti Semen di Kota Palembang Dwi Utama, Hakim Abdurrahim; Susanti, Betty; Saloma, Saloma
Jurnal Rekayasa Mesin Vol. 24 No. 1 (2024): Jurnal Rekayasa Mesin
Publisher : Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jrm.v24i1.516

Abstract

Cement processing increases CO2 pollution by up to 6%, giving rise to innovation in using fly ash because it can be used as an additive material for good quality concrete. Concrete production using a batching plant requires large investment costs. This research aims to analyze the feasibility of financial investment to build a batching plant that processes concrete mixed with fly ash and compare it with conventional concrete without fly ash in Palembang City. The study shows the NPV>0, IRR>9%, and BCR>1, which means these two investments are feasible. However, the payback period for conventional concrete is 3 years while concrete with fly ash is 3.5 years. BEP for conventional concrete and fly ash concrete reached the break-even point in the 8th year. In the 10th year of fly ash concrete production, there was a significant surplus. The environmental aspect shows that concrete waste using fly ash is safe because it can reduce cement use by up to 55%. The research results show that adding fly ash reduces raw material costs. This investment is declared feasible from a financial aspect because it has the potential to obtain benefits.
Perancangan Aplikasi Pengujian Produk Berbasis Web; Studi Kasus pada Program Studi Program Profesi Insinyur dari Unsur Tenaga Pendidik Universitas Sriwijaya Nugrasyah, Amrillah; Berniko , Muhammad Aldy; Mohruni, Amrifan Saladin
Jurnal Rekayasa Mesin Vol. 24 No. 1 (2024): Jurnal Rekayasa Mesin
Publisher : Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jrm.v24i1.527

Abstract

Quality Assurance is a term that refers to an evaluation process that includes monitoring and guaranteeing the quality of something, one of which is Recognition of Past Learning (RPL). In this case, RPL is one of the educational pathways at Sriwijaya University in the Engineer Professional Study Program (PSSPI). This study aims to produce a product testing application for RPL student assessment that is not yet available. There are several tools and software used to design this application, such as Microsoft Visual Studio Code, MySQL, PHP, CSS, HTML, REST API, XAMPP, and also Laravel. This application is designed using the Waterfall method, meaning the next design process cannot be carried out if the previous design process has not been completed. There are 5 stages in this waterfall method, namely requirements definition, system and software design, implementation and unit testing, integration, and system testing, and operation and maintenance.
Analisa Variasi Jumlah Uap terhadap Efisiensi Ketel Uap di PT. Bukit Barisan Indah Prima (BBIP) Grup Kabupaten Muaro Jambi Firdaus, Aneka; Gunawan, Gunawan; Saputra, M. A. Ade; Abror, Rifki
Jurnal Rekayasa Mesin Vol. 24 No. 1 (2024): Jurnal Rekayasa Mesin
Publisher : Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jrm.v24i1.528

Abstract

Power plant steam that is in palm oil factory PT. Bukit Barisan Indah Prima (BBIP) Group only use 1 unit of a steam boiler with type Takuma N-750 SA water tube boiler. On their work this final analysis variations in the quantity of steam against efficiency boiler PT. Bukit Barisan Indah Prima (BBIP) grup Muaro Jambi District, Jambi. In this research used method of direct to know the efficiency boiler on various variations in the quantity of steam. The results from the study efficiency lowest acquired at the number of steam 14 ton/hour and the amount of fuel used of 2.730 kg/hour then efficiency boiler of 83,87 % and efficiency highest acquired at the number of steam 18 tons/hour and the amount of fuel used of 3.510 kg/hour then efficiency boiler of 85,14 %.

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