Documentação de convênios e P&D

URI permanente desta comunidadehttps://rigalileo.itegam.org.br/handle/123456789/173

Trabalhos ténico-científico oriundos de convênios com universidades para oferta de turmas de mestrado e doutorados no Estado do Amazonas

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UTILIZAÇÃO DE DUTOS DESCARTADOS DO GASODUTO COARI-MANAUS PARA CONFECÇÃO DE PONTE PROVISÓRIA SOBRE O IGARAPÉ DO CEDRO SEGUNDO A NORMA API 5L X70
(Universidade Federal do Pará, 2010) SANTOS, Doriel Andrade dos; FARIA, Marlene de Araújo
This study aims to present an alternative construction method using discarded API 5L X70 pipelines from the Coari-Manaus gas pipeline for the construction of a temporary bridge over the Cedro stream in the Amazon rainforest. The bridge facilitates material and worker transportation for the construction of the Compression Station – ECOMP in Juaruna. The ANSYS 8.0 program was used to analyze the structural behavior of a bridge element, applying numerical methods to evaluate stress and deformation in structural components. Additionally, an environmental mitigation proposal is presented to reduce the impact of equipment crossing the Cedro stream, as well as the logistical challenges faced by companies operating in the Amazon region.
Sistema para Tomada de Decisão na Programação de Produção de Celular e Modem, Utilizando Lógica Fuzzy
(Universidade Federal do Pará, 2010) SILVA, Carlos Américo de Souza; COSTA JUNIOR, Carlos Tavares da
The objective of this paper is to present a model using fuzzy logic, which seeks to assist the process of making decision as to which product should have priority in scheduling of the manufacturing process where there are two classes of products (WCDMA Modem and Mobile Phone). With this, it aims to identify particularities and characteristics of the productive processes, creating a better sequencing of production, whose master plan of production will be able to meet demand according to market fluctuations. The main purpose of the proposed system is to assist professionals in industrial planning to determine which products should be prioritized in the production line based on manufacturing characteristics, such as delivery time, cycle time, production process, and margin contribution, creating a production program best suited to the reality of the organization, in other words, optimizing existing resources and increasing profits.
Metodologia para Diagnosticar a Qualidade de Energia Elétrica Referente à Distorção Harmônica em Sistema Trifásico de Baixa Tensão Utilizando Lógica Fuzzy
(Universidade Federal do Pará, 2010) GONÇALVES, Benevaldo Pereira; COSTA JÚNIOR, Carlos Tavares da
This work emphasizes the importance of monitoring and diagnosing the quality of electric power from the viewpoint of harmonic distortion present in the electrical installation in low voltage three-phase system using a methodology to analyze and diagnose the level of harmonic disturbances evaluating the overall indicator of distortion Harmonic (THD), supported by an expert system based on a Fuzzy inference system.
INFLUÊNCIA DE INCRUSTAÇÕES NA EFICIÊNCIA DE TROCADORES DE CALOR: O CASO DA PERDA DE PRODUTIVIDADE EM HIDRELÉTRICAS
(Universidade Federal do Pará, 2011) LOPES, Antonio Dimael de Almeida; MACÊDO, Emanuel Negrão
Heat exchangers are widely used in industrial processes and various applications. In hydroelectric power plants, they are essential for cooling key components, employing open cooling systems that draw water directly from reservoirs. However, this method can lead to fouling buildup, reducing equipment efficiency and impacting productivity. This study evaluated whether the application of an automated mechanical cleaning process could minimize or eliminate efficiency loss in heat exchangers used in hydro generator cooling systems. The research showed that periodic removal of fouling significantly improves thermal efficiency and reduces unplanned shutdowns in hydroelectric plants.
SIMULAÇÃO COMPUTACIONAL NO AUXÍLIO À TOMADA DE DECISÃO NOS PROCESSOS INDUSTRIAIS: UTILIZANDO A FERRAMENTA TECNOMATIX PLANT SIMULATION 9.0
(Universidade Federal do Pará, 2011) SANTOS, Eliton Smith dos; QUARESMA, João Nazareno Nonato
Currently, there are numerous automated production processes that are becoming increasingly complex due to the demands of the modern world. These processes require increasingly powerful engineering tools for efficient modeling and analysis. In this context, the computational tool Tecnomatix Plant Simulation 9.0 emerges as a means of optimizing industrial production. This study presents the application of this tool in modeling and simulating a production line, highlighting its relevance for production management by reducing costs and maximizing profits. The approach is demonstrated through a case study in the electronics industry, analyzing process efficiency and proposing improvements for time and resource optimization.
GERENCIAMENTO DO SUPRIMENTO DE ÓLEO COMBUSTÍVEL PARA USINA TÉRMICA NO AMAZONAS ATRAVÉS DE SISTEMAS INTELIGENTES
(Universidade Federal do Pará, 2011) SILVA NETO, Almiro Gomes da; FARIA, Marlene Araujo de
The objective of this work is to develop a computational tool for decision support in the supply of fuel oil for thermal power plant, examining the main variables of thermal generation using fuel oil and the entire logistical process. The basis for the study is on the operating principle of a thermal plant, the logistics of fuel and its peculiarities. The current supply management and all procedures involved in this process give support for the proposed innovation. The case study consists of a simulation system for managing oil supply through a mathematical simulator to confirm the optimal inventory solution through fuzzy logic. The development of the computational tool for decision support in the new requests of fuel oil includes the characteristics indicated by the users as an interface for easy understanding, operation, and fast processing of information to predict the best time to request a new shipment of oil.
UTILIZAÇÃO DO ALGORITMO NO CEP E SUA CONFIABILIDADE NOS PROCESSOS INDUSTRIAIS, APLICADO EM CONTROLE DE TORQUE: ESTUDO DE CASO DO PÓLO DE DUAS RODAS
(Universidade Federal do Pará, 2011) ALENCAR, David Barbosa de; LIMÃO, Roberto Célio
The use of Statistical Process Control (SPC) is crucial in the production process, requiring continuous improvement. However, there is resistance to adopting new methodologies. The use of computational tools in SPC has become an essential trend. This dissertation aims to guide companies and institutions in adopting such tools, presenting an algorithm to optimize SPC application. Statistical techniques are employed to validate process security, demonstrating that SPC is a management tool that enables measuring product and service quality, comparing them to desired standards, and implementing corrective actions. The proposed approach is illustrated through a case study in the two-wheel industrial sector.
OS IMPACTOS NA QUALIDADE DA ENERGIA ELÉTRICA ORIUNDOS DAS LÂMPADAS FLUORESCENTES COMPACTAS INSTALADAS NO PROGRAMA LUZ PARA TODOS
(Universidade Federal do Pará, 2012) NEVES, Cleonor Crescêncio das; COSTA JUNIOR, Carlos Tavares da
The Brazilian Federal Program "Luz para Todos" provides installation kits that include three 15W compact fluorescent lamps in beneficiary households. These lamps exhibit a high level of harmonic distortion due to their auxiliary equipment. This study assesses the impact of these lamps on power quality by analyzing the injection of harmonics into distribution networks. Measurements of Total Harmonic Distortion (THD) were conducted, extending the analysis to a real distribution system operated by the CELPA utility company. The results indicate high levels of THD, significantly affecting the quality of power supplied to consumers.
AUTENTICAÇÃO BIOMÉTRICA BASEADA NA DINÂMICA DA DIGITAÇÃO EM APARELHOS DE TELEFONIA MÓVEL
(Universidade Federal do Pará, 2012) MATTOS, Edma Valléria Cunha Urtiga de; OLIVEIRA, Roberto Célio Limão de
This paper proposes a new approach to biometric authentication based on keystroke dynamics in mobile devices. The methodology is easily accessible and can be used by anyone familiar with mobile phones. Users store their information in the system, creating an access account. During password entry, the system tracks the time taken to press and release keys and compares these parameters with stored data. If the patterns match, the user is authenticated; otherwise, access is denied. The study analyzed parameters such as input capture time, individual user models, and ideal thresholds. This approach enhances security, ensuring that even if an impostor knows the password, only the legitimate user can gain access.
OTIMIZAÇÃO DO TEMPO DE TESTE FUNCIONAL DE PLACA DE CIRCUITO IMPRESSO MONTADA PARA COMPUTADOR PESSOAL
(Universidade Federal do Pará, 2012) OLIVEIRA, Edson Farias de; BLANCO, Cláudio José Cavalcante
The increasing competitiveness among companies in the same sector has made continuous process optimization essential to reduce costs. This study evaluates the time involved in the functional testing phase of motherboards produced in the Industrial Pole of Manaus and proposes improvements for optimization. A system for image capture was developed to analyze idle times, along with test devices and a proprietary Linux-based test system, replacing the previous system that depended on foreign suppliers. Percentage gains were demonstrated through four optimization proposals: unifying tests, performing simultaneous tests on two boards, replacing the test system, and automating the test device. The results obtained after implementing these improvements were positive, reinforcing the importance of applying scientific methodologies combined with innovation to optimize production processes.
AVALIAÇÃO DA CAPACIDADE DE CARGA GEOTÉCNICA E RECALQUE DE ESTACAS HÉLICE CONTÍNUA MONITORADA EM UM EDIFÍCIO DE RIO BRANCO – AC
(Universidade Federal do Pará, 2013) DAMASCENO, Davi Luiz Gruhn; ANJOS, Gérson Jacques Miranda dos
This dissertation evaluates the geotechnical load capacity and settlement of Continuous Flight Auger (CFA) piles used in the construction of the Federal Police Superintendency (DPF/AC) in Rio Branco, Acre. The building comprises three blocks separated by expansion joints, featuring a basement, four floors, an engine room, and a heliport. The foundations include isolated footings and CFA piles, with the latter being the focus of this study. Using soil stratigraphy and NSPT data from SPT boreholes, a computational program was employed to assess the geotechnical load capacity of the piles using various methodologies, including Aoki & Velloso (1975), Monteiro (1997), Kárez & Rocha (2000), Antunes & Cabral (1996), Gotlieb et al. (2000), and Décourt & Quaresma (1978/1996). Settlements were estimated using the Pile Settlement Calculation (Module 15) software, which applies Aoki & Lopes’s (1975) method. Results showed a wide variation between the methods analyzed, leading to pile depths lower than those in the original design. The estimated settlements ranged from 1 to 8 mm, and the angular distortion between contiguous piles did not compromise the building’s functionality.
TÉCNICAS DE REFORÇO ESTRUTURAL PARA EDIFICAÇÕES ANTIGAS. ESTUDO DE CASO NA CIDADE DE RIO BRANCO – ACRE
(Universidade Federal do Pará, 2013) AMORIM, Denis Cley de Souza; OLIVEIRA, Dênio Ramam Carvalho de
This study aims to demonstrate the design and calculation verification based on NBR 6118 (ABNT, 2007) for reinforced concrete columns, focusing on structural reinforcement techniques for old buildings. Methods such as concrete jacketing, steel profiles, steel plate bonding, and carbon fiber-reinforced polymers (CFRP) were identified and analyzed. The case study of the revitalization of a historic building in Rio Branco - Acre demonstrated that the applied reinforcement technique increased the load-bearing capacity of the strengthened columns.
ESTUDO DO PROCESSO DE SOLDAGEM DE CONECTORES HDMI EM PLACAS DE NOTEBOOK
(Universidade Federal do Pará, 2014) VIEIRA, Antonio da Silva; FUJIYAMA, Roberto Tetsuo
Derived from broader studies on improvements in the manufacturing processes of electronic products and computer hardware, this research aims to technically evaluate the weldability quality of the HDMI connector in the soldering process of Printed Circuit Boards (PCB) in notebooks. The study seeks to meet international acceptability criteria related to the solder fill of terminal components using Pin Through-Hole (PTH) technology, as specified in the IPC-A-610D standard. For the development of this research, the PDCA (Plan, Do, Check, Action) method was adopted, commonly used as a tool for problem-solving and continuous improvement in various industrial sectors. The analysis using X-ray inspection and metallographic cross-section tests demonstrated that the HDMI connector soldering process using reflow soldering showed better quality than manual soldering, ensuring product reliability. Based on the results achieved, the company in this study replaced manual soldering with SMT technology, employing the Pin in Paste (PIP) and reflow soldering processes.
Análise de Tensões Residuais e Flechas em Soldas Planas de AISI 1020 Através de Ensaios de Tração, Microdureza Vickers e Mediçõees por Passe
(Universidade Federal do Pará, 2014) SANTOS, Carlos Augusto Cayres; FUJIYAMA, Roberto Tetsuo
Temperature in the Heat Affected Zone (HAZ) changes according to its position, with time, and cooling conditions during solidification. This variation in temperature can produce phase changes along the crystalline structure and thermal dilatations that originate welding residual stresses. In this work, deflection per passes was analyzed with height measurements, residual stresses in Base Metal (BM) were analyzed with tension tests, in the Heat Affected Zone (HAZ) and Fusion Zone (FZ). The variation through-thickness inside the Heat Affected Zone (HAZ) region was evaluated using Vickers microhardness tests for four different welds: the first one without restraints, the second fully restrained, the third with parallel restrictions on the weld bead, and the fourth with perpendicular restrictions to the weld bead. The results for each weld allowed modeling the deflection through linear adjustments, determining the stress profile according to the type of restraints adopted, the region in which the welded joint shall fail, and identifying regions that present beneficial or harmful stresses according to the type of restrictions and loading. The study concluded that deflection can be mathematically modeled as a welding pass function, and residual stresses observed in the HAZ and Fusion Zone (FZ) increase through thickness.
ANÁLISE DA USINABILIDADE DA LIGA AL-7%SI SOLIDIFICADA EM UM SISTEMA UNIDIRECIONAL HORIZONTAL
(Universidade Federal do Pará, 2014) GUIMARÃES, Charles Bispo; SILVA, Maria Adrina Paixão de Souza da
Machining is one of the most widely used manufacturing processes, with metals and alloys forming a large percentage of machined materials. During machining, a significant amount of energy is converted into heat, making the cutting temperature a crucial factor. However, few studies assess the influence of the workpiece structure on the cutting temperature. In this context, the relationship between processing, structure, and material properties is critical, as the solidification structure directly affects machinability. This study investigates the influence of thermal parameters and secondary dendritic arm spacing (λ2) of an Al-7wt%Si alloy solidified in a horizontal directional solidification system on cutting temperatures obtained during turning. A significant increase in cutting temperature was observed in all tests, followed by a slight decrease at the end of the process. Furthermore, experimental power function laws relating cutting temperature with cooling rate, solidification rate, and secondary dendrite arm spacing were developed.
ZONEAMENTO DE RUÍDO: PROPOSTA DE CURVAS DE RUÍDO APLICADAS AO AEROPORTO INTERNACIONAL DE MANAUS/EDUARDO GOMES
(Universidade Federal do Pará, 2014) NASCIMENTO, Clive Reis do; MENDES, Ronaldo Lopes Rodrigues; OLIVEIRA, Dênio Ramam Carvalho de
Noise pollution is an environmental issue that can significantly impact the population’s quality of life. Aircraft noise, generated by engines and aerodynamics, can be mapped through noise curves and used for the development of a Noise Zoning Plan (NZP). With the publication of RBAC No. 161, the NZP of Manaus/Eduardo Gomes International Airport became obsolete. This study used operational airport data and the INM software to generate new noise curves at levels of 85, 80, 75, 70, and 65 dB(A). Compared to previous curves, the new ones cover a 43.58% larger area and a 193% larger population, including four additional schools. Municipal legislation does not cover all affected areas, suggesting the need for adjustments to comply with RBAC No. 161 requirements.
ANÁLISE DO ACÚMULO DE MATERIAIS ORGÂNICOS NAS ESTRUTURAS NAVAIS DOS TERMINAIS HIDROVIÁRIOS: ESTUDO MULTICASO – ELEMENTOS DE GESTÃO AMBIENTAL
(Universidade Federal do Pará, 2014) HARTZ, Alessandra Guimarães; MENDES, Ronaldo L. R.
This study aimed to diagnose the causes of the recurrent problem of organic material accumulation in naval structures of waterway terminals in Manacapuru/AM, Humaitá/AM, Parintins/AM, and Manicoré/AM, already installed. This issue arises because the projects for these structures do not consider the fluvial water system and regional geography. Many of these terminals are under construction, while others are already operating but face difficulties, especially during flood seasons, due to the accumulation of organic matter in their structures. The methodology included bibliographic and documentary research. Given this context, the study suggests that authorities seek efficient solutions with designers to mitigate environmental damage and raise awareness about this issue in future projects. An immediate, efficient, and low financial impact solution for the Union is needed.
CONCRETOS FABRICADOS COM AGREGADOS GRAÚDOS DISPONÍVEIS EM SANTARÉM E REGIÃO OESTE DO PARÁ
(Universidade Federal do Pará, 2015) MAIA, Carlos Tadeu Arantes; SOUZA, Paulo Sérgio Lima
The study examines structural concrete production using different coarse aggregates available in Santarém, analyzing fresh and hardened state properties. Gravel, pebble, and quebradinho were tested with three water/cement ratios (0.74, 0.54, and 0.41). Results showed lower water consumption with pebble and higher final strengths with gravel. A cost analysis highlighted the economic advantage of quebradinho for 20 and 30 MPa concretes. Findings support the feasibility of using local aggregates in concrete production.
ESTUDO DE CASO DO ABASTECIMENTO D’ÁGUA DO MUNICÍPIO DE SANTARÉM NO PARÁ
(Universidade Federal do Pará, 2015) ANDRADE, Elen Conceição Leal de; MENDES, Ronaldo Lopes Rodrigues
This work addresses the water supply in the municipality of Santarém, Pará, and the various factors that directly affect the population's use of this resource. The main objective was to assess water usage in the supply sector, quantifying and qualifying its various forms to contribute to sustainability indicators. Currently, the municipality is supplied by the Pará Sanitation Company (COSANPA) and the Municipal Supply Secretariat (SEMAB). The research was conducted in three stages: literature review, field survey, and result analysis. Findings indicated that most of the population does not waste water, although the absence of water meters makes accurate consumption measurement difficult. Water quality was rated as average by 21.57% of respondents, while 33% reported frequent water shortages, leading part of the population to rely on private wells. The study concludes that understanding these findings can contribute to future projects aimed at improving water supply in the municipality.
A Sílica Livre Cristalizada e as Condições de Trabalho em Santarém-PA
(Universidade Federal do Pará, 2015) CAVALCANTE, Clarissa Maciel; POMPEU NETO, Bernardo Borges
Silica (SiO₂) is one of the most abundant elements in the Earth's crust, and in its crystalline form, it is toxic to humans, potentially causing silicosis and even cancer with prolonged exposure. This study investigates working conditions in marble workshops in Santarém-PA and the risks of exposure to crystalline silica. The research involved visits to four companies in the sector, using the Ministry of Labor and Employment’s Reference Manual for Marble Workshops as an evaluation tool. The results indicate a lack of worker training and misinformation about occupational hazards. Collective protection measures, such as wet-cutting machines, are adopted but not strictly enforced. Personal protective equipment is provided but not consistently used. The study concludes that exposure to free crystalline silica in the region’s marble workshops is high and poses a significant health risk to workers. It emphasizes the need for surveillance actions and further investigations to improve working conditions and worker health protection.