Artigos

URI permanente para esta coleçãohttps://rigalileo.itegam.org.br/handle/123456789/219

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A aplicação da lógica fuzzy para avaliação do produto canote do garfo
(Instituto de Tecnologia Galileo da Amazônia, 2010) SANTOS, Ruy Sidney Nascimento dos; COSTA JÚNIOR, Carlos Tavares da; COSTA JÚNIOR, Carlos Tavares da
With technological advancements, the engineering sector has been seeking solutions that offer positive results for the growth of their companies or organizations. Simulation methods for evaluating the mechanical behavior of products subjected to static and dynamic loads are extremely necessary to reduce manufacturing costs. The use of mechanical and virtual tests is of vital importance for product evaluation. This study aimed to apply fuzzy logic to a product called the bicycle fork steerer tube, analyzing both the degree of membership varying between 0 and 1 and the degree of truth also varying between 0 and 1, with the main focus on the behavior of the steerer tube and its validation.
A Construção das Usinas no Rio Madeira em Rondônia e os Impactos no Município de Porto Velho: Uma Abordagem Socioeconômica e Ambiental
(Universidade Federal do Pará, 2013) ROCHA, Gilberto de Miranda; BRITO, Sâmia de Oliveira; LEITE, Jandecy Cabral
This article seeks to present, among the various impacts, especially the socioeconomic and environmental ones caused by the construction of the Santo Antônio and Jirau Hydroelectric Plants in the State of Rondônia, as well as to measure the positive and negative aspects pointed out in the capital Porto Velho, following their respective installations. During the research, some important aspects previously analyzed in the EIA (Environmental Impact Assessment) of these plants will also be discussed, where the RIMA (Environmental Impact Report) later confirms that the implementation and operation of the plants generate significant environmental damage, although the report mentions that these impacts are repairable through compensation for the social, economic, and environmental development of the region.
A Falha da Utilização do Ciclo de Deming no Monitoramento dos Processos em uma Indústria Metalúrgica
(INSTITUTO DE TECNOLOGIA, 2015) ALBUQUERQUE, Ananélia Claudia Rodrigues de Queiroz; LEITE, Jandecy Cabral; CARVAJAL, Tirso Lorenzo Reyes; OLIVEIRA, Rosimeire Freires Pereira; OLIVEIRA, Sidney dos Santos; Eduardo de Magalhães Braga
The study examines the application of the Deming Cycle (PDCA) in monitoring the production processes of a metallurgical company in the Manaus Industrial Pole (PIM). Through direct observation, questionnaires, and interviews, it was found that although the PDCA is used in strategic planning, its monitoring phase (Check) is not effectively implemented, leading to high rates of defective parts and increased production costs. The research emphasizes the need for rigorous follow-up of PDCA stages to ensure continuous improvements and operational efficiency.
A Gestão de Recursos Hídricos: A Política Nacional de Recursos Hídricos X Prosamim
(Universidade Federal do Pará, 2014) BRITO, Sâmia de Oliveira; ROCHA, Gilberto de Miranda; LEITE, Jandecy Cabral
When addressing the issues of Prosamim, its main objective, which is the revitalization of the igarapés (streams) areas in the city of Manaus/AM, can be exposed. Within this context, the specific objectives of the program can also be determined, divided into four dimensions: social, engineering, environmental, and institutional. Each dimension presents its relevance to the program, as well as shows, based on records during technical visits, the needs for its development throughout all phases of the program, which will be listed in the course of the article. This article is based on a case study from a literature review, followed by technical visits to the Prosamim Complex, with reports from resettled residents, as well as records of all the areas that compose it.
A otimização de filtros passivos de harmônicos em sistemas elétricos industriais
(Universidade Federal do Pará, 2015) LEITE, Jandecy Cabral; ABRIL, Ignacio Pérez; AZEVEDO, Manuel Socorro Santos; TOSTES, Maria Emilia de Lima; BEZERRA, Ubiratan Holanda; NASCIMENTO, Manoel Henrique Reis
This article presents an analysis of the evolution of optimization formulations for passive harmonic filters in industrial power systems, highlighting the transition from single-objective to multi-objective formulations. Optimization methods such as Sequential Quadratic Programming (SQP), Simulated Annealing (SA), Differential Evolution (DE), Artificial Neural Networks (ANN), Particle Swarm Optimization (PSO), and Genetic Algorithms (GA), among others, are discussed. The work shows how formulations have evolved to better represent the complexity of the problem, considering more comprehensive objective functions and constraints.
A Utilização da Automação como Solução dos Problemas Ergonômicos em Prensas Hidráulicas de Estampagem de Peças Metálicas
(Universidade Federal do Pará, 2010) OLIVEIRA, Macêdo Santos de; SILVA, José Antônio S.; DELON, José Alain; NASCIMENTO, Manoel Henrique Reis
This article presents a study on the use of automation in a metal parts factory that uses hydraulic presses for stamping. The goal is to reduce the number of operator absences due to occupational diseases, such as RSI/WMSD, caused by repetitive efforts and inadequate postures. Automation was implemented to improve the ergonomic conditions of workstations and increase production. The study shows that automation reduces costs related to absences and increases production efficiency.
Acúmulo de Materiais Orgânicos nas Estruturas Navais dos Terminais Hidroviários de Manicoré, Parintins, Manacapuru e Humaitá no Estado do Amazonas
(Universidade Federal do Pará, 2014) HARTZ, Alessandra Guimarães; MENDES, Ronaldo Lopes Rodrigues; ROCHA, Gilberto de Miranda; LEITE, Jandecy Cabral; NASCIMENTO, Manoel Henrique Reis
This study aimed to diagnose the causes of the recurring problem of organic material accumulation in the naval structures of the waterway terminals in Manacapuru, Humaitá, Parintins, and Manicoré, in the state of Amazonas. The study identified that the problem occurs because the project designs do not consider the fluvial water system and the geography of the region. During the flood season, the accumulation of organic matter in the terminal structures causes environmental and operational damage. The methodology used was bibliographic and documentary research, with a case study. It is concluded that an efficient and low-cost solution is needed to mitigate the effects of organic material accumulation.
Advantages of applying composite material to replace metal alloys in aviation
(INSTITUTO DE TECNOLOGIA, 2015) BARROS, Marcelo André Santiago; FUJIYAMA, Roberto Tetsuo; LEITE, Jandecy Cabral; MAGALHÃES, Edilson Marques
Composite materials were used by early agricultural societies and their adoption has been driven by military technological needs. High fuel costs and strict environmental regulations have increased the demand for this technology in the civil sector. This article presents the application advantages of composites in aircraft structures, especially regarding weight reduction, lower operational costs, and environmental, social, and economic impacts. The research includes literature review, experimental studies, and comparisons with traditional metal alloys.
Algoritmo para la Creación del Modelo Alámbrico de un Techo Fijo para Tanque de Almacenamiento de Combustible en Forma de Domo Geodésico Esférico
(Universidad Central “Marta Abreu” de Las Villas, 2015) CAMPOS PÉREZ, Yamilí Santiago; BLANCO, Ricardo Alfonso; LEITE, Jandecy Cabral; NASCIMENTO, Manoel Henrique Reis
This paper presents an algorithm for the creation of the wireframe model of a spherical geodesic dome, used as a fixed roof for fuel storage tanks. The geodesic dome is a structure composed of bars and nodes arranged along the edges and vertices of a polyhedron inscribed on a spherical surface. The proposed algorithm is based on the review and compilation of information from various researches, aiming to generate a geometric model for further resistance analysis by the finite element method. The work details the procedure and geometric expressions used, and presents a computer program developed to validate the algorithm.
An Approach for Life Cycle Assessment of Electricity Generation at Gas-HFO Internal Combustion Engines in a Central Station
(Universidad Central “Marta Abreu” de Las Villas, 2014) TOUSET, Juan-Pedro Hernández; LEITE, Jandecy Cabral; RICO, Iván-Leandro Rodríguez; FRANÇA, Alcimar de Jesus; DOMINGUEZ, Elena-Rosa; GUEDES, Oiama de Assis; JIMENEZ, Italo-Jorge Tavares; ARTILES, Arnaldo Herrera; GIL, Maylier Pérez; NASCIMENTO, Manoel Henrique Reis
This paper applies the Life Cycle Assessment (LCA) as an assessment tool to quantify the environmental impacts associated with electricity generation by internal combustion engines. Steps, resources, and/or supplies that have the greatest impacts during the life cycle of electricity generation are identified to contribute with measures of cleaner production in companies with similar power generation. The goal of this study is to evaluate the environmental impacts associated with the production of 1552 kWh of electricity by gas-HFO internal combustion engines, considering a scenario that responds to the use of lubricating oil, oily water treatment, collection, and transportation of sludge. The study of additives and contaminants from lubricating oil is included, taking into account that it is a complex task for life cycle inventory considering limitations to get data.
Análise da capacidade produtiva em uma linha de zincagem através de simulação de processos como ferramenta de apoio para tomada de decisão
(INSTITUTO DE TECNOLOGIA, 2015) LEITE JUNIOR, Jandecy Cabral; SILVA, Cristiano Magalhães da; HARRAQUIAN, Leandro; Jandecy Cabral Leite
This paper conducted a study of the production capacity of a galvanizing line in an electroplating factory at the Manaus Industrial Hub (PIM), using computer simulation (Plant Simulation) to identify bottlenecks, process efficiency, and daily production capacity. The results showed that simulation is an effective tool to support decision-making, enabling production optimization and enhancing the company's competitiveness.
Análise da qualidade da soldagem do componente conector HDMI Mother Board Laptop
(INSTITUTO DE TECNOLOGIA, 2015) VIEIRA, Antônio da Silva; COSTA, Robson Marques; FONSECA, Cristiano Mourão; FREITAS, Carlos Alberto de Oliveira; FUJIYAMA, Roberto Tetsuo; MAGALHÃES, Edilson Marques
This paper assessed the quality of HDMI connector component welding in laptop printed circuit boards (PCBs) based on IPC-A-610D standards. The study applied the PDCA method to identify and resolve issues related to insufficient solder barrel filling. Through X-ray analysis and metallographic tests, it was demonstrated that the automated reflow soldering process (SMT) meets normative requirements, effectively replacing the manual process.
Análise ergonômica aplicada aos processos industriais relacionada a trabalho em ambientes à altas temperaturas
(Universidade Federal do Pará, 2010) PINHEIRO, Jaqueline Silva de Souza; FARIAS, Marlene Araújo de; LEITE, Jandecy Cabral.; NASCIMENTO, Manoel Henrique Reis
The major industry sector in Manaus is represented by electro-electronic industries, but only a part of them has a suitable ergonomically workplace. In the case of metallurgic industries, their working conditions are not suitable due to a series of factors, such as exposure to high temperatures, which cannot be cooled, creating adverse conditions like thermal shock and fatigue. This paper's general goal is to describe the importance of preserving workers' mental and physical health in the workplace through ergonomics. The study presents improvement suggestions and advice that may contribute to solving ergonomic problems related to workers' health.
Análise ergonômica de um posto de trabalho numa linha de produção utilizando o método NIOSH – um estudo de caso no Polo Industrial de Manaus
(Universidade Federal do Pará, 2014) AGAHNEJAD, Payman; LEITE, Jandecy Cabral; OLIVEIRA, Roberto Celio Limão de.; NASCIMENTO, Manoel Henrique Reis
This article is aimed at making an ergonomic analysis of the job on an assembly line of the compressor based on real data production, using the method of NIOSH. Through research, analysis, and reporting procedures, it became possible to examine suggestions for reducing the problem that was addressed in this study. The main objective is to analyze the situation of the ergonomic product line focusing on the biomechanics of the work. The reason is because of the large outflow of workers due to health problems related to ergonomics, as one of the main problems they face is with handling and moving heavy loads, is the back pain, drifting in acute and chronic problems. The results allowed to draw conclusions that should have health care worker in the manufacturing environment and whose recommendation led to the elucidation of some biomechanical problems found.
Análise Ergonômica do Trabalho (AET) no Posto de Embalagem com Foco na Indústria de Produtos à Base de Plásticos
(INSTITUTO DE TECNOLOGIA, 2015) LIMA, Vilma Reges Tamioka; LEITE, Jandecy Cabral; SOUZA, José Antonio da Silva; MAGALHÃES, Edilson Marques
The study examines the application of Ergonomic Work Analysis (AET) in a pen packaging station within a plastic products industry, using tools such as the NIOSH equation and Moore & Garg criteria to assess risks of repetitive strain injuries (RSI/WMSDs). The PDCA method was employed to implement improvements, leading to reduced fatigue complaints and increased productivity. The research highlighted the effectiveness of ergonomics in process optimization and occupational health promotion.
Análise Ergonômica do Trabalho na Linha de Produção de Cabine de Teste da Empresa TAM
(INSTITUTO DE TECNOLOGIA, 2015) SILVA, Adriana Risuenho da; PÁSCOA, Michela de Freitas; MAGALHÃES, Tainá Diniz; Profa. Dra. Maria Adrina Paixão de Souza da Silva.
With the demands of the modern world, companies seek faster productivity to meet market demand. Workers often end up performing repetitive tasks with unfavorable postures and excessive force. This article analyzes an ergonomic flaw in the test cabin of a production line at TAM company and proposes workstation adaptations to minimize repetitive stress and improve worker health. The implemented improvements led to increased motivation and productivity.
Análise para diminuição das perdas no processo de Geração de Energia Elétrica da UHE - Balbina.
(Instituto de Tecnologia, 2010) ARTEGA, Roland Céspedes; BLANCO, Claudio José Cavalcante; LEITE, Jandecy Cabral.; QUARESMA, João Nazareno Nonato
This article presents an analysis to standardize the performance of the turbines at the Balbina Hydroelectric Plant, located in Amazonas, Brazil, focusing on reducing head losses caused by the obstruction of water intake screens by wood from the flooded forest. The study proposes the installation of a containment net to prevent debris accumulation, minimizing unplanned shutdowns and associated costs with replacement thermal generation.
Análisis de la Implantación de Programas de Mantenimiento Total Productivo y Mantenimiento Predictivo para Mejoras en la Producción de Energía.
(Instituto de Tecnologia, 2011) FONSECA JUNIOR, Milton; BLANCO, Claudio José Cavalcante; MEDEIROS, Adelson Bezerra de; LEITE, Jandecy Cabral; AZEVEDO, Manoel do Socorro dos Santos; ESTEVES, Anderson Fernandes; MACIEL, Paulo Henrique de Lima.; CUNHA, Edinaldo José de Sousa
This paper describes procedures related to the implementation of Total Productive Maintenance (TPM) and Predictive Maintenance (MP) strategies in an electric power generation plant. The developed methodology aims to optimize performance and introduce improvements in the energy generation process, based on a case study conducted at an Eletrobrás Amazonas Energia plant. The results include a reduction in Mean Time Between Failures (MTBF) and Mean Time To Repair (MTTR), demonstrating the effectiveness of the applied techniques.
Análisis de los Impactos Armónicos en la industria de la electrónica utilizando árboles de decisión.
(Instituto de Tecnologia, 2012) NOGUEIRA, Rildo de Mendonça; OLIVEIRA, Edson Farias de; SILVA, Waterloo Ferreira da; SANTANA, Ádamo L.; TOSTES, Maria Emília de Lima; SOARES, Thiago Mota.; BRASIL, Davi do Socorro Barros
This study analyzes the impacts of current harmonics on the electrical grid of an electronics industry in the Manaus Industrial Park, focusing on the manufacturing of computers, notebooks, and tablets. Using power quality analyzers and decision tree techniques, the work quantifies the total harmonic distortion (THD) and identifies the most impactful harmonics, such as the 5th and 7th orders, generated by non-linear loads. The results demonstrate the effectiveness of the applied methodology to anticipate future regulations and improve energy quality.
Análisis del Pronóstico de Ventas del Sector de Dos Ruedas Utilizando Métodos Estadísticos de Suavizado Exponencial
(INSTITUTO DE TECNOLOGIA, 2015) LIMA, Orlem Pinheiro de; SANTIAGO, Sandro Breval; RODRÍGUEZ, Carlos Manuel Taboada; Jandecy Cabral Leite
The study presents a demand forecasting analysis for a plastic injection industry in the Manaus Industrial Pole (PIM), using the Holt-Winters exponential smoothing method. Monthly sales data over 36 months (2010-2012) were analyzed, identifying additive seasonality patterns. The model was evaluated using Mean Absolute Percentage Error (MAPE) and Theil's U coefficient, demonstrating forecasting efficacy and emphasizing the importance of error analysis for continuous improvements.