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Item Desenvolvimento de método para fabricação de ferramentas de microusinagem(Universidade Federal de Goiás, 2018-11-23) Tavares, Vitor Renan Pires; Cunha, Daniel Fernandes da; Cunha, Daniel Fernandes da; Ferreira Filho, Demóstenes; Albuquerque, Fillipe MendonçaThis work is a task created for the production of tools for micro milling the reuse of samples of micro mills that were used and discarded by the method of non-conventional machining of Electro-erosion. The conventional milling of EDM, the milling process and the micro milling process. The main objectives are also to reuse / recycle, develop and research non-conventional machining areas and micro machining through the manufacture of a micro mill with reuse of samples and use of tools in research and research. micro-machining, thus contributing to the scientific development of both parties. It was also used a methodology for the use of cutting tools by the method of Electroerosion, such as the parameters used and the criteria for their selection. It briefly and briefly explained the steps and results found, and the results obtained. The production of micro mill and use the same at the same microbial processing. The first step was done from a listing, and a search continues through new studies to optimize the results found.Item Análise de faturas de energia elétrica da Universidade Federal de Goiás com vistas à otimização de custos associados a este insumo(Universidade Federal de Goiás, 2018-11-30) Ferreira, Leonardo da Cruz; Ferreira, Lorena Ediluna; Belchior, Fernando Nunes; Belchior, Fernando Nunes; Oliveira, Antônio Melo de; Castro, Marcelo StehlingConserve the financial balance of a company turns into a challenge for any managemen mainly in economic crises which decrease the company incomes. Besides the increase of essential inputs, a electric energy, the challenge gets worse, when the actual energy supply contracts do not offer to consumer the option to choose their providers. In cases as universities, the right to contract energy supply decreases cost and can be used for institution benefit. The knowledge that can simplify management of resources are importan to reduce costs and relieve risks in a decision, mainly with highly consumers. The objective for this project i show the methodology for contract energy supply context (even in the free energy market, as regulated energ market), optimizing the best contracts for Federal University of Goias.Item Projeto de uma usina fotovoltaica e sua viabilidade econômica(Universidade Federal de Goiás, 2018-12-07) Hoepers, Gean Rodrigo Warsneski; Oliveira, Iury Amâncio; Santos, Euler Bueno dos; Santos, Euler Bueno dos; Valle, Ana Cláudia Marques do; Marra, Enes GonçalvesThis paper presents relevant concepts in the area of Electrical Engineering, reporting on the use of solar power plants as a complementary energy source to the Brazilian energy matrix. The constantdrop in the price of photovoltaic materials together with the great availability of solar resources in Brazil makes the solar source interesting alternative. Therefore, this study presents the necessary requirements for the design and project of photovoltaic systems that comply current standards. In addition, an economic viability study and its relevant financial indicators are also discussed. Using the necessary concepts, it is presented the development of the solar energy project to attend to a particular specific and its own study of economic feasibility, showing how investment in the solar economy is feasible.Item Transmissão de imagens utilizando a tecnologia F-OFDM(Universidade Federal de Goiás, 2018-12-10) Silva, Leonardo Lucas de Assis; Rocha, Flávio Geraldo Coelho; Rocha, Flávio Geraldo Coelho; Vieira, Flávio Henrique Teles; Lemos, Rodrigo PintoThis work aims to address and evaluate the performance of data transmission of an image using the Orthogonal Frequency Division Multiplexing (OFDM) technology compared to the Filtered Orthogonal Frequency Division Multiplexing (F-OFDM) technology. The F-OFDM is a candidate technology to be used in the new generation of wireless mobile communication, the 5G. In 5G, there is the prospect that high-speed services and availability will be offered to users, such as: low-latency in mobile Internet, telemedicine, communication among devices such as machines and vehicles (D2D - Device to Device) and paradigm of the Internet of Things (IoT - Internet of Things). F-OFDM retains the advantages of OFDM and reduces important disadvantages by using a filter design that smoothes truncation at the ends of its subbands, reducing OOBE (Out Of Band Emission). In this work we also explore how the preparation for the transmission of an image through an OFDM tecnology based network takes place and how it is retrieved at its destination. Finally, simulation results of the transmission of an image through the channels of an OFDM and F-OFDM network are presented and the transmission and reception processes are evaluated using the following performance parameters: BER (Bit Error Ratio), PAPR (Peak to-Average Power Ratio), Power Spectral Density (PSD) analysis in passing bandwidth, impact changes in filter design, and a simplified way of verifying extra band emission (OOBE).Item Análise da influência do pré-aquecimento, gás de proteção e tecimento na diluição e dureza de revestimento de inconel 625 ao substrato de aço carbono por processo MIG/MAG(Universidade Federal de Goiás, 2018-12-10) Speziali, Lucas Moura; Ferreira Filho, Demostenes; Ferreira Filho, Demostenes; Figueiredo, Kleber Mendes de; Gonçalves Júnior, José LúcioWelding coating is an increasingly used method for the manufacture of wear and corrosion resistant parts, since it allows the manufacture of parts with lower cost materials, applying more noble materials to the surface to achieve the desired properties. The present work deals with the influence of the variation of three parameters on the coating of a Nickel alloy (Inconel 625) by MIG / MAG welding on a carbon steel substrate, varying the protection gas and the preheating temperature, with the purpose of determining the most suitable parameter to perform the coating process in function of not having high dilution of the weld bead in the substrate, concurring in significant losses in the hardness of the coating material. Welding is also contemplated with the weaving technique, in order to assess whether or not the use of weaving is advantageous for the process. The main results were increased dilution for use of the fabric, increase of the preheating temperature, and larger amounts of active gas in the protection gas. For welding with Ar + 25% He also increased the dilution for higher preheating temperatures. With increasing dilution, for higher temperatures and active gas there was reduction in hardness. The weave had no clear behavior with respect to the hardness of the coating.Item Gestão de energia em unidades hospitalares: estudo de caso do hospital das clinicas da Universidade Federal de Goiás - parte 2(Universidade Federal de Goiás, 2018-12-12) Maciel, Stephanny Lima; Valle, Ana Cláudia Marques do; Hamberger, Paula Andréia do Valle; Valle, Ana Cláudia Marques do; Cavalcante, Hugo Rafael GonçalvesItem Projeto de um microaerogerador de ímãs permanentes(Universidade Federal de Goiás, 2018-12-13) Duarte, Denner Cezar; Martins, François de Souza; Paula, Geyverson Teixeira de; Paula, Geyverson Teixeira de; Dias, Renato Jayme; Kopcak, IgorThis following work deals with the design and construction of a Permanent Magnet AC brushless micro-aerogenerator, based on a preexisting induction motor stator, designed to meet the demands of small rural installations in the region of Goiás. Using the finite element method, it was possible to obtain generator performance predictions based on the main parameters that could be changed such as the number of turns, the type of winding, the diameter of the enameled copper wire used in the coils, dimensions and materials of the rotor, the quantity, composition, geometry and energy product of the magnets and other parameter which will be discussed throughout this document. The comparison between the practical results of the tests performed on the generator and the simulations generated by the software proved to be satisfactory. The generator is capable of producing three-phase sine waves that have high fidelity to the ideal, obtaining a R2 = 0.9989 when comparing a voltage cycle of the generator with a sine function, in addition to a spectrum of harmonics where the most expressive (2nd and 3rd harmonic) represent, respectively, 2% and 1.7% of the fundamental amplitude, demonstrating the quality of the final product. In the load tests a satisfactory voltage regulation was obtained with a low voltage drop (see Table 5). Due to the high number of poles, in the process of rectifying the current it was possible to minimize the ripple using a low capacitance in the circuit, this implies a low investment in capacitor banks to make available the generated energy to the network. The cost of the machine, combined with the reuse of parts, provided a low cost, totaling R $ 204.00 at the end of its construction. The cost of the machine, combined with the reuse of parts, provided a low cost, totaling R $ 204.00 at the end of its construction.Item Estudo para o gerenciamento de projeto e dimensionamento de elevadores(Universidade Federal de Goiás, 2018-12-14) Santos, Guilherme Gomes dos; Silva, Hédipo José Ribeiro e; Valle, Ana Cláudia Marques do; Valle, Ana Cláudia Marques do; Hamberger, Paula Andréa do Valle; Costa, Jônatas SiqueiraThis paper aims at structural and components analysis suitable for deployment of a variety of elevator environments. The study is mainly focused on specific mechanical and electrical functions for elevator installation, as well as a brief comment on the use of modern control modules with permanent magnet or induction high performance machines, LED lighting, intelligent software and regenerative braking. In this paper, the basic operating principles of the motors used in the elevators and techniques for the sizing according to the norms in force in Brazil are indicated, being NM207, NM196, NBR 14712 and NBR 8400.Item Soluções analíticas e numéricas usando o método SPH: aplicações à condução de calor e ao tubo de choque(Universidade Federal de Goiás, 2018-12-14) Pamplona, Almério José Venâncio Pains Soares; Vasco, Joel Roberto Guimarães; Vasco, Joel Roberto Vasco Guimarães; Moreira, Leonardo de Queiroz; Ribera, Rodrigo LisitaIn the context of the development and advancement of numerical approximation techniques for scientific and engineering research, the present work proposes to explore traditional numerical methods of finite differences, such as Euler, Lax-Wendroff and Mac-Cormack, and compare with the Smoothed Particle Hydrodynamics (SPH). For this, two physical problems are used: the shock tube and the heat transfer by conduction in a rectangular flat plate. The mathematical models of these problems are presented and analytical solutions are developed for them, so that they are the reference elements for the comparison of the numerical methods. The numerical models of each method are introduced with a brief bibliographic review, and in the case of finite difference methods, a brief development is doing, giving more attention to the SPH method. Given this, numerical approximations are applied to the physical problems, generating results that are compared with the exact solutions. In addition, some aspects of the numerical methods are explored, trying to understand the influence of the same on the results, allowing a more detailed analysis. Finally, the methods are compared among them, seeking to understand the potential of the SPH method.Item Projeto de sistema de geração fotovoltaica com potência de 1.004kWp/800kWca(Universidade Federal de Goiás, 2018-12-14) Abe, Bruna Cristina Satie; Marra, Enes Gonçalves; Marra, Enes Gonçalves; Matias, Lourenço; Nerys, José Wilson LimaThis thesis presents an executive project of a photovoltaic-power generation system with rated power at 1.004kWp/800kWac to be installed in a dairy plant at Orizona municipality in Goiás State. This work presented a methodology to design photovoltaic power systems, comprising the required steps taking into account the client power demand, available solar resource and physical characteristics of the installation. The presented methodology was applied to the study case, yielding an executive project comprised by physical definition of arrays and sub-arrays, PV modules and inverters sizing, as well as determination of electrical installation equipments such as cables and switching and protection devices. The PV system was designed with rated power at 1.004Wp at STC conditions and rated power at 800kW at the ac side, composed by 13 60kW inverters and one 20 kW inverter connected to 14 PV sub-arrays comprising 2.790 PV modules rated at 360Wp each. Finally, the text presents a financial analysis to assess net present value (NPV) and the payback time of the investment.Item Modelagem e avaliação computacional do desempenho do motor brushless DC e AC para obtenção de parâmetros elétricos(Universidade Federal de Goiás, 2018-12-14) Costa, Frederico Margues da; Paula, Geyverson Teixeira de; Paula, Geyverson Teixeira de; Lemes Filho, Célio Corrêa; Assis, Lucas Franco deThe following work has as main objective the computional analysis, through Finite Elementssoftwares, of electric and eletromagnetics parameters of Brushless DC and AC motors, in order to assist electric motor designers by providing more realistic numbers (parameters). The analyses were made through the Finite Element Method Magnetics (FEMM) software, simulating a Brushless motor and so elicted the desired parameters.Item Projeto de reboque para transporte de veículos Mini-Baja(Universidade Federal de Goiás, 2018-12-17) Rêgo, Felipe Santana; Oliveira, Ademyr Gonçalves de; Oliveira, Ademyr Gonçalves de; Ferreira Filho, Demóstenes; Gonçalves Júnior, José Lúcio; Teixeira, Philippe César FernandesCar trailers are a practical solution for volume transport. Observing the need for transportation from the university's mini-baja team vehicle, it was decided to design a trailer to solve this impasse. It was then found in simplified equipment that can be produced in the university's own manufacturing laboratory: a trailer with 750 kg PBT made with usual cutting and welding processes. This paper will present the step-by-step of the project, the simulations of static requests and analysis of natural frequencies together with their modes of vibration.Item Construindo um quadricóptero com o microcontrolador ATMEGA328-PB(Universidade Federal de Goiás, 2018-12-17) Silva, Glauco Buarque da; Melo, Fernando Ferreira de; Melo, Fernando Ferreira de; Nerys, Jose Wilson Lima; Alves, Rubens AntônioThe present work demonstrates the construction of a quadcopter (air vehicle quad motor), from its physical construction to its implantation by software. It is a strapdown system because its sensors are strapped to the structure, removing the need for some calibrations and increasing its reliability by reducing moving parts. It comes from a negative feedback and through an inertial sensor (containing 3x accelerometers, 3x gyroscopes, 3x magnetometers, in an exclusive board) the control stabilization software was developed using a discrete PID control technique, with addition of a mechanism for displacement. The algorithm used to solve electrical noise problem (read in sensors) is Digital IIR 2nd order bi-quad low-pass filter, and 'Filter Madgwick-Mahony', which uses 'quaternions' to further calculate Euclidean angles: pitch, roll and yaw. Was also performed the Fourier analysis of frequency spectrum to set up the filter cut-off frequency. The use of an ATMEGA328-PB AVR 8-bit microcontroller has processing capability limitations and was necessary to use some optimizations and approximations. Its CPU does not have a FPU (floatingpoint unit) to deal with floating point calculations (they are emulated by software, the compiler AVR-GCC does it automatically). The IDE used to develop the microcontroller firmware was “Atmel Studio 7.0”. Telemetry and control software was developed on C# (C Sharp) in “Microsoft Visual Studio 2017”, for purposes of monitoring, measurement and simulation (filter response).Item Estudo e proposta de um sistema de propulsão pneumático para um veículo de três rodas(Universidade Federal de Goiás, 2018-12-19) Bastos, Gustavo Viana; Fonseca, João Paulo da Silva; Fonseca, João Paulo da Silva; Fagundes Neto, Marlipe Garcia; Oliveira, Ademyr Gonçalves deClimate changes in recent years has raised questions in regards of the sustainability of currentenergy solutions, especially in the automotive sector. The combustion of hydro carbonates by internal combustion engines produces large amounts of greenhouse gases such as carbon monoxide, carbon dioxide, oxides of nitrogen, among others. The need to change the energy matrix is evident. With this, compressed air presented itself as a possible solution to propel small vehicles and short distances traveled. The present work carried out this study through powertrain design of a vehicle with three wheels. Power and vehicle stability analyzes were performed to determine the necessary components. Although the project did not meet the minimum performance requirements estimated prior to the study, it was possible to verify benefits in relation to vehicles powered by battery and fuel cell and fossil fuels. Compressed air has shown to be an interesting option for transporting at small distances, but it needs further development as to components commercially available for this applicationItem Mapeamento e modelagem dos processos de projeto, construção e aprovação de subestações de consumidor em média tensão no estado de Goiás(Universidade Federal de Goiás, 2018-12-19) Silva, Mariana Graziani da; Oliveira, Renata Isabella Pinheiro de; Valle, Ana Cláudia Marques; Valle, Ana Cláudia Marques; Arruda, Colemar; Cunha, Jorge Luiz Rodrigues da; Silva, Jéssica Cristina Marques da; Hamberger, Paula Andréia do ValleThis work has the objective of mapping and modeling the processes of design, construction and approval of medium voltage consumer substations in the state of Goiás, aiming at understanding all stages of the consumer substation life cycle by all the people involved in the process. Therefore, it was necessary to collect information about this life cycle, through interviews with the people involved in the construction process: designers, analysts of the concessionaire and the executor. The interviews were conducted individually, based on different questionnaires elaborated by the authors of the study, but aimed at the same objective: To understand the problems and difficulties encountered by each of the workers during the life cycle. Through the appointments indicated in the interviews, the mapping and modeling of the processes and life cycle of the substation could be performed and for the modeling, Bizagi software was used. Each of the interviewees pointed out different points for improvement, but all agreed that three points stand out: The break in the life cycle of a substation, the purchase of equipment with different specifications from those indicated in the project and the current phase of adaptation due to transition from CELG to ENEL. It is believed that a better management of the work schedule should be given in the planning phase, which is the phase most likely to make changes and these have a greater impact on the final result than the changes made in the other phases. Although the impact was treated in all the interviews, the lack of compatibility between the projects was also relevant to the study, which pointed out BIM as a solution for project modeling that enables the task of compatibility verification between the projects in a simply way. The study shows the need of all the people involved in the construction process to know the process model in which they are inserted, so that the life cycle happens in the most efficient way possible for everyone.Item Análise do desenvolvimento socioeconômico em relação à utilização de fontes de energias renováveis no Brasil(Universidade Federal de Goiás, 2018-12-19) Cataneo, Davi Meneses; Valle, Ana Cláudia Marques do; Valle, Ana Cláudia Marques do; Pedroso, Bruno Cosse; Hamberger, Paula Andréa do ValleMany studies have demonstrated the power consumption in general as a principle for the social and economic development of a region. In this thesis was examined the relationship of renewable energy (hydro, solar and wind energy) with economic and social development (IBC). The country of study was the Brazil, being the temporal space ranging from January 2003 until October 2018. Applying the auto regressive Vector (VAR) Test and the Cointegration Test of Johansen (1988). The monthly data analysis was used to check the linearity between economic development and theuse of renewable energies.Item Projeto e desenvolvimento de protótipo de bancada de testes para grupos motopropulsores de aeronaves remotamente pilotadas(Universidade Federal de Goiás, 2019-06-15) Martos Júnior, Júlio Esteves; Katatani Júnior, Sigeo; Katatani Júnior, Sigeo; Mariano, Felipe Pamplona; Moreira, Leonardo de QueirozThis work presents the design and development of a prototype of a test stand for powertrains (GMP) of remotely piloted aircraft (RPA) that meets the needs for development of the area of project performance of the aerodesign team of the Federal University of Goiás (UFG) – Aerodactyl. The main purpose of the bench is to provide the thrust force generated by the power unit when configured with different propellers in addition to rotation, torque and power, the bench contains all the equipment, instruments and components necessary for the powertrain operation and data acquisition, and was manufactured mostly in the laboratories of the Escola de Engenharia Elétrica, Mecânica e de Computação (EMC - UFG). Throughout this work will be presented the theoretical basis for the aircraft performance, the project methodology, the layout drawings of the bench, the equipment, instruments, components used and the results of the tests performed using the motor OS 61 FX of Aerodactyl team. The bench proved to be reliable and safe during the tests, easy to instrumentate in terms of obtaining the thrust data, but difficult to treat the data for rotation acquisition, and it is possible to use it for other models of motors, for example, drone electric motors. The results obtained with the test of the engine OS 61 FX presented thrust near to 5 kgf (49 N) when in rotations above 12,000 rpm, and made possible to observe the behavior of the configured GMP with four different propellers.Item Projeto de cabeamento estruturado na infraestrutura de rede da escola de engenharia(Universidade Federal de Goiás, 2019-06-27) Costa, Alexandre da Silva; Castro, Tiago Santana de; Castro, Marcelo Stehling de; Castro, Marcelo Stehling de; Araújo, Sérgio Granato de; Oliveira, Gustavo Dias deThe present project started with an internship done by one of the authors in one of the buildings of the School of Engineering of the UFG (EMC-UFG) in 2018. Several problems were noticed during everyday tasks common to the network environment. The objective of this work is to present and develop practical solutions that improve the EMC-UFG Block A network environment based on Brazilian technical standards, thus enabling a standardization in existing cabling. First, the theoretical basis of network management is presented, followed by the presentation of various international and national standards on structured cabling. Then, the basic concepts of cabling infrastructure, active and passive components for the understanding of this project are exposed. It is necessary to demonstrate where the EMC-UFG network is inserted before proceeding with designation of the ideas proposed by this work. Finally, the results obtained are elucidated and can serve as a basis for future network expansion projects.Item Projeto de cabeamento estruturado na infraestrutura de rede da Escola de Engenharia(2019-06-27) Costa, Alexandre da Silva; Castro, Tiago Santana de; Castro, Marcelo Stehling de; Castro, Marcelo Stehling de; Araújo, Sérgio Granato de; Oliveira, Gustavo Dias deThe present project started with an internship done by one of the authors in one of the buildings of the School of Engineering of the UFG (EMC-UFG) in 2018. Several problems were noticed during everyday tasks common to the network environment. The objective of this work is to present and develop practical solutions that improve the EMC-UFG Block A network environment based on Brazilian technical standards, thus enabling a standardization in existing cabling. First, the theoretical basis of network management is presented, followed by the presentation of various international and national standards on structured cabling. Then, the basic concepts of cabling infrastructure, active and passive components for the understanding of this project are exposed. It is necessary to demonstrate where the EMC-UFG network is inserted before proceeding with designation of the ideas proposed by this work. Finally, the results obtained are elucidated and can serve as a basis for future network expansion projects.Item Viabilidade econômica de migração para o mercado livre de energia: estudo de caso da Universidade Federal de Goiás(Universidade Federal de Goiás, 2019-07-04) Naves, Heitor de Sousa; Silveira, Igor Caminha Fuiza Pequeno; Castro, Marcelo Stehling de; Castro, Marcelo Stehling de; Oliveira, Antônio Melo de; Belchior, Fernando NunesThis present article disposes itself to study the history of the energy market in Brazil, explaining the nuances that permeate the free market and to carry out a case study through an analysis of the economic viability of the UFG - Federal University of Goiásinsertion in the free energy market. Through bibliographic research within the legislation that regulates the Brazilian electric sector, the understanding of the evolution of the generation, transmission and distribution of electric energy was consolidated. Associated with this research, one can understand how the electricity bill delivered to the consumer is calculated. The understanding of the legislation and the calculation of the invoices issued by the electric power distributor subsidized the analysis, using a computational Business Intelligence tool, allowing the migration from the regulated contracting environment to the free contracting environment. The simulations carried out showed a saving potential of near 17% in the most conservative scenario visualized.