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Rizal Mahmud
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Institut Teknologi Adhi Tama Surabaya Jl. Arief Rahman Hakim No. 100, Surabaya, East Java, Indonesia 60117
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Journal of Mechanical Engineering, Science, and Innovation
Published by Institut Teknologi Adhi Tama Surabaya
ISSN : 2776933X     EISSN : 27763536     DOI : https://doi.org/10.31284/j.jmesi
Core Subject : Science, Engineering,
Control & Systems Engineering Energy Engineering Mechanical Engineering
Journal of Mechanical Engineering, Science, and Innovation (JMESI) is a peer-reviewed journal in English published two issues per year (in April and October). JMESI dedicated to publishing quality and innovative research in the field of mechanical engineering and science, thereby promoting applications to engineering problem. It encompasses the engineering of energy, mechanical, materials, and manufacturing, but it is not limited to scopes. Those are allowed to discuss on the following scope: Energy: Energy Conversion, Energy Conservation, Renewable Energy, Energy Technology, Energy Management. Mechanical: Applied Mechanics, Automobiles and Automotive Engineering, Tribology, Biomechanics, Dynamic and Vibration, Mechanical System Design, Mechatronics. Material: Material Science, Composite and Smart Material, Micro and Nano Engineering, Powder Metallurgy. Manufacturing: Advanced Manufacturing Techniques, Automation in Manufacturing, Modelling, and Optimization of Manufacturing Processes.
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 9 Documents
 1 
Search results for , issue "Vol 4, No 1 (2024): (April)" : 9 Documents clear
Effects of UV Exposure on the Physical, Chemical, and Mechanical Properties of Silica Microballoon Reinforced Epoxy Composites Yunus, Muhammad; Ardhyananta, Hosta; Hidayat, Mas Irfan Purbawanto; Rosidah, Afira Ainur; Laksmono, Joddy Arya; Jayatin, Jayatin; Susanti, Diah; Wijaya, Ade Mundari
Journal of Mechanical Engineering, Science, and Innovation Vol 4, No 1 (2024): (April)
Publisher : Mechanical Engineering Department - Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jmesi.2024.v4i1.6159

Abstract

Epoxy-based composites are widely used in various applications due to their excellent mechanical properties and durability, but their performance under prolonged UV exposure remains a critical concern. This study examines the impact of UV exposure on the physical, chemical, and mechanical properties of epoxy-silica microballoon composites over curing periods of 0, 200, and 400 hours. Results indicate that UV treatment increased the density from 1.0073 g/cm³ to 1.0129 g/cm³. SEM images showed a reduction in fragmentation of epoxy microballoons, indicating stronger bonding. EDX results revealed some changes in elemental composition, with a notable decrease in the percentage of sodium from 0.81 wt.% to 0.18 wt.% and silicon from 7.16 wt.% to 0.12 wt.%. FTIR analysis identified a new hydrogen bond formations at 3350 cm⁻¹. Mechanical testing showed that UV treatment significantly increased the flexural stress from 36.83 MPa to 49.98 MPa. Additionally, hardness (Shore D) increased from 78.4 to 80.2 Shore D. These findings highlighted the significant effects of UV exposure on the structural integrity and bonding mechanisms of the composites, offering valuable insights for their use in UV-prone environments.
Calculation Study of Double Pipe Type Heat Exchanger in LNG Plant Pre-Design with Capacity 250 tons/hour Novianarenti, Eky; Ningsih, Erlinda; Rahman, Nanik Astuti
Journal of Mechanical Engineering, Science, and Innovation Vol 4, No 1 (2024): (April)
Publisher : Mechanical Engineering Department - Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jmesi.2024.v4i1.5164

Abstract

In industrial processes, heat exchangers are very important tools and are always needed. Heat exchangers can be used to increase and decrease the temperature. The most widely used type of heat exchanger is the Double Pipe or DPHE type. The LNG plant is one of the industries that uses a heat exchanger in the process of lowering the initial temperature of the LNG to change the gas phase to liquid. The aim of this study is to obtain better efficiency in the LNG manufacturing process, so it is necessary to carry out a heat exchanger design study. Based on the design calculation results, it was found that Heat Exchanger type 2-4, material Carbon steel, area 2076, 16 m2, Rd 0.005 hr ft2 oF/btu and ΔP of 4.4051 psi. It can be concluded that the heat changer design is feasible to operate safely and without any obstacles. 
Evaluation of exhaust emissions of diesel engine using pyrolysis waste plastics fuel Sudrajad, Agung; Sunardi, Sunardi; Rosyadi, Imron; Iskandar, Deni
Journal of Mechanical Engineering, Science, and Innovation Vol 4, No 1 (2024): (April)
Publisher : Mechanical Engineering Department - Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jmesi.2024.v4i1.5971

Abstract

The increase in the number of vehicles is one of the causes of increasing air pollution. In addition, plastic waste is a type of inorganic waste that has long decomposed, plastic waste can be recycled into fuel oil. But each type of fuel has characteristic properties, this affects the exhaust emissions resulting from the combustion process. The purpose of this study is to determine the exhaust gas emissions (CO, HC, CO2 ) from Single Cylinder R175A type diesel engines with the three kind of fuel such as 100% plastic fuel oil, dexlite, and a mixture of plastic oil fuel and dexlite with a mixture ratio of 30% plastic oil: 70% dexlite (PO30), 50% plastic oil: 50% dexlite (PO50) and 70% plastic oil: 30% dexlite (PO70). The result obtained is that carbon monoxide (CO) exhaust emissions increase with increasing rpm, hydrocarbon (HC) emissions decrease with increasing rpm. The use of plastic fuel oil produces the lowest carbon dioxide (CO2) emissions.
Optimization of Fused Deposition Modeling (FDM) Machine Process Parameters for Polylactic Acid (PLA) Surface Roughness Using the Taguchi Approach Rosyadi, Mochammad Willdan; Prayoga, Adimas Dwi; Mukti, Abdi Satryo; Mahameru, Rolland Darin Khalifah; lestari, Wahyu Dwi
Journal of Mechanical Engineering, Science, and Innovation Vol 4, No 1 (2024): (April)
Publisher : Mechanical Engineering Department - Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jmesi.2024.v4i1.5999

Abstract

The surface quality of 3D printed products greatly influences the performance and aesthetics of the final product. Polyalactid Acid (PLA) is a material commonly used in 3D printing manufacturing because it is environmentally friendly and easy to use. However, the roughness of the printed surface is often a challenge that needs to be overcome to improve product quality. This research aims to optimize surface roughness in the 3D printing process using PLA material by applying the Taguchi method. The 3D printing parameters used in this research are nozzle temperature, infill density, printing speed, layer thickness, infill pattern, and orientation with each parameter having three levels. The research results show thatThe optimal parameter combination that produces the lowest surface roughness is nozzle temperature at level 2, infill density at level 3, printing speed at level 3, layer thickness at level 3, infill pattern at level 3, and orientation at level 3. The use of the Taguchi method also shows that the combination of printing process parameters is the factor that most influences the quality of the printed surface. With this optimization, it is hoped that it can improve the quality of 3D printed products and expand the application of PLA materials in various industries. 
Cover and Editorial Page Arifin, Ahmad Anas
Journal of Mechanical Engineering, Science, and Innovation Vol 4, No 1 (2024): (April)
Publisher : Mechanical Engineering Department - Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Optimization of Fused Deposition Modeling (FDM) Machine Parameters for Carbon Fiber Tensile Strength Using the Taguchi Method Prayoga, Adimas Dwi; Mukti, Abdi Satryo; Mahameru, Rolland Darin Khalifah; Rosyadi, Willdan; lestari, Wahyu Dwi
Journal of Mechanical Engineering, Science, and Innovation Vol 4, No 1 (2024): (April)
Publisher : Mechanical Engineering Department - Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jmesi.2024.v4i1.5987

Abstract

3D printing using Fused Deposition Modeling (FDM) technology has emerged as a promising approach for manufacturing components with composite materials such as carbon fiber. This study aims to optimize the parameters of FDM machines for carbon fiber tensile strength using the Taguchi Method. The optimized FDM machine parameters include nozzle temperature, infill density, printing speed, layer thickness, infill pattern, and orientation. Experiments were conducted based on the Taguchi experimental design with an L27 Orthogonal Array (3^6) matrix, resulting in 27 experiments with different parameter combinations. After printing was completed, tensile tests were performed to measure the tensile strength of the printed samples. The results of the analysis using the Taguchi Method show the optimal settings of the FDM machine parameters to achieve maximum tensile strength for carbon fiber material. The analysis results show that the parameters that can optimize the tensile test response are nozzle temperature at level 2 (230°C), infill density at level 3 (80%), printing speed at level 3 (100 mm/s), layer thickness at level 3 (0.3 mm), infill pattern at level 1 (line), and orientation at level 3 (30°) with the highest tensile test value of 27.7766 MPa. This study provides an important contribution to the development of 3D printing techniques with carbon fiber, by identifying the optimal settings that can improve the mechanical performance of printed components. It is expected that the results of this study can be used as a practical guideline for the 3D printing industry in optimizing FDM machine parameters for printing carbon fiber-based composite materials.
Lignite Coal Co-combustion Performance with Banana Tree Waste, Tree Leaves and Cow Dung Manure Blends for Emission Reduction During Power Generation Siddique, Mohammad; Abubakar, Abdulhalim Musa; Soomro, Suhail Ahmed; Memon, Hafeez-ur-Rehman; Zakarya, Irnis Azura; Sylvain, Tome
Journal of Mechanical Engineering, Science, and Innovation Vol 4, No 1 (2024): (April)
Publisher : Mechanical Engineering Department - Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jmesi.2024.v4i1.5346

Abstract

Biomass blends with lignite coal (LC) normally have better co-combustion property, which in turn improves electricity output and reduces emissions. Given that global warming caused by emissions of CO, NOx, SO2, CO2 and NO from manufacturing industries and power plants is growing, this study seeks to find environmentally friendly alternative fuel to be employed. Here, suitable particle size of LC was combined with tree leaves (TL), cow dung manure (CDM) and banana tree waste (BTW) in the ratio of 90:10, 80:20, 70:30 and 60:40 each to form 16 samples (4 single and 12 blends). Thermal and combustion characteristics studies conducted during their combustion in an electric muffle furnace at 700  helped declare all blends as favorable with higher heating values ranging from 521179-892952 Btu/lb to be used as fuel in coal-powered plants. For moderately low emissions of flue gases, better thermal combustion property, high heating value (i.e., 892952 Btu/lb) and the highest electricity output, LC90 + CDM10 is the best blend discovered by this study. However, LC utilization still defeats the best performing blend in terms of lower emission with LC80 + TL20 having tolerably closer emission level compared to LC and a good substitute if emission must be kept as same level. Due to this shortcoming, further ratio adjustment or optimization and catalyst/additive addition is recommended to bring the emissions to environmentally friendly levels. It is also paramount to analyze the samples for chlorine concentrations to keep at desired composition in order not to risk a high temperature chlorine corrosion during co-combustion.
Effect of Cryogenic Treatment on Hardness Value and Microstructure of Medium Carbon Steel Tsamroh, Dewi Izzatus; Dika, Johan Wayan; Yazirin, Cepi; Sasongko, Muhammad Ilman Nur; Prasetiyo, Ardianto
Journal of Mechanical Engineering, Science, and Innovation Vol 4, No 1 (2024): (April)
Publisher : Mechanical Engineering Department - Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jmesi.2024.v4i1.5972

Abstract

Medium carbon steel is a kind of material that is usually used in manufacturing axles, gears and shaft. The application of medium carbon steel to axles, gears and shaft requires high hardness on the surface, but high ductility at the core. The mechanical properties of this material can be improved through a heat treatment process. However, in mass production there is obstacles, which is the uneven hardness on the entire surface, thus, it does not meet the hardness standards set as a commercial product. Therefore, cryogenic treatment was added which aimed to maintain the hardness value of the material after heat treatment. The material used in this research was S45C steel. The heat treatment conducted to increase the hardness of S45C steel was hardening followed by tempering. Hardening was carried out at a temperature of 900 with a holding time of 45 minutes, followed by rapid cooling (quenching) using dromus oil as a medium. Tempering was carried out at 450 for 15 minutes. Cryogenic treatment was carried out at -190 for 1 hour. The research results showed that the highest hardness was obtained in specimens with hardening-quenching treatment followed by cryogenics with a hardness value of 35 HRC (core) and 35.8 HRC (surface). The hardness test results were in line with the microstructure test results., where the microstructure of specimens that had hardening-quenching treatment followed by cryogenics were dominated by pearlite, thus the hardness value were high.
NDT Testing with Visual Testing Method in the Inside Upper Frame 6015 Area with GMAW Welding Based on 1E0099 Fajrin, Aulia; Putra, Lalu Giat Juangsa; Sutrisno, Recky
Journal of Mechanical Engineering, Science, and Innovation Vol 4, No 1 (2024): (April)
Publisher : Mechanical Engineering Department - Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jmesi.2024.v4i1.5125

Abstract

The Upper Frame is the most important component of the excavator because it acts as an engine mount or hose holder connected to the main control valve. So for the welding process, special attention is needed for the frame center which aims to avoid weld distortion between the right side and the left and also as a cable holder from the engine.  Therefore, the welding results require special attention starting from the size of the weld and the arrangement of defects in the weld results. The welding process on the Upper Frame uses the GMAW (Gas Metal Arc Welding) process with Lincoln Merit ER70S-6 wire, where the wire size is 1.320 mm and the welding results will be tested using the NDT (Non-Destructive Testing) method, namely Visual Testing. This study aims to determine the results of visual tests in the inside Upper Frame 6015 area using the 1E0099 standard. 1E0099 is the welding procedure used at PT Caterpillar Indonesia Batam. Visual test results from GMAW (Gas Metal Arc Welding) welding are expected to be free of weld defects. If there are still weld defects found, the welding results are still within the acceptance criteria based on internal code 1E0099.

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