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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 305 Documents
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Studi Finite Element Analysis terhadap Kekuatan Struktural Dua Desain Roda Kereta Menggunakan ANSYS Workbench 17.2 Davareza, Tinton; Ganda, Andita Nataria Fitri; Wulandari, Diah; Mubarok, Dio Dwi; Firmansyah, Ganda Putra
Jurnal Rekayasa Mesin Vol 10 No 03 (2025): JRM Desember 2025
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jrm.v10i03.73974

Abstract

Roda kereta merupakan komponen vital dalam sistem perkeretaapian yang harus mampu menahan beban operasi secara aman dengan deformasi dan konsentrasi tegangan yang terkendali. Penelitian ini bertujuan untuk mengevaluasi dan membandingkan performa struktural dua desain roda kereta melalui pendekatan Finite Element Analysis (FEA). Analisis dilakukan menggunakan ANSYS Workbench 17.2 dengan memodelkan kontak roda dengan rel menggunakan tipe kontak frictionless agar kondisi batas lebih merepresentasikan kondisi operasi nyata. Material yang digunakan adalah baja karbon ASTM A36 sebagai pendekatan baseline, dengan pembebanan vertikal sebesar 110.362,5 N yang merepresentasikan setengah beban gandar jalur rel kelas I. Parameter evaluasi meliputi tegangan ekuivalen Von Mises, total deformasi, dan safety factor. Hasil simulasi menunjukkan bahwa Model B memiliki performa struktural yang lebih baik dibandingkan Model A, ditunjukkan oleh tegangan maksimum yang lebih rendah (160,82 MPa dibandingkan 195,19 MPa), deformasi maksimum yang lebih kecil (0,029245 mm dibandingkan 0,045356 mm), serta nilai safety factor minimum yang lebih tinggi (1,3742 dibandingkan 1,1322). Perbedaan kinerja ini dipengaruhi oleh variasi geometri, khususnya pada web plate, radius transisi, dan distribusi massa roda. Penelitian ini memberikan kontribusi berupa pemahaman pengaruh geometri terhadap respons struktural roda kereta dan dapat digunakan sebagai dasar evaluasi awal desain roda kereta menggunakan pendekatan FEA.
Analisis Perbandingan Kekuatan Struktural Poros Roda Kereta Api Menggunakan Metode Finite Element Analysis Putra Firmansyah, Ganda; Abdi, Ferly Isnomo; Ganda, Andita Nataria Fitri; Davareza, Tinton; Mubarok, Dio Dwi
Jurnal Rekayasa Mesin Vol 11 No 01 (2026): JRM April 2026 (In Press)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jrm.v11i01.73991

Abstract

This study presents a comparative analysis of the structural strength of two railway axle models using the Finite element analysis (FEA) method. The objective is to determine the effect of geometric variations on stress distribution, total deformation, and safety factor of the railway axle. Three-dimensional models of both axle designs were developed using CAD software and analyzed through the Static Structural module in ANSYS Workbench 17.2. The material used is ASTM A36 carbon steel with a static load of 196,133 N, representing the axle load of a railway system. Simulation results show that Model A exhibits better structural performance, with a maximum Von Mises stress of 136.72 MPa, maximum deformation of 0.10697 mm, and a minimum safety factor of 1.6164. In contrast, Model B produces a higher maximum stress of 163.64 MPa and a total deformation of 0.15741 mm, with a lower minimum safety factor of 1.3505. These differences indicate that geometry significantly affects the load distribution and structural stability of the axle. Overall, Model A is considered more optimal due to its higher stiffness and greater safety margin, making it more suitable for railway axle design applications that require high vertical load resistance and low fatigue risk.
Identifikasi Masalah Air intake Dan Exhaust Serta Uji Dynotest Engine C15 Caterpillar Pada PT Trakindo Utama Surabaya Afero Pranesti, Dennova; Puspitasari, Dewi; Yasa Utama, Firman; Mahendra Sakti, Arya
Jurnal Rekayasa Mesin Vol 10 No 03 (2025): JRM Desember 2025
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jrm.v10i03.74025

Abstract

This study aims to identify problems in the air intake and exhaust systems and to evaluate the performance of a Caterpillar C15 diesel engine through engine dynamometer testing at PT Trakindo Utama Surabaya. The method involved technical observation, dynamometer testing under various load conditions, and analysis of engine performance parameters, including power, torque, engine speed, oil pressure, fuel pressure, and boost pressure. The test results indicate that increasing load leads to proportional increases in power, torque, and boost pressure, while engine speed decreases at high loads without indicating abnormalities in the lubrication and fuel supply systems. Problem identification reveals that performance degradation is mainly associated with the valve mechanism and combustion instability, as indicated by improper valve lash and excessive white smoke from the exhaust system. The application of step-by-step troubleshooting procedures in accordance with manufacturer specifications proved effective in determining appropriate corrective actions and restoring engine performance to optimal conditions. This study provides a solid technical basis for implementing preventive and corrective maintenance strategies for Caterpillar C15 engines in heavy-duty industrial applications.
Analisis Kekuatan Lifting Lug pada Proses Dismantling Chimney Berbasis Finite Element Analysis Hilmansyah, Wisnu; Puspitasari, Dewi; Davareza, Tinton
Jurnal Rekayasa Mesin Vol 10 No 03 (2025): JRM Desember 2025
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jrm.v10i03.74171

Abstract

The dismantling process of industrial chimneys requires a safe and reliable lifting system, in which the lifting lug serves as a critical component for transferring loads to the lifting equipment. Improper lifting lug design may lead to significant safety risks during the lifting of segmented structures. This study aimed to evaluate the structural strength of a lifting lug design used in a staged chimney dismantling process using Finite Element Analysis (FEA). The chimney was divided into three loading conditions representing different segment masses, namely segments 1–5, 6–14, and 15–23. The analysis was conducted using SolidWorks Simulation with ASTM A36 structural steel and static loading assumptions. The evaluated output parameters included Von Mises stress, Von Mises strain, and total deformation. The simulation results indicated maximum Von Mises stresses of 76.85 MPa, 101.8 MPa, and 81.62 MPa for each segment group, all of which were below the material yield strength of 250 MPa. The maximum Von Mises strain remained within the elastic range, with the highest value of 77.97 MPa. The total deformation was relatively small, with maximum displacement values below 0.6 mm for all loading cases. These results demonstrate that the analyzed lifting lug design is structurally safe and suitable for application in staged chimney dismantling operations.
DESAIN MESIN PENGAMBIL TELUR PUYUH OTOMATIS BERBASIS IOT MENGGUNAKAN METODE QFD Mohammad Faisal Arsad, Mohammad Faisal Arsad; Dyah Riandadari S.T.,M.T. , Dyah Riandadari S.T.,M.T.; Arya Mahendra Sakti S.T.,M.T. , Arya Mahendra Sakti S.T.,M.T.; Lailatus Sa'diyah Yuniar Arifianti S.T.,M.T., Lailatus Sa'diyah Yuniar Arifianti S.T.,M.T.
Jurnal Rekayasa Mesin Vol 11 No 01 (2026): JRM April 2026 (In Press)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jrm.v11i01.74177

Abstract

This study aims to design an automatic quail egg collection machine based on the Internet of Things (IoT) using the Quality Function Deployment (QFD) method as the primary approach to translating farmers’ needs into technical machine specifications. Common problems faced by quail farmers include inefficient egg collection time, the risk of egg damage due to manual handling, and the limited availability of automatic technologies to support production processes. Therefore, an automatic machine design is needed to improve productivity, safety, and work efficiency for farmers. The QFD method was used to identify user needs through a questionnaire distributed to 30 quail farmers. The analysis resulted in nine key attributes prioritized in the design, namely cage capacity, cage material selection, frame material selection, frame thickness, roof material, price, cage dimensions, strength factors, and safety factors. These attributes were then translated into technical specifications through the House of Quality (HoQ), which established three priority technical responses: a price range of Rp 6–9 million, cage dimensions (120 × 50 × 23–18 cm), and a frame thickness of 1 mm. The final outcome of the study is an automatic quail cage design with a capacity of 40 birds, developed using Autodesk Inventor in both 2D and 3D formats. The cage structure uses galvanized wire, galvanized hollow steel frames, and a fiber roof. This design is considered capable of meeting farmers’ needs by providing a more efficient, safe, and functionally appropriate automatic egg collection system for small- to medium-scale quail farming.
A Pengujian Vibrasi Pada Pompa Sentrifugal Sebagai Langkah Preventif Untuk Menjaga Stabilitas Kinerja Pompa DWI LESMANA, DIO; NAHRUDIN IBAD, MUHAMAD; MAHENDRA SAKTI, ARYA
Jurnal Rekayasa Mesin Vol 11 No 01 (2026): JRM April 2026 (In Press)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jrm.v11i01.74335

Abstract

Centrifugal pumps are essential equipment in industrial systems that function to continuously transfer fluids. The reliability and stability of pump performance are strongly influenced by mechanical conditions during operation, particularly in rotating components such as bearings. Mechanical disturbances in pumps are often not visually detectable at an early stage; therefore, an effective condition monitoring method is required. This study aimed to evaluate the performance condition of a centrifugal pump through vibration testing as a preventive maintenance approach. The method used was vibration measurement employing a VibXpert 2 device with vibration velocity parameters based on Root Mean Square (RMS) values. Measurements were conducted at the pump bearings in three directions: vertical, horizontal, and axial. The test results showed vibration values of 0.360 mm/s in the vertical direction, 0.815 mm/s in the horizontal direction, and 0.518 mm/s in the axial direction. All measured vibration values were below the threshold limits specified in the ISO 10816-3 standard for group 2 machines with rigid foundations. Based on these results, it was concluded that the centrifugal pump condition remained within a safe category or new machine condition. Vibration testing was proven to be an effective condition monitoring method to maintain performance stability and prevent early failure in centrifugal pumps.
PEMBUATAN CETAKAN SENDOK PUDING DENGAN INJECTION MOLDING DARI MATERIAL POLYLACTIC ACID (PLA) DAN PATI SINGKONG Al Fath Hasby Ash Shiddiqy, Yhun; Ganda, Andita Nataria Fitri; Wulandari, Diah; Arifianti, Lailatus Sa'diyah Yuniar
Jurnal Rekayasa Mesin Vol 10 No 03 (2025): JRM Desember 2025
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jrm.v10i03.74386

Abstract

Plastic is widely used in Indonesia, but its non-biodegradable nature causes accumulation and environmental pollution. As a solution, more eco-friendly bioplastics have been developed. This study aims to produce and analyze pudding spoon molds made from Polylactic Acid (PLA) and cassava starch using the injection molding method. The process began with product and mold design using Autodesk Fusion 360 with product dimensions of 125.5 × 25.2 × 2 mm and mold dimensions of 132 × 60 × 35.6 mm. Mold Flow simulation was conducted to analyze parameters such as fill confidence, visual defects, warpage, air traps, and deflection. The mold was manufactured using CNC machining with aluminum 5052 material. The PLA and cassava starch mixtures were varied, heated at a mold temperature of 160 °C and injection temperature of 190 °C, with a cooling time of approximately 5 minutes. The comparison between simulation and actual results showed dimensional differences for each material variation. The largest deviation occurred at a ratio of 40% PLA and 60% cassava starch, reaching 14.9%, while the best result was obtained at a ratio of 50% PLA and 50% cassava starch with only 0.72% deviation from the initial design. This study indicates that material composition significantly affects the dimensional quality of bioplastic products produced through the injection molding process.
Studi Eksperimental Karakteristik Output Tegangan pada Variasi Susunan Seri-Paralel Modul Thermoelectric Generator (TEG) Rizki Ramadhani, Nazla
Jurnal Rekayasa Mesin Vol 10 No 03 (2025): JRM Desember 2025
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jrm.v10i03.74413

Abstract

The utilization of waste heat energy through Thermoelectric Generator (TEG) technology is a solution in energy conservation, but the optimization of its electrical output is highly dependent on understanding the electrical characteristics and module circuit configuration. The main issue in this study is how the number of modules and the type of circuit affect the voltage produced. This study aims to analyze the effect of the number of TEGs in series and parallel circuits. The method used was experimental with independent variables of the number of modules (2 and 3 units) and the type of circuit in the SP1848 27145 SA type module made of Bismuth Telluride, while maintaining a constant temperature using a hot water source and ice cubes. The results showed that in a series circuit, adding TEGs significantly increased the voltage from around 2.9 volts to 3.3 volts. Conversely, in parallel circuits, the addition of modules did not directly increase the voltage, which tended to remain constant in the range of 1.73 volts to 1.74 volts. The conclusion of this study confirms that series configuration is more effective for achieving voltage increases, while parallel circuits provide output stability that supports the development of efficient thermoelectric power generation systems. Keywords: Bismuth Telluride, Seebeck Effect, Voltage, Thermoelectric Generator.
Analisis pengaruh kecepatan dan lama waktu putaran alat sentrifugal terhadap viskositas susu kedelai maulana, Faiz sahrullah; Sakti, Arya Mahendra; Sofi, Nurul Ainu; Riandadari, Dyah
Jurnal Rekayasa Mesin Vol 11 No 01 (2026): JRM April 2026 (In Press)
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jrm.v11i01.74419

Abstract

This study aims to analyze the effect of variations in rotational speed and centrifugation time on the viscosity and quality of soy milk. The centrifugation process was applied to accelerate the separation of liquid and solid phases (okara) in order to improve the physical quality of soy milk. The research was conducted using an experimental method with three rotational speed variations, namely 700 rpm, 900 rpm, and 1100 rpm, and three centrifugation time variations of 15 minutes, 20 minutes, and 25 minutes. The observed parameter was the viscosity value of soy milk. The results showed that increasing rotational speed and centrifugation time significantly affected changes in viscosity. The lowest viscosity value was obtained at a rotational speed of 700 rpm, amounting to 14,531 cP, while the highest viscosity value was recorded at 1100 rpm, reaching 44,194 cP. The rotational speed of 900 rpm was considered the most optimal condition because it produced a balance in viscosity without causing excessive thickening. This study is expected to serve as a reference for determining optimal centrifugation operating parameters in soy milk processing, particularly for small- and medium-scale applications.
STUDI MIKROSTRUKTUR SERBUK NANO KARBON HASIL PROSES BALL MILLING DENGAN METODE (SCANNING ELECTRON MICROSCOPY) SEM Muhammad Ainur Rosiqin, Muhammad; Nataria Fitri Ganda, Andita; Puspitasari, Dewi
Jurnal Rekayasa Mesin Vol 10 No 03 (2025): JRM Desember 2025
Publisher : Universitas Negeri Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26740/jrm.v10i03.74494

Abstract

This study investigates the microstructural characteristics and elemental composition of nano carbon powder produced through a ball milling process using Scanning Electron Microscopy and Energy Dispersive X-Ray (SEM-EDX). The milling process was conducted using a horizontal ball mill with a milling time of 6 hours and a rotational speed of 140 rpm, selected based on the optimal parameters obtained from prior analysis. Carbon material was milled using a combination of zirconia balls with various diameters to enhance the comminution efficiency. The results indicate that the ball milling process significantly reduced the particle size to the nanoscale, achieving a size reduction value of 89.8%. SEM observations revealed that the carbon particles exhibited thin, flaky, and irregular morphologies, indicating the occurrence of mechanical exfoliation during milling. EDX analysis confirmed that carbon (C) was the dominant element, accompanied by minor elements such as O, Mn, Fe, and Zn, which are attributed to mechanical interactions and sample preparation processes. Overall, the milling parameters of 6 hours and 140 rpm were found to be effective in producing nano carbon powder with favorable microstructural characteristics for potential carbon-based material applications.

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