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2023 International Conference on Computer Science, Information Technology and engineering, ICCoSITE 2023

作者： Albana, Muhammad Hasan Guntur, Harus Laksana Putra, Ary Bachtiar Khrisna Institut Teknologi Sepuluh Nopember Graduate Program of Mechanical Engineering Department Surabaya Indonesia Institut Teknologi Sepuluh Nopember Mechanical Engineering Department Surabaya Indonesia

ISBN: (纸本)9798350320954

Excessive heat will reduce the torque, power, and efficiency of the in-wheel motor, for example, the in-wheel motor used for an electric scooter. This study discusses an effort to reduce the temperature of the in-wheel motor of an electric scooter by making grooves on the cover surface. If the temperature of the in-wheel motor cover is low, it will reduce the temperature of the in-wheel motor as a whole. This research uses the finite element method: steady-state thermal analysis and transient thermal analysis. The software used is Ansys Workbench. Suppose a heat flux of 1000 W/m2 is inside the in- wheel motor, the metal used as a cover is aluminum, 22°C is the starting temperature, and the ambient temperature is 28°C. The results showed that the grooves on the in-wheel motor cover caused the temperature to be reduced by 8.4%, and the total heat flux increased by 8.3% compared to the standard in-wheel motor cover (cover without modifications). In this study, the transient thermal analysis described the heat transfer process better than a steady-state thermal analysis. © 2023 IEEE.

关键词： Finite element method

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The Effect of Fins Design on the Thermal Characteristics of Electric Motors for Electric Vehicles

The Effect of Fins Design on the Thermal Characteristics of ...

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2023 International Conference on Advanced Mechatronics, Intelligent Manufacture and Industrial Automation, ICAMIMIA 2023

作者： Albana, Muhammad Hasan Guntur, Harus Laksana Khrisna Putra, Ary Bachtiar Institut Teknologi Sepuluh Nopember Graduate Program of Mechanical Engineering Department Surabaya Indonesia Institut Teknologi Sepuluh Nopember Mechanical Engineering Department Surabaya Indonesia

ISBN: (纸本)9798350309225

The increasing public demand for electric vehicles also impacts the demand for electric motors. The prominent problem electric motors faces are excess heat when operating because it affects the age and performance of the electric motor. Installing fins on the electric motor housing is one way to reduce heat on the electric motor. In this study, a comparison of the six-fin design was carried out, and the effect on the thermal characteristics of the electric motor was examined. Fins are mounted radially and axially. The six types of fin designs studied are radial fins-round, radial fins-square, radial fins-servo, axial fins-round, axial fins-square, and axial fins-servo. The research uses the lumped circuit models method, and the software used is Motor-CAD. The type of electric motor being studied is a brushless permanent magnet machine (BPM) with an internal rotor. The study's findings indicate that the fin's performance in cooling the electric motor depends on its area. The lower temperatures in the axial fins-servo and radial fins-square compared to other fin designs are due to the broader area of the axial fins-servo and radial fins-square compared to the others. Axially mounted fins provide better cooling than radially mounted fins. For example, the winding temperature on the axial fins-servo is 140.54°C, and the winding temperature on the radial fins-square is 140.86°C even though the area of the axial fins-servo is 22.7% smaller than the area of the radial fins-servo. © 2023 IEEE.

关键词： Electric vehicles

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The Effect of Rotational Speed on the Thermal Characteristics of a Wheel Hub Motor on an Electric Scooter 24

The Effect of Rotational Speed on the Thermal Characteristic...

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24th International Seminar on Intelligent Technology and Its Applications, ISITIA 2023

ISBN: (纸本)9798350313956

When using an electric scooter, there is a problem with the electric motor overheating. Temperatures that are too high will damage motor performance and reduce reliability. As a result, heat transfer from electric motors needs to be carefully considered. This study aims to determine the thermal characteristics of an electric motor by varying the rotational speed. The rotational speeds varied were 250 rpm, 500 rpm, and 750 rpm. Using finite element analysis to answer research questions, the software used is Ansys Motor-CAD. The type of electric motor used is a wheel hub motor with a power of 1.5 kW. The findings indicate that the rotating speed influenced the thermal properties of a wheel hub motor. Wheel hub motor components, including the winding, stator, rotor, cover, and axle, exhibit a drop in temperature with increasing rotational speed. The winding is the component that experiences the highest temperature, and the cover is the component that experiences the lowest temperature. The winding loss value is much higher than the stator, magnet, and rotor loss. Compared to other rotational speeds, the winding temperature at 750 rpm rotational speed achieved a stable temperature the quickest, at 519 minutes, while the temperatures at 250 rpm and 500 rpm reached stable temperatures, respectively, at 592.2 and 550.5 minutes. © 2023 IEEE.

关键词： Finite element method

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3D Simulation Combustion Characteristics Of EFB Biomass Co-Firing With Low Rank Coal In Pulverized Coal Boiler

3D Simulation Combustion Characteristics Of EFB Biomass Co-F...

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2023 International Conference on Advanced Mechatronics, Intelligent Manufacture and Industrial Automation, ICAMIMIA 2023

作者： Agus Adi Saputra, I Nyoman Prabowo Setiyawan, Atok Bagus Wijaya Kusuma, I Gusti Ihsan, Sobar Hariana Institut Teknologi Sepuluh Nopember Surabaya Graduate Program of Mechanical Engineering Department Indonesia Institut Teknologi Sepuluh Nopember Surabaya Mechanical Engineering Department Indonesia Udayana University Mechanical Engineering Department Indonesia

ISBN: (纸本)9798350309225

Climate change has received a lot of attention due to high emissions in the energy sector from coal-dependent generators, but the solution that can be done to overcome this is the co-firing method through CFD simulation with a discrete phase model (DPM) carried out by adding EFB biomass in a ratio 5% and 95% LRC coal are injected into the boiler combustion furnace. The research was carried out on a PC boiler with a generation capacity of 315Mwe. The research results show that the addition of EFB biomass to coal combustion causes changes in the calorific value which has an impact on the high temperature of the combustion process. However, it has a good impact from the operational side of burning coal particles. © 2023 IEEE.

关键词： Computational fluid dynamics

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Numerical Study of Temperature Distribution and CO2 Forming of Gaseous Tangential Firing Furnace with O2 Level Variations in Air Combustion 5th

Numerical Study of Temperature Distribution and CO2 Forming ...

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5th International Conference on mechanical engineering, ICOME 2021

作者： Indrawan, Muhammad Deni Sudarmanta, Bambang Setiyawan, Atok Graduate Program of Mechanical Engineering Institut Teknologi Sepuluh Nopember Surabaya60111 Indonesia Department of Mechanical Engineering Institut Teknologi Sepuluh Nopember Surabaya60111 Indonesia

ISBN: (纸本)9789811908668

Oxyfuel combustion is considered to be one of the most effective methods to improve thermal efficiency for high temperature processes such as boiler water of steam power plant. In the oxyfuel combustion, the combustion characteristics such as temperature and CO2 emission are largely influenced by the process parameters such as the mixing between fuel gas and oxygen and the nitrogen content in the oxidant and fuel. A numerical simulation of 200 MW gaseous tangential firing boiler with varying O2 content 25%, 30%, 35% is presented. Simulations demonstrate the characteristics of temperature distribution and CO2 form rate in the furnace. The results show that by increasing O2 percentage in air combustion there is an increase in temperature level and CO2 forms rate by 6.8% and 13.92% in Oxy25, 16.9% and 15.02% in Oxy30, and 19.14% and 15.72% in Oxy35 compared to airfuel combustion. © 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Temperature distribution

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Performance analysis on mechanical and machinability attributes of Al6061-B4C-T6 composites processed via hot extrusion

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Proceedings of the Institution of mechanical Engineers, Part B: Journal of engineering Manufacture 2024年第9期238卷 1386-1400页

作者： Tinga, Sibel Karakoç, Halil Yağmur, Selçuk Saravana Kumar, M. Şeker, Ulvi Çıtak, Ramazan Department of Metallurgy and Materials Engineering Gazi University Ankara Turkey Department of Mechanical Program Hacettepe University Ankara Turkey Department of Manufacturing Engineering Gazi University Ankara Turkey Graduate Institute of Manufacturing Technology National Taipei University of Technology Taipei Taiwan

In this study, composite materials with Al6061 alloy matrix and B4C particles reinforcement were produced by hot extrusion process. Fabricated composites were examined for the mechanical and machinability attributes. Al6061 alloy powders (4C particles (4C (3%, 6%, and 9% by weight) of and then cold pressed under 200 MPa pressure. The cold pressed powder metal block was extruded hot after preheating at 550°C for 1 h. Further, the composites were subjected to T6 aging heat treatment after hot extrusion. Microstructure, density, hardness, tensile strength, and wear properties were examined. The effects of cutting speed and cutting force on the machinability were also investigated. In addition, surface roughness and chips formation were examined. High density (99.6%) values were achieved with the extrusion process. With increasing B4C particles ratio, the hardness and tensile values were increased which was substantiated by the fracture morphology of the tensile specimens. It has been observed that tool smearing was high in the machining of the low-reinforced (3% B4C) composite. The highest cutting force was measured as 236 N at a feed rate of 0.27 mm/rev and a cutting speed of 250 m/min. It has also been observed that the average surface roughness decreased with increasing cutting speed and it increased with increasing feed rate. © IMechE 2023.

关键词： Microstructure

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Design and Construction of a Low-Cost Combat Robot 16

Design and Construction of a Low-Cost Combat Robot

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16th Brazilian Symposium on Robotics and 15th Workshop on Robotics in Education, SBR-WRE 2024

作者： Costa, R.B. Itacaramby, G. Cabral, J. Pastrana, M.A. Peñaloza, J.M. Muñoz, Daniel M. Department of Mechanical Engineering Mechatronics Graduate Program University of Brasilia DF Brasilia Brazil Faculty of Gama Aerospace Engineering Undergraduate Program University of Brasilia DF Brasilia Brazil Faculty of Gama Software Engineering Undergraduate Program University of Brasilia DF Brasilia Brazil

ISBN: (纸本)9798350391084

This paper presents the design and construction of a low-cost combat robot named Artemis, developed for participation in the Robocore Experience 2024 competition. The project emphasizes the integration of cost-effective components and innovative methodologies to create a competitive robot. The ESP32 microcontroller was selected for its advantages in energy efficiency and connectivity, surpassing traditional platforms like Arduino. The construction process involved several phases, including planning, development, testing, correction, and performance evaluation, utilizing tools such as CAD software for design and 3D printing for fabrication. Key components included a DC motor, L298N H-bridge, and a LiPo battery, all chosen to optimize performance while adhering to budget constraints. The robot’s design evolved through iterative testing and adjustments, ultimately leading to a successful competition debut. This work highlights the importance of resourcefulness and collaboration in robotics, showcasing how educational institutions can foster innovation in engineering projects. ©2024 IEEE.

关键词： Budget control

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Utilizing Mobile Robots to Teach Dengue and Chikungunya Prevention in Brazilian Schools 16

Utilizing Mobile Robots to Teach Dengue and Chikungunya Prev...

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16th Brazilian Symposium on Robotics and 15th Workshop on Robotics in Education, SBR-WRE 2024

作者： Costa, R.B. Gomes, Pedro H.L. Rodriguez Silva, Luiz F. Pastrana, M.A. Gontijo, Maria C.C. Luiz, M.S. Muñoz, Daniel M. Department of Mechanical Engineering Mechatronics Graduate Program University of Brasilia DF Brasilia Brazil Faculty of Gama Electronics Engineering Undergraduate Program University of Brasilia DF Brasilia Brazil Faculty of Gama Aerospace Engineering Undergraduate Program University of Brasilia DF Brasilia Brazil

ISBN: (纸本)9798350391084

This paper introduces a novel approach to combating the spread of Dengue and Chikungunya, two prevalent arboviruses in tropical regions, especially in Brazil. The research presents a low-cost differential topology robot designed as an educational tool to raise awareness about mosquito breeding grounds among students and teachers in public schools across the Federal District, Brazil. Developed at the University of Brasilia, the robot is deployed in collaboration with the Federal District Health Department to support prevention campaigns in schools. The paper evaluates the effectiveness of this innovative tool in enhancing community engagement and improving health outcomes. The findings suggest that integrating robotics into health education can significantly elevate awareness and strengthen prevention strategies against arboviral diseases. ©2024 IEEE.

关键词： Mobile robots

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Preparation and Characterization of Nypa Fruit Pulp Extraction as a Natural Material for Scaffold Fabrication using 3D Printing Method 9

Preparation and Characterization of Nypa Fruit Pulp Extracti...

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9th International Conference on Applying New Technology in Green Buildings, ATiGB 2024

作者： Irwansyah, Irwansyah Hendri, Darwin Maulana, Muhammad Rizki Indriani, Aulia Saputra, Maidi University of Teuku Umar Dept. of Mechanical Engineering Aceh Indonesia University of Syiah Kuala Dept. of Mechanical and Industrial Eng. Aceh Indonesia University of Syiah Kuala Dept. of Mechanical Engineering Graduate Program Aceh Indonesia

ISBN: (纸本)9798331505042

The aim of this study is to investigate the extracted Nypa fruticans as an alternative biomaterial used for 3D printing application in the biomedical and pharmaceutical. An important substances that was extracted from nipa palm fruit is galactomannan, a water-soluble heteropolysaccharide. It was considered to the polysaccharide-based polymer material used to fabricate scaffold tissue by 3D printing approach for medical purposes. Emphasis was placed on the synthesis and characterization of extracted nypa fruticans as the primary material, along with glycerol and sorbitol serving as polimerization agents. Extracted nypa with 3%, 5% and 10% amout of variation glycerol and sorbitol was evaluated. The experimental procedures conducted in the laboratory facilitated the isolation, production, purification, and fabrication of the extracted nypa polymer gels. Various properties of the nypa compounds and chemical composition through Fourier-transform infrared (FTIR) Spectrometry were analyzed. Findings indicated that extracted nypa refer to ether bonds (CH2-O- CH2) observed at 875.04 cm-1, identifying compound is galactomannan. This substance is classified within the polysaccharide category due to the appearance of peaks within the range of 900 to 1200cm-1. The incorporation of different amount percentage of glycerol and sorbitol, resulted in distinct impacts on the geometry of 3D printing scaffold material laying down. © 2024 IEEE.

关键词： Glycerol

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Structural Analysis of Thumb Mechanism Exoskeleton Design for Post-Stroke Rehabilitation

Structural Analysis of Thumb Mechanism Exoskeleton Design fo...

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2023 International Conference on Advanced Mechatronics, Intelligent Manufacture and Industrial Automation, ICAMIMIA 2023

作者： Qoryah, Rika Dwi Hidayatul Guntur, Harus Laksana Nurhadi, Hendro Prastyo, Handri Kristianta, Franciscus Xaverius Chandika, Shendy Institut Teknologi Sepuluh Nopember Graduate Program of Mechanical Engineering Department Surabaya Indonesia Institut Teknologi Sepuluh Nopember Mechanical Engineering Department Surabaya Indonesia Institut Teknologi Sepuluh Nopember Mechanical Engineering Department Surabaya Indonesia University of Jember Undergraduate Program Mechanical Engineering Department Jember Indonesia University of Jember Mechanical Engineering Department Jember Indonesia

ISBN: (纸本)9798350309225

Stroke is the second cause of death and the third cause of disability in the world. Stroke is a disease caused by a clot in the artery that supplies blood to the brain (ischemia). Rehabilitation is a solution to restore the function of parts of the body that have been disturbed by a stroke. Therefore, exoskeleton robots for stroke therapy are one solution to provide good rehabilitation. The exoskeleton robot supports healthy human hand movements and considers the safety and comfort factors during rehabilitation. The exoskeleton in this research uses a cable and sheath transmission mechanism with a locally situated motor as a design mechanism that guarantees safety and comfort. The design strength can be determined using ANSYS static structural assistance software so that the maximum stress in links 1, 2, and 3 is known within safe limits with anthropometric loading. Apart from that, the static structural simulation results show that link 1 can withstand a maximum load of 20 N or more in the X-axis loading, a load of 15 N in the Y-axis loading, and a load of 15 N in the Y-axis loading, and a load of 10 N in the Z-axis loading. Link 2 can withstand a maximum load of 10 N in the X-axis load and 20 N or more in the Y-axis load. Meanwhile, link 3 can withstand a maximum load of 20 N in the X-axis load and below 10 N in the Y-axis load. © 2023 IEEE.

关键词： Finite element method

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