Artigos

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

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Aspectos Importantes na Utilização de Bombas Centrífugas em Velocidade Variável para a Redução do Consumo de Energia
(Instituto de Tecnologia, 2006) MESQUITA, André L. Amarante; SILVA, Lázaro J. S. da; ABRAHAM JÚNIOR, Otávio; PEREIRA, José Almir; R. SILVA, Aldo Cezar P.; BATISTA, Clauderino da Silva
The study examines the use of variable speed centrifugal pumps as a solution to reduce energy consumption in water supply systems. It covers theoretical principles, technological aspects, and economic feasibility, employing frequency inverters to adjust flow according to demand. Two case studies illustrate the method's effectiveness: parallel pump operation and tank level control. Results show significant energy savings with short financial payback, emphasizing the need for technical and economic analysis for implementation.
Dust exhaustion systems in the aluminum industry – reference data and design methodology definition problems
(INSTITUTO DE TECNOLOGIA, 2007) TREJO, Antonio Mauricio Martelli; VASCONCELLOS, Mauro Fernandes; MESQUITA, André Luiz Amarante.; MAGALHÃES, Edilson Marques
The study addresses challenges in designing dust exhaustion systems for the aluminum industry, emphasizing the lack of reference data for specific equipment and process emissions. Methodologies for calculating air flow and pressure drop in exhaust systems are reviewed, with a focus on pneumatic conveying of particulates. The work proposes an improved methodological approach based on hydrodynamic models and presents real-world case studies, such as coke loading/unloading systems and alumina feeding in potlines. Conclusions include recommendations for optimizing system performance.
Reciclagem do resíduo da estação de tratamento de efluentes da indústria de injeção de plástico na indústria de cerâmica vermelha
(INSTITUTO DE TECNOLOGIA, 2009) JIMENEZ, I. J.; SOUZA, J. A. S; BRITO, F. S. de.; Eduardo de Magalhães Braga
The study investigates the feasibility of recycling waste from plastic injection industry effluent treatment stations by incorporating it into red ceramic production. Mixtures with 2%, 5%, and 10% waste relative to clay were evaluated, analyzing properties such as density, porosity, and flexural strength. The results indicate that the waste positively influences solid-state reactions, enhancing some mechanical properties of ceramic products, especially at concentrations up to 5%. The research presents a sustainable alternative for industrial waste disposal, aligned with environmental demands.
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.
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.
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.
Analysis of lubricating oil in internal combustion engines of electrical power generation plant. Subtítulo: Análisis de aceite en motores de combustión interna estacionarios de planta de generación de energía eléctrica.
(Instituto de Tecnologia, 2010) SANTOS, Gilbert Queiroz dos; LEITE, Jandecy Cabral; BRASIL, Davi do Socorro Barros
The article presents the application of Fuzzy Logic in the inventory management of a public organization, aiming to reduce material shortages caused by lead time. The study proposes a system based on linguistic variables such as stock level and demand, using membership functions and fuzzy rules to assist in decision-making regarding supply, replenishment, and bidding. The results demonstrate the method's feasibility for optimizing inventory control and minimizing costs.
Aplicação de Filtro Harmônico em Sistemas Elétricos de Baixa Tensão utilizando Lógica Fuzzy
(Instituto de Tecnologia, 2010) CIRINO, Weverson dos Santos; LEITE, Jandecy Cabral; COSTA JUNIOR, Carlos Tavares da; TOSTES, Maria Emilia de Lima; QUARESMA, João Nazareno Nonato
The article discusses the application of passive harmonic filters in low-voltage electrical systems to mitigate distortions caused by harmonics, using Fuzzy Logic. The proposed algorithm analyzes and detects harmonic components exceeding 5% of the fundamental coefficient, designing customized filters. The methodology includes computational simulations and validation according to IEC standards, demonstrating effectiveness in reducing distortions and improving power quality.
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.
AVALIAÇÃO DOS SISTEMAS LOGÍSTICOS PARA ADEQUAÇÃO DE WIP NAS INDÚSTRIAS DE ELETRO-ELETRÔNICOS DO POLO INDUSTRIAL DE MANAUS
(Instituto de Tecnologia, 2010) VILHENA, Fábio André de Farias; SOARES, José Josimar; BATISTA, Clauderino da Silva
This work studied a method of economic viability between transport modes for electro-electronic inputs between Asia and Manaus, aiming to choose the best alternative based on cargo weight and unit value, seeking to improve the competitiveness of companies in the Manaus Industrial Pole (PIM). Transport times, costs, intermodal and multimodal interactions were analyzed using indicators such as Future Liquid Value (VFL) and Efficiency/Cost (E/C). It was concluded that the maritime mode is more viable for cargo with values below 50R$, while high-value cargo requires specific analysis between air, multimodal, and maritime modes.
Estudo dos Calços Infláveis de Filmes de Polietileno (PE) como substitutos dos Calços de Poliestireno (EPS) utilizados hoje nas Embalagens de Produtos Eletroeletrônicos
(INSTITUTO DE TECNOLOGIA, 2010) OLIVEIRA, Macêdo Santos de; SILVA, José Antônio S.; LOPES, Antônio Dimael de Almeida; MONTEIRO, Alberto de Castro; DELON, José Alain; Prof Dr. Walter Barra Junior
"This ongoing research involves a study using various types of nationally produced polyethylene (PE) films with different thicknesses to be applied as air cushions for protective padding in electronic product packaging. The aim is to replace the commonly used expanded polystyrene (EPS) padding with inflatable PE padding, which offers advantages such as lower cost, efficiency, low manufacturing cost, excellent mechanical performance, and full recyclability. The study compares the two types of padding in terms of logistics, storage, cost, and production efficiency."
Metodologia de avaliação da qualidade do ruído no posto de trabalho baseada em lógica fuzzy
(INSTITUTO DE TECNOLOGIA, 2010) NOGUEIRA, Maria Amélia Costa Saraiva; COSTA JÚNIOR, Carlos Tavares da; LEITE, Jandecy Cabral.; Prof. Dr. Rui Guilherme Cavaleiro de Macedo Alves
This paper proposes a methodology based on fuzzy logic to evaluate noise quality in industrial workplaces, considering variables such as noise level and working hours. The model uses membership functions and fuzzy rules to classify the environment as "satisfactory" or "at risk." The application of the method in a metalworking industry demonstrated its effectiveness in identifying unhealthy conditions, contributing to the prevention of occupational health problems.
Redução do consumo de energia elétrica em Manaus através de medidas de eficiência energética em climatização industrial
(INSTITUTO DE TECNOLOGIA, 2010) SILVA, Jorge Lúcio da; LEITE, Jandecy Cabral; COSTA JUNIOR, Carlos Tavares da; Jandecy Cabral Leite
The article evaluates the impacts of reducing electricity consumption in a company at the Manaus Industrial Hub (PIM) through the optimization of energy efficiency (EE) in industrial air conditioning systems, using Fuzzy Logic as a basis. Measures such as replacing low-efficiency air conditioners with high-efficiency equipment, controlling external heat sources, checking pipeline losses, and adjusting thermal comfort temperature were implemented. The results showed significant reductions in energy consumption and contracted demand, demonstrating the economic and technical feasibility of the adopted measures.
Sistemas de Gerenciamento de Energia e M&V como Ferramentas de Eficiência Energética na Indústria.
(INSTITUTO DE TECNOLOGIA, 2010) SOARES, G. T.; SOARES, T. M.; TOSTES, M. E. L.; MAGALHÃES, Edilson Marques
The article discusses energy management as a tool for energy efficiency in the industrial sector, focusing on energy consumption in production processes. It proposes the implementation of measurement, control, and diagnostic devices to optimize electricity use, highlighting the measurement and verification (M&V) methodology to assess savings. Results show significant energy consumption reduction in a plastics industry, with estimated annual savings of R$ 39,941.29.
Sistema para tomada de decisão na programação de produção de Modem e Celular, utilizando lógica fuzzy
(INSTITUTO DE TECNOLOGIA, 2010) SILVA, Carlos Américo de Souza; LEITE, Jandecy Cabral; JÚNIOR, Carlos Tavares da Costa; MAGALHÃES, Edilson Marques
The paper presents a model based on fuzzy logic to assist in decision-making regarding the prioritization of products (3G Modem and Mobile Phone) in industrial production scheduling. The system considers parameters such as delivery time, cycle time, production process, and contribution margin, aiming to optimize sequencing and meet market demands. The goal is to reduce costs and increase organizational profitability.
Monitoramento da Produtividade
(INSTITUTO DE TECNOLOGIA, 2010) FERREIRA, M. S.; LEITE, J. C; LAGO NETO, J. C; JÚNIOR, C. T. C.; Profª. Drª Aline Maria Meiguins de Lima
The article proposes a productivity monitoring model for an LCD production line, combining the Six Sigma methodology and fuzzy logic. The study was conducted in a company from the Manaus Industrial Hub, showing that the model is effective for measuring and increasing productivity, achieving the company's target of 120%. The integrated approach enabled data-driven decision-making based on quantitative and qualitative inputs, with results validated through computational simulation.
Lógica fuzzy aplicada ao estudo da qualidade de energia elétrica em um sistema com distorções harmônicas através do fator de potência
(INSTITUTO DE TECNOLOGIA, 2010) BRITO JÚNIOR, Jorge de Almeida; LEITE, Jandercy Cabral; COSTA JÚNIOR, Carlos Tavares da; TORRES, Maria Emília de Lima; MAGALHÃES, Edilson Marques
This paper presents the study of a low-voltage three-phase system with harmonic distortion using fuzzy logic applied to the power factor. The objective is to reduce losses in the installation, voltage drops, and underutilized capacity, optimizing electricity usage and providing benefits to both the company and the utility.
Estratégias para logística de suprimento de KITs de produtos de informática em uma empresa do Pólo Industrial de Manaus - PIM
(INSTITUTO DE TECNOLOGIA, 2010) FREITAS, Carlos Alberto Oliveira de; OLIVEIRA, Edson Farias de; OLIVEIRA, Haroldo Melo de; SOUZA, João Carlos Rodrigues de; MAGALHÃES, Edilson Marques
The article examines logistics strategies for supplying IT product kits in the Manaus Industrial Hub (PIM), focusing on transport modal choices (maritime, multimodal, and air) amid regional challenges and the 2008 financial crisis. The studied company initially adopted multimodal transport (Sea/Air) but switched to air freight due to customs delays and material shortages, ensuring speed despite higher costs. The study evaluates service dimensions (speed, consistency, capability, availability, and frequency) and underscores the role of logistics planning in maintaining PIM’s competitiveness.
Metodologia de diagnóstico de manutenção baseada em condição de enrolamentos estatóricos em hidrogeradores
(INSTITUTO DE TECNOLOGIA, 2010) SANTOS, Renato Lelio da Silva; OLIVEIRA, Roberto Célio Limão de; LEITE, Jandecy Cabral; Edilson Marques Magalhães
This paper presents a methodology applied at the Balbina Hydroelectric Power Plant to diagnose faults in stator windings of hydro generators, using partial discharge monitoring as a predictive maintenance tool. This technique enables the identification of insulation deterioration and supports decision-making based on reliable data, reducing costs, increasing reliability, and avoiding unnecessary maintenance. The methodology allows for more effective maintenance planning, extending equipment lifespan.
Sistema para tomada de decisão na mensuração do nível de Produtividade Industrial: estudo desenvolvido com lógica fuzzy
(INSTITUTO DE TECNOLOGIA, 2010) SANTOS, E. S.; NOGUEIRA, R. A.; LEITE, J. C.; JÚNIOR, C. T. C.; Eduardo de Magalhães Braga
The study employs a computational tool to model human reasoning in measuring productivity levels in an electro-electronic industrial line at the Manaus Industrial Pole (PIM). Parameters such as balancing, cycle time, reliability, failure rate, and productive capacity were identified and analyzed. The proposed system is significant for production management professionals, aiming to reduce costs and maximize profits.