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Pramuko Ilmu Purboputro
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Majalah Teknik Mesin
Published by Universitas Muhammadiyah Surakarta
ISSN : 14114348     EISSN : 25414577     DOI : -
Core Subject : Science, Engineering,
Automotive Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology
Media Mesin: Majalah Teknik Mesin is published by Mechanical Engineering Department, Faculty of Engineering, Universitas Muhammadiyah Surakarta, Indonesia. Media Mesin: Majalah Teknik Mesin is an open-access peer-reviewed journal that mediates the dissemination of academicians, researchers, and practitioners in mechanical engineering. Media Mesin: Majalah Teknik Mesin accepts submissions from all over the world, especially from Indonesia. Media Mesin: Majalah Teknik 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 Media Mesin: Majalah Teknik Mesin is specific topics issues in mechanical engineering such as: Energy Conversion and Management Thermofluids Material and Manufacturing, and Design and Structure All articles submitted to this journal can be written in Bahasa Indonesia and English. The journals will be published two times a year namely in January and July.
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 34 Documents
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GEOMETRIC DESIGN OPTIMIZATION OF SUBMERSIBLE PUMP CASING FOR IMPROVED STRUCTURAL STRENGTH AND EROSION RESISTANCE UNDER FLUID FLOW USING FEA AND CFD APPROACHES Dede Buchori Muslim; Meri Rahmi; Muhammad Rifky Ramdhani; Reza Yadi Hidayat; Muhammad Nahrowi; Antonius Adi Soetopo; Asep Indra Komara; Paulus Mudji S
Media Mesin: Majalah Teknik Mesin Vol. 27 No. 2 (2026)
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/mesin.v27i2.16506

Abstract

The structural performance of submersible pump components, particularly the casing, is influenced by its geometric configuration and the impact of fluid flow. Premature damage to submersible pump casings in mining environments is often triggered by the interaction of fluid flow with erosive solid particles. This study analyzes the effect of variations in the internal geometry of the submersible pump casing on the durability of FCD 700 cast iron materials. The method used in this study is the integration of Computational Fluid Dynamics (CFD) and Finite Element Analysis (FEA). The reverse engineering process to obtain a 3D model of the existing pump, followed by fluid flow simulations to obtain pressure distribution, and continued with structural analysis to determine the Von Mises stress and Safety Factor. Variations in geometric parameters such as bend radius (R-bend), chamfer angle (C-angle), and inlet radius (R-in) are analyzed against the distribution of pressure, stress, and particle erosion rate. CFD simulations are performed to analyze the pressure distribution resulting from internal flow conditions, which are then applied as boundary conditions in the FEA model to evaluate the resulting stress and deformation. Simulation results show that geometric changes significantly affect stress concentrations and erosion patterns in critical areas of the casing. Geometry with smoother curved transitions can reduce maximum stress and erosion potential compared to existing designs. These findings contribute to the optimization of submersible pump casing designs to increase service life and operational reliability in mining industry applications.
TECHNO-ECONOMIC STUDY OF PV INTEGRATION INTO A GAS ENGINE-BASED POWER SYSTEM CONSIDERING CURTAILMENT IMPACT: A CASE STUDY OF THE ALOR POWER SYSTEM Adiartha Prihananto; Edy Susanto
Media Mesin: Majalah Teknik Mesin Vol. 27 No. 2 (2026)
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/mesin.v27i2.16601

Abstract

The Solar PV capacity addition target in the 2025–2034 Electricity Supply Business Plan (RUPTL) is set at 17.1 GW. The Alor Power System has one of the highest solar irradiation potentials, reaching approximately 6 kWh/m²/day; however, no grid-connected photovoltaic (PV) plant has yet been deployed in the system. This study investigates the technical and economic feasibility of integrating Solar PV into the existing gas engine-based power system by utilizing the former constrained power plant site in Alor. The evaluation considers three PV penetration scenarios 15%, 20%, and 30% of daily energy demand simulated using HOMER Pro and integrated with the existing 10 MW gas engine power plant (GEPP). Unlike previous studies, this research contributes by evaluating the interaction between PV penetration, curtailment losses, and system-level LCOE to determine an economically optimal renewable penetration limit for an isolated gas-engine-dominated grid. The simulation results indicate that higher PV penetration reduces fuel consumption and operational costs of the gas engine plant but leads to significant daytime curtailment. Among the evaluated scenarios, 20% PV penetration yields the lowest LCOE at IDR 3,334/kWh, outperforming both the 15% and 30% scenarios as well as the GEPP-only base case (IDR 3,435/kWh). The findings demonstrate that a hybrid system configuration with 20% PV penetration and a 10 MW gas engine plant provides the most optimal LCOE for the Alor Power System. This configuration is therefore considered technically and economically feasible to support the national PV capacity expansion target of 17.1 GW under the 2025–2034 RUPTL.
EVALUATION OF CORROSION UNDER INSULATION AND REMAINING LIFE OF CARBON STEEL PIPELINES Muhammad Syukron; Dahniar; Muhammad Rizky Fajarullah; Aura Wulanuari; Kikin Hermanto
Media Mesin: Majalah Teknik Mesin Vol. 27 No. 2 (2026)
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/mesin.v27i2.11804

Abstract

Analysis of Corrosion Under Insulation (CUI) and calculation of the remaining life of corroded pipes of A-106-B material is carried out based on API 571, and ASME B31.3 standards which aim to determine the operational and environmental parameters for the formation of CUI on the pipeline. The tests used include chemical composition test using Positive Material Identification type portable OES and XRF, pipe thickness testing using Ultrasonic Thickness and microscope, corrosion deposit on the pipes was tested using SEM-EDX, hardness testing using Micro Vickers Hardness Test. The results of the analysis showed that the pipe had corrosion in the Outside Diameter (OD) which was categorized as CUI. The corrosion products on the outside of the pipe surface that are formed are Fe2O3 and Fe3O4. The result of the hardness value in the specimen is influenced by the surrounding environment which causes the specimen to become harder. The calculations of the remaining life of the pipes are 2.0, 5.4 and 9.2 years for NG, CG and CH pipes respectively.
DEVELOPMENT AND PRELIMINARY CHARACTERISATION OF A MULTI-ORIENTATION PROPELLER TEST BENCH FOR STATIC THRUST-VECTOR MEASUREMENT IN TILT-CAPABLE UAV APPLICATIONS Buyung Junaidin; Agung Prakoso; Sarjito; Dani Harmanto; Adam Ghuthruf Nugroho; Dana Fitra Thoriq
Media Mesin: Majalah Teknik Mesin Vol. 27 No. 2 (2026)
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/mesin.v27i2.16440

Abstract

This study develops and preliminarily characterises a low-cost multi-orientation propeller test bench for static thrust-vector measurements relevant to tilt-capable unmanned aerial vehicle (UAV) propulsion research. The platform combines a servo-actuated 0-90 degree tilt mechanism, an Arduino Uno data-acquisition unit, nominal 1 kgf load-cell instrumentation with HX711 conditioning, an MPU6050 orientation sensor, RPM monitoring, and an inline electrical power meter. The prototype was evaluated using a 63.5 mm HQProp T63-6 propeller driven by an iFlight XING 1404 4600 KV motor at discrete tilt angles of 0, 30, 45, 60, and 90 degrees over several rotational-speed settings. The preliminary measurements show the expected redistribution of the propulsion-force vector in the laboratory reference frame: the horizontal component is dominant at 0 degrees, the vertical component is dominant at 90 degrees, and approximately balanced components occur near 45 degrees. Increasing rotational speed increases the measured force magnitude across the tested orientations. The present experiment is intentionally interpreted as static multi-orientation force-vector characterisation rather than a reproduction of transition-flight aerodynamics, because no external freestream was imposed. The results demonstrate the practical functionality of the rotating test-bench architecture and its suitability as a foundation for more rigorous propulsion-system characterisation.

Page 4 of 4 | Total Record : 34

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