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Redaksi Jurnal Rekayasa Mesin Jurusan Teknik Mesin Fakultas Teknik, Universitas Brawijaya Jl. MT. Haryono 167 Malang, Jawa Timur Indonesia 65145
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Rekayasa Mesin
Published by Universitas Brawijaya
ISSN : 23381663     EISSN : 24776041     DOI : 10.21776/ub.jrm
Core Subject : Engineering,
Mechanical Engineering
Rekayasa Mesin is published by Mechanical Engineering Department, Faculty of Engineering, Brawijaya, Malang-East Java-Indonesia. Rekayasa Mesin is an open-access peer reviewed journal that mediates the dissemination of academicians, researchers, and practitioners in mechanical engineering. Rekayasa Mesin accepts submission from all over the world, especially from Indonesia. Rekayasa Mesin aims to provide a forum for national and international academicians, researchers and practitioners on mechanical engineering to publish the original articles. All accepted articles will be published and will be freely available to all readers with worldwide visibility and coverage. The scope of Rekayasa Mesin are the specific topics issues in mechanical engineering such as design, energy conversion, manufacture, and metallurgy. All articles submitted to this journal can be written in Bahasa and English Language.
Arjuna Subject : -
Articles 965 Documents
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SMART ANDON SYSTEM BASED ON INDUSTRIAL INTERNET OF THINGS (IIOT) Purnomo , Wahyudi; Maulana, Gun Gun; Suryatini, Fitria; Sunarya, Adhitya Sumardi
Jurnal Rekayasa Mesin Vol. 15 No. 2 (2024)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v15i2.1532

Abstract

In many industrial settings, there are several problems that can arise during the production process. These include machine breakdowns, quality issues, and unexpected delays, which can impact productivity, reduce overall efficiency, and result in lower quality output. In addition, without an effective monitoring system, it can be difficult to identify the root causes of these problems and take appropriate corrective actions.To address these challenges, the implementation of a smart andon system can be highly beneficial. This system enables real-time monitoring of the production process, allowing operators and management to quickly identify and respond to any issues as they arise. By providing instant notifications and alerts, the smart andon system can help reduce downtime, increase productivity, and improve product quality. It also enables more accurate and comprehensive data collection, facilitating better analysis and decision-making by management. Overall, the smart andon system can play a critical role in improving operational efficiency, reducing costs, and enhancing overall competitiveness in today's highly competitive industrial landscape.the implementation of a smart andon system has been shown to improve production efficiency, reduce downtime, and increase overall equipment effectiveness (OEE). The system allows for real-time monitoring of the production process, early detection of problems, and quick resolution of issues through timely alerts and notifications. This can result in significant cost savings for the industry, improved product quality, and increased customer satisfaction.
PENGARUH WATER COOLANT TERHADAP EFEKTIFITAS RADIATOR PADA MESIN TOYOTA KIJANG SERI 4K Elfiano, Eddy; Suripto, Heri; Hastuti, Kurnia; Rahman, Jhonni; Subekti , Purwo; Zinomeza , Eho
Jurnal Rekayasa Mesin Vol. 15 No. 2 (2024)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v15i2.1533

Abstract

The cooling system of an engine utilizes a radiator to regulate the temperature of the coolant, whice absorbs heat from engine to maintain its optimal operating temperature. The aim of the research is to evaluate the effectiveness of radiator using defferent types of water coolants, including gallon water. The study involves using a Toyota Kijang 4K series engine mounted on an engine stand. Data collection includes conducting four rotational variations for each coolant, incluidng galon water. The collected data includes parameters such as inlet and outlet temperature of the coolant, air temperature in front of and behind the radioator, wind speed measurements in those areas, and observation of the coolant flow rate. The findings reveal that coolant C demonstrates the highest average effevctiveness among the different coolant, with a value of 25,28%. Coolant B shows an average effectiveness of 21,98%, while coolant A has an average effectiveness of 21,30%. Galon water exhibts the lowest average effevtiveness, with a value of 18.33%. the radiator’s effectiveness is directly related to the rate of heat transfer, meaning that a higher heat transfer rate corresponds to a higher radiator effectiveness. Thus, based on this study, it can be concluded that coolant C is the most effective coolant in terms of radiator efectiveness and heat transfer.
PERANCANGAN SISTEM KONSTRUKSI MEKANIK 3D PRINTER GEOPOLYMER TYPE CARTESIAN Setiawan, Heri; Nopriyanti, Rani; Adi Soetopo, Antonius; Rusmana, Nandang; Gunawan, Iwan; Pandoe; Budi Harja, Herman; Rahmat Hadi, Faisal
Jurnal Rekayasa Mesin Vol. 15 No. 2 (2024)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v15i2.1543

Abstract

The population growth in Indonesia continues to increase every year, which causes a higher level of demand for civil buildings and houses. 3D concrete printing is an innovative construction method that has recently begun to be applied to the construction industry and has proven to be profitable in terms of optimizing construction time, cost, design flexibility and error reduction as well as being environmentally friendly. The geopolymer 3D printer is a 3D concrete printing machine specifically for extruding geopolymer mortar materials. This study aims to design a mechanical construction system for a 3D printer geopolymer machine. Geopolymer mortar has a unique strength compared to cement mortar and dries faster so it has better molding properties. The design of the cartesian type geopolymer 3D printer machine uses the VDI 2222 design method which consists of planning, conceptualizing, designing, and finishing. Based on this design method, a printing area of 5m x 5m x 3m is designed with a maximum printing speed of 100 mm/s. The results of this design meet the demands and are stated to be technically good in static calculations.
RANCANGAN TRACKING MATERIAL SYSTEM UNTUK PELACAKAN DAN PEMINDAHAN KOMPONEN ANTAR GUDANG (STUDI KASUS PT. PINDAD) Afif, Ilham; Pratikto; Sumantri, Yeni
Jurnal Rekayasa Mesin Vol. 15 No. 2 (2024)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v15i2.1544

Abstract

This journal presents the development of the Material Tracking Application at PT. Pindad. During the assembly process, some components may be rejected due to defects or non-compliance with other components from different suppliers. It is difficult to identify the origin of rejected components due to the lack of rejection data from each supplier. This issue led to the development of applications that can trace the origin of components by attaching QR codes to packages. Scanning the QR code activates the Quality Function to identify the origin of the component. QR codes were chosen because of their cost-effectiveness, low operational costs, and ease of reading compared to other Automatic Identification Procedure (Auto-ID) technologies. Another problem is the administrative process when moving parts/components from the component warehouse to the production warehouse. The recording process still uses paper-based documentation which is time-consuming and error-prone. Therefore, QR codes are also used to simplify and speed up the recording process by the security function. From designing web-based applications which are then deployed and run on Google's cloud services. The researcher then carried out a testing process with 2 stages, namely the process of verification and validation. It was found that the Material Tracking Application went well according to the researchers' expectations. There are still many opportunities for the development of this Material Tracking Application. Mainly development using other Auto-ID and different case studies in the world of manufacturing.
PLANNING AND SCHEDULING IN AUTOMATIC TRAIN SIGNALING MAINTENANCE: A REVIEW Raharjo, Rachmad Dwi; Wicaksono, Satrio; Budiwantoro, Bagus
Jurnal Rekayasa Mesin Vol. 15 No. 2 (2024)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v15i2.1552

Abstract

The development of automatic railway signaling systems that use moving block systems has grown rapidly. The moving block signaling system, which is a development of the fixed block system, has functions such as automatic control, shortening headways, increasing operating capacity, and railway safety. The Technology used in the moving block signaling system must be reliable and suitable for passenger comfort and safety. So, an effective and efficient maintenance method is needed. Planned and scheduled maintenance prevents disruption and gives minimum maintenance costs. The condition-based maintenance, on the other hand, is the right maintenance for an automatic train signaling system because it uses a data-driven model so that it can support decisions in determining maintenance strategies, and maintenance can be optimized using the Reliability, Availability, Maintainability, and Safety (RAMS) method with one of the Reliability Centered Maintenance (RCM) analysis tools. This optimization can increase operational safety, maintenance cost efficiency, and asset availability. In addition, another advantage of this RCM method is that it can identify critical components that require maintenance priority, so that maintenance resources can be optimized.
PENGARUH JUMLAH ISIAN PROPELAN TERHADAP KECEPATAN PROYEKTIL MUNISI KALIBER 40X46 MM NON-LETHAL Sanjiwani, Yudistira; Pratikto, Pratikto; Irawan, Yudy Surya
Jurnal Rekayasa Mesin Vol. 15 No. 2 (2024)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v15i2.1564

Abstract

Many kinds of non-lethal ammunitions are developed in the last fourty years. The 40x46 mm Non-lethal ammunition is one of several ammunitions ready to be used in riot control. This type of ammunition can be used to subdue the target by implementing impact force. When developing non-lethal ammunition, it should be considered that the ammunition has adequate projectile velocity to ensure that the impact will produce sufficient pain to immobilize the target without risk of permanent injury. Projectile velocity is affected by the propellant weight and projectile weight. Therefore, a study to understand the effect of propellant charge weight on projectile velocity was done experimentally. This experiment was done by preparing several variations of propellant charge weight which were 0.150 gram, 0.200 gram, 0.250 gram, 0.300 gram and 0.350 gram. The desired output of this study is to obtain the correct amount of propellant charge weight to produce projectile velocity in accordance with the 40x46 mm Non-Lethal ammunition specification. The conclusion of this study is that Variation C ammunition with propellant charge weight of 0.250 gram is the closest variation to achieve nominal projectile velocity of 75 m/s. The exact range of propellant charge weight that can be used as production guidelines in order to comply with the product specification is between 0,228-0,280 grams APS350.
KARAKTERISASI SIFAT FISIK, KIMIA, DAN MEKANIK SERAT SELULOSA ALAMI DARI AMPAS TEBU Andrianto, Sis Nanda Kus; Fitri, Femiana Gapsari Madhi; Wijayanti , Widya
Jurnal Rekayasa Mesin Vol. 15 No. 2 (2024)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v15i2.1567

Abstract

The demand for cellulose fibers is increasing due to their eco-friendly nature. Natural fibers have special qualities that make them excellent for a wide range of fibrous applications, including composites, nanomaterials, biomaterials, textiles, and conductive carbon, which are the main causes of the increased demand. This study uses sodium hypochlorite (NaOCl) and sodium hydroxide (NaOH) to chemically treat sugarcane bagasse fibers. The highest tensile strength, 532.12 MPa, was found in the fibers treated with both NaOCl and NaOH. Hemicellulose, lignin, and other contaminants were removed through chemical processing, according to a Fourier transform infrared (FTIR) study. According to the SEM pictures, the NaOCl and NaOH-treated fibers' surfaces improved in cleanliness and roughness. The NaOCl and NaOH treatments showed promise for creating nanocellulose from bagasse fibers and for strengthening composites.
FEASIBILITY STUDY OF GROUND ENHANCEMENT MATERIAL (GEM) PRODUCTION STARTUP AS AN IMPORT SUBSTITUTION BASED ON TECHNOLOGICAL AND FINANCIAL ASPECTS Jakah, Jakah; Priswantoro, Andis; Farakhan, Putra Zaki; Syah, Herwin; Sumarnadi, Eko Tri; Herawan, Wawan
Jurnal Rekayasa Mesin Vol. 15 No. 2 (2024)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v15i2.1582

Abstract

Ground Enhancement Material (GEM) plays a crucial role in lightning protection systems by effectively channeling lightning voltage into the ground. Given Indonesia's reliance on imports, it is essential to explore domestic alternatives for GEM production. This study assesses the feasibility of establishing a local GEM production startup in Tasikmalaya, West Java, based on technological and financial aspects. The analysis assumes a production capacity of 300 kg per day, an interest rate of 10%, and an economic life of 10 years. The technical aspect includes considerations such as business location, raw materials, and process/equipment technology. The financial aspect employs the Net Present Value (NPV), Internal Rate of Return (IRR), and Payback Period (PP) calculation approaches. Ensuring an adequate supply of raw materials is crucial for long-term sustainability, maintaining product quality, and managing production costs. Financially, the project yields a positive NPV value (IDR 599,655,405), an IRR exceeding the interest rate (17.9% > 10%), and a relatively short investment payback period (5 years and two months). Based on consideration of the technical and financial aspects, it is evident that the GEM production startup is a feasible and profitable investment.
PENGARUH PENAMBAHAN RADIUS PADA KECEPATAN DAN FREKUENSI SLUG DI DAERAH DOWNSTREAM T-JUNCTION MINICHANNEL Hananto, Leila Hanjani; Indarto; Untung Surya Dharma; Deendarlianto
Jurnal Rekayasa Mesin Vol. 15 No. 2 (2024)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v15i2.1586

Abstract

Multiphase flow channel is commonly applied in various industrial contexts, including lab-on-a-chip, nuclear power plants, microelectronics cooling systems, and chemical microreactors. Equipment ranging from mini to micro sizes plays a vital role in enhancing heat and mass transfer processes during the mixing of two or more phases. Non-uniform phase distribution during the passage of a two-phase flow through a T-junction can cause performance issues in the downstream region. A problem arising from the use of T-junctions is the occurrence of slugs. An experimental study was conducted to investigate the effect of varying bend radius on the flow characteristics in the downstream region of a T-junction minichannel, such as slug velocity and frequency. The slug velocity was researched in the downstream region of the horizontal minichannel T-junction. The working fluid used was air as the gas phase and water. The findings indicate that there is a linear relationship between the superficial velocities of air and water and the corresponding slug velocity in the downstream area of the horizontal minichannel T-junction, as observed through the utilization of a high-speed camera and MATLAB program for image processing. It has been observed that the local velocity within the channel increases as the corner radii increase towards the downstream region.
PIROLISIS MENGGUNAKAN SCREW SEBAGAI PRESSURE DROP DAN SIRIP PADA KONDENSOR Pane, Erlanda A; Rahardjo, Stevanus Budi; Ismail, Ismail
Jurnal Rekayasa Mesin Vol. 15 No. 2 (2024)
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/jrm.v15i2.1591

Abstract

The main factor that can determine the pyrolysis reaction is reactor type. However, the operational system of the pyrolysis reactor has a problem due to the low energy supply and low thermal conductivity of plastic. In addition, the particle agglomeration phenomenon occurs due to the presence of a thin layer due to the natural adhesive effect. This research made the development of the reactor design by the addition of a reactor section. The addition of a screw scrolls as a pressure drop system and fin parts on the condenser becomes the novelty. The aims of adding some sections are to reduce the particle agglomeration phenomenon and increase the quantity of syngas-pyrolysis oil from the system. The methodology is divided into design, manufacture, and pyrolysis experiments. This system can produce more pyrolysis oil compared to systems that use catalysts. The oil yield produced reached 88% at a target temperature of 450°C.

Page 59 of 97 | Total Record : 965

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