Dissertações em Engenharia de Processos (Mestrado) - PPGEP/ITEC

URI Permanente para esta coleçãohttps://repositorio.ufpa.br/handle/2011/10053

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Agora exibindo 1 - 20 de 108

Acesso aberto (Open Access)
Influência da incorporação da lama de alto forno em massa cerâmica para a produção de telhas
(Universidade Federal do Pará, 2018-03-29) COSTA, Roberta Lima de Souza; CANDIDO, Verônica Scarpini; http://lattes.cnpq.br/8274665115727809
The use of residues in the clay-based ceramic composition for the production of ceramics has been widely studied, since a significant improvement in the chemical and physical properties of the final materials has been observed. The aim of this work is to evaluate the influence of the incorporation of 5 and 10 wt. % of blast furnace sludge into the clay slag, both from the state of Pará. The raw material and the waste were initially benefited in order to reduce the particle size and subsequently passed through a sieve with a mesh opening equal to #325. After this step, the residue and the raw material were submitted to FRX, EDS, XRD, TG / DTG, particle size distribution, MO, SEM and determination of plasticity and liquidity limits. Test specimens were prepared by uniaxial pressing of 20 Mpa for burning in a muffle-type laboratory oven at temperatures of 750, 850 and 950oC. MEA, PA, AA, RLQ and three-point flexural strength were evaluated. The microstructure of the burnt ceramics was evaluated by OM, MEV and XRD. The results showed that the blast furnace slurry consists predominantly of iron compounds, which contributes to the reddish placement in the sintered part. The residue presents a granulometry favorable to the addition in clayey mass, not altering the technological properties. Thus, it was concluded that the composition with addition of 5% of blast furnace sludge was the one that presented favorable results and required by standards for the manufacture of tiles.
Acesso aberto (Open Access)
Avaliação da sustentabilidade das cadeias de suprimento usando a escala likert e a lógica fuzzy
(Universidade Federal do Pará, 2019-01-25) MORAES, Glacimar Silva de; OLIVEIRA, Kleber Bittencourt; http://lattes.cnpq.br/3202890124751363; https://orcid.org/0000-0002-5998-5129
This work evaluates the Sustainability Index of supply chains, considering practices and organizational performance. To this end, the four component parts of the supply chains were identified in order to evaluate the Sustainability Index of each component part, as well as the Chain as a whole. The Likert Scale and the Fuzzy Logic were used in the evaluation context. The model was applied to a case study in a company in the city of Manaus. The results obtained were acceptable in relation to the reality of the company "ALFA", as well as recommendations were suggested to improve the company's Sustainability Index. The results obtained by the Excel tab and fuzzy logic were compared. The Chain Sustainability Index according to the Fuzzy System was 53.5, reaffirming that the Excel tab was 55.53, giving a difference of only 3.5%, demonstrating the validity of both systems developed to determine the Sustainability Index of the supply chain. Thus, both procedures analyzed allowed us to effectively calculate the Supply Chain Sustainability Index of any one company.
Acesso aberto (Open Access)
Análise da eficiência dos protetores auditivos utilizados na indústria da construção civil na cidade de Manaus
(Universidade Federal do Pará, 2019-02-20) AMORIM, Francisco Carlos Tavares; CUNHA, Edinaldo José de Sousa; http://lattes.cnpq.br/8714515962963079
The construction industry provides occupational hazards to workers at construction sites. Despite the mandatory use of personal protective equipment (PPE), noise is one of the occupational hazards that persist as one of the most damaging to workers. The causes may be inherent in the control, but also by the inappropriate choice of methods of hearing protector implantation as an individual control measure. This work aims to analyze the efficiency of hearing protectors, taking into account the octave band spectrum at the sound pressure levels of the main equipment used in the civil construction sector in the city of Manaus.
Acesso aberto (Open Access)
Caracterização dos parâmetros de qualidade de água do Rio Aurá, Belém-Pará: aplicação de índice de qualidade malasiano (DOE-IQA)
(Universidade Federal do Pará, 2019-05) RIBEIRO, Arthur Araújo; QUARESMA, Sil Franciley dos Santos; http://lattes.cnpq.br/6860112313500088
The intense urbanization, added to the populational growth, stimulates the development of activities that provoke environment impacts. Among the activities with great potential for pollution generation and contamination, it is observerd those related to the environmental sanitation”. This study breaches the caracterization of the “Physical-chemical” parameters of water quality in the “Aura” river. According to the CONAMA 357/2005. The field of study comprehends the area of the “Aura” upstream river. The work metodology consists in the realization of field samples, in target places distributed along it’s course, for the determination of the “physical-chemical” variables. The results show a direct relation with the populational growth and the dicharge of poluents throughout the working period of the landfill, observed important alterations in color, oxigen dissolution and concentration of amoniacal nitrogen, largerly above the stipulated by the actual resolution (CONAMA 357/2005 água classe II), suggesting great organic matter consumption , the application of DOE-WQI allowed the observation of the most impacted regions with discharge and the slurry’s percolation.
Acesso aberto (Open Access)
Aplicação do indicador overall equipment effectiveness (oee) para análise do desempenho global da capacidade produtiva de uma indústria madeireira
(Universidade Federal do Pará, 2019-05) SILVA, Adauto Correa da; OLIVEIRA, Kleber Bittencourt; http://lattes.cnpq.br/3202890124751363
The industrial capacity of companies has been increasingly required with the competitiveness of capital-intensive companies. Many indicators have been used to measure productivity in the manufacturing industries, as the OEE (Overall Equipment effectiveness), in the national literature referred to as "Eficácia Global de Equipamentos", the indicator analyse 3 parameters (availability, performance and quality), giving support to make decisions in all sectors of the production chain. With this, a bibliographic survey was made to identify the limitations of the research and identify the variables and data that would be collected in the three parameters of the indicator. The research also discussed the application of the indicator in a timber industry, explaining all its points of application, as well as collecting and analyzing the data, identifying bottlenecks in the productive process in any sector of the production chain. The research concludes with proposed solutions to the identified problems, including problems from outside the manufacturing sector, proving the overall breadth of the indicator.
Acesso aberto (Open Access)
Análise estrutural de concretos produzidos com resíduos de beneficiamento de placas de mármore e granito
(Universidade Federal do Pará, 2019-05-06) BANDEIRA, Sandy Rebelo; MAGALHÃES, Edilson Marques; http://lattes.cnpq.br/1570353513360972
The present work shows the feasibility of the use of cutting residues of marble and granite slabs in concrete production. The research was carried out in a series of stages, which comprised the collection of waste in the beneficiary companies, through the process of crushing, sieving of waste and production and breaking of specimens. The chemical analysis performed by x-ray fluorescence shows that the material meets the requirements of NBR 12653: 2015 for the concentration of aluminum, silicon and iron oxides, qualifying it as pozzolanic material. The results of axial compression showed that the mixtures produced with the substitution of aggregates meet the minimum requirements of NBR 6118: 2014 for application in structural elements subjected to moderate environmental aggression, class II. The traces were dosed following the instructions of the IPT / USP dosing method. 195 samples were produced, which were ruptured at 3, 7 and 28 days. Concrete was expected to reach at least 30 MPa at 28 days. The traces produced with the substitution of the aggregates presented smaller values than the reference trait. Regarding the absorption, it was observed that the traces with substitution of aggregates presented a slight increase in water consumption, which may explain the reduction in the indices of compressive strength.
Acesso aberto (Open Access)
Gestão estratégica na manutenção de facility da indústria do varejo
(Universidade Federal do Pará, 2019-05-06) COSTA, Pedro Rocha da; CUNHA, Edinaldo José de Sousa; http://lattes.cnpq.br/8714515962963079
The globalization of the Market as a whole causes impacts in all segments of the modern world, competitiveness among suppliers of products and services is the most relevante and generally what permeates it are the exponential advances in the áreas of technology and communication, without due follow-up in the force therefore, this study has as a premise to understand the impacto f this effect on the retail industry and the behavior of costs in the result, with investments in more modern equipment and strategic management of facility maintenance and people management, compare the efficiency and effectiveness of the before and afferwards, compare these results with other major retail centers.
Acesso aberto (Open Access)
Influência da sazonalidade da bacia do médio Solimões na produção de pescado capturado
(Universidade Federal do Pará, 2019-05-06) SANTOS, Claudio de Oliveira; CUNHA, Edinaldo José de Sousa; http://lattes.cnpq.br/8714515962963079
The present study aimed to investigate factors that influenced the seasonality of catching fish in the Middle Solimões region, in the municipality of Tefé, State of Amazonas, specifically regarding the landing system and level of the Solimões River, aiming to identify the factors that influence the quantity of fish in the municipality of Tefé. In this, we sought to verify and describe the main aspects of the fishing landing in this municipality, in relation to the means of transport and typification of the fish, along with their landing, in a Fish Refrigerator and the local Fair. The study was exploratory and descriptive, through a case study in a refrigerator of this city, as well as bibliographic and documentary research, with information gathering from the Mamirauá Sustainable Development Institute Database, and the Fishing Landing Bulletin of this Institute. The data analysis was quantitative and qualitative, with the presentation and description of the records through tables and graphs, which show the variation of fishing landing, river levels, as well as the analysis of the process of catching fish and fish. factors that influence the fishing landing. It is believed that the data from this study may favor the development of strategies and alternatives to optimize the fish logistics in the municipality of Tefé, thus providing an increase in the company's profitability and also a greater gain with fishermen.
Acesso aberto (Open Access)
Proposta de otimização operacional do Porto Público Organizado de Manaus PPOM: um estudo de caso
(Universidade Federal do Pará, 2019-05-06) MARINHO, Raphael dos Santos; BRAGA, Eduardo de Magalhães; http://lattes.cnpq.br/4783553888547500; https://orcid.org/0000-0003-0739-7592
The Manaus Organized Public Port despite its strategic location, daily on its floating docks there is a great number of vessels anchored, an intense flow of people and vehicles of large and small traffic, evidenced the inefficiency of the operational logistics; a wear and tear for PPOM workers and their users who face daily long hours waiting to perform their services of loading and unloading of goods and passengers. The objective of this study was to propose the operational optimization of the Organized Public Port of Manaus (OPPM) in relation to the flow of cargo sent or coming from the interior of the state of Amazonas. Extensive observation of the entire port structure was carried out, as well as an exhaustive review of the literature on the subject. For that, a descriptive research was carried out "in situ" (Organized Public Port of Manaus - OPPM), where an in - depth description of the reality of the current situation was carried out, through photographic reports and records of the problem investigated. After observations was applied action and diagnostic plan tools such as Ishikawa diagram, action plan 5W2H and PDCA cycle. Therefore, with the computerization of data regarding vessels, adoption of fingers at the Torres and Roadway piers and flexibility of opening hours, there is possibility of optimization in the logistic process in PPOM.
Acesso aberto (Open Access)
Produção e implantação de uma base de testes: aplicação em testes de placas de computador e notebooks em uma fábrica na cidade de Manaus
(Universidade Federal do Pará, 2019-05-06) FRAGATA NETO, Plácido Donato; MAGALHÃES, Edilson Marques; http://lattes.cnpq.br/1570353513360972
The current factory scenario presents a problem with the very high cost of importing test bases for each model and line setup of the models. This work aims to improve the productive process in a line of computers with a single test base in the functional test stations of the boards. It will be a unique testing base for all motherboard models of the line, without lost of the quality and reliability of the existing process with imported bases. The planning will be applied within the scope of the engineering by means of employees apt in the development of the creation of the unique base, solving and improving the process of test in the company of activities of industrial follow-up. The cost in the test station was identified in the production line in relation to the cost of importing bases and then a single base was developed and tests were performed with four different plates using the single base. The objective of the single base was achieved, since it eliminated the cost of importing bases and decreased the setup time among the models.
Acesso aberto (Open Access)
Estudo da viabilidade de implantação de técnica de reaproveitamento dos resíduos do frigorífico Frigopeixe em Tefé-AM
(Universidade Federal do Pará, 2019-05-06) CAXEIXA, Luiz Augusto Reis; CUNHA, Edinaldo José de Sousa; http://lattes.cnpq.br/8714515962963079
The large amount of organic solid waste from the fishing industry is a serious socio-environmental problem. The treatment of organic solid wastes, such as the residues of the fish slaughterhouses, has a great reutilization potential, being able to generate by-products that attend both environmental and economic aspects. The aim was to study and propose ways to treat the fish processing residues from Frigopeixe Frigorífico, aiming to provide a sustainable destination for that material in order to achieve the goal of decrease to zero the disposal of those residues in the sanitary landfill of the city of Tefé, without burden the company. In particular, three techniques of reuse of fish waste were studied: composting, silage and fish meal. The study took into account the company production per harvest of 969 tons, on average, and waste generated quantity of 171 tons, on average, the extent of the technique in the reuse of the waste, the cost of implantation, period of storage, maintenance and return on investment, as well as the socio-environmental gain with that implementation. Each of the techniques studied presented great potentials of reuse of the residues, but the production of fish meal proved to be very expensive in its installation and maintenance, becoming, initially, not feasible. The other two techniques have a more adequate profile with the production and investment dimensions of the company, being able to be made a joint deployment, being a technique complementary to the other in the reuse of waste, composting and silage.
Acesso aberto (Open Access)
Seleção de fornecedores de peças usando fuzzy AHP no setor de produção de áudio e televisão
(Universidade Federal do Pará, 2019-05-06) VIEIRA, Geórgenes Wilkens Maciel; BRAGA, Eduardo de Magalhães; http://lattes.cnpq.br/4783553888547500; https://orcid.org/0000-0003-0739-7592
Today's highly competitive environment is forcing manufacturing organizations to establish effective long-term collaboration with efficient organizations. As a result, an effective supplier selection process is very important to the success of any manufacturing organization for cooperation and is essential for companies to get competitive advantage. The purpose of this dissertation is to develop a model that support the decision making on the parts suppliers selection, through the Fuzzy Analysis Hierarchical Process (FAHP), in a supply chain. In order to carry out the suppliers selection process, as data input was used the experts team of Procurement, Quality and Process Engineering areas. From this model, a tool was developed that provided the supplier selection automatic result. The main results were achieved: increasing knowledge, applying the FAHP, defining and presenting the priority and the weights of the criteria for decision making of suppliers selection. It was concluded that the presented model is reliable and simple execution, however, it depends on the expertise and the technical knowledge of the participants on the subject in question. The study presented has its importance for the industry as well as the process presenting relevant results.
Acesso aberto (Open Access)
Análise do processo de logística (manipulação, armazenamento e exposição) para comercialização de hortifrutigranjeiros na feira livre Coronel Teixeira (Feira da Banana) no município de Manaus
(Universidade Federal do Pará, 2019-05-07) OLIMPIO, Ericson dos Santos; SOUZA, José Antônio da Silva; http://lattes.cnpq.br/6157348947425968
Transformations in space and in the world are known to arise from processes of production, development and commercialization in the places where they live. In this context, the fairs are considered sources of production, processing and tourism, so this research project was elaborated with the theme “Analyze the logistics process (handling, storage and exposure) for marketing of fruit and vegetables at the Banana Fair in Manaus”. Thus, the objective was to identify the preponderant legal factors that influence the marketing in the fair itself, seeking if these factors are attending the fair, to describe the process of transportation and storage of products destined to supply the fair and to propose actions of Improvements to better facilitate communication between supplier, marketer and end customer, having for this the creation of interactive application. It is possible to realize that there is a need to improve the formats and adequacy of transport used in the marketing process of products. It was also noticeable that due to inadequate transportation and poor road conditions, 30% of the produce is discarded due to the sensitivity of the products, resulting in a loss in marketers' revenue and a considerable loss in the entire production chair.
Acesso aberto (Open Access)
Aprimoramento do desempenho do controlador preditivo multivariável aplicado em coluna depropanizadora utilizando filtro de kalman
(Universidade Federal do Pará, 2019-05-07) GOMES, Cássio Ferreira; MACEDO, Emanuel Negrão; http://lattes.cnpq.br/8718370108324505
The increase in the efficiency of industrial processes has been necessary in the present day, due to the high market competitiveness. In this context, techniques that seek to increase the performance efficiency of industrial plant control systems, minimizing costs and maximizing product quality, such as the use of Kalman Filter in process variables that feed control systems, has significant relevance. Kalman filter is a parameter estimation technique that allows, for linear systems, the reduction of noise and uncertainties that are subject to process variables. Its wide use is mainly due to the fact that the variables (information) that are obtained through the process, through physical instruments and measurement routines, have finite precision and are naturally corrupted by errors (random or coarse). These variables, when introduced into the control system, without the use of the Kalman Filter, carry all noise signals, reducing the performance of the control system. The aim of this work is to present the results of the Kalman Filter implementation in the industrial process, a propane generator column, controlled through a Predictive Controller, based on real data, in order to improve control performance and energy efficiency of this process. Simulation studies are performed on the MATLAB / SIMULINK platform
Acesso aberto (Open Access)
Detecção de falhas no processo de comunicação e análise dos impactos sobre a segurança de vôo pelo controle de tráfego aéreo
(Universidade Federal do Pará, 2019-05-07) LIMA, Robervandro Silva de; BATISTA, Clauderino da Silva; http://lattes.cnpq.br/1345689043203622; https://orcid.org/0000-0002-8506-4534
It is known that communication, despite the technological advances still presents numerous bottlenecks that can compromise the safety of the air traffic acted by pilot and control; and pilot and other aircraft. However, this process is more complex because it involves aspects of communication related to language, language understanding, ambiguity, uncertain reference, implicit inference, homophony, intonation, repetition (or comparison), and so on. The present dissertation aims to analyze the alternatives for detecting failures in the communication process and the impacts on flight safety by air traffic control. Thus, it should be emphasized that the objective of this work is to analyze the communication process and its failures in air traffic control and to propose devices to detect these faults in a preventive way in order to reduce the impacts on flight safety. Therefore, it is extremely important to propose a communication failure detection, reducing possible risks that can lead to air accidents. Despite this technology applied in the communication system between ground control stations, the communication model used between controllers and pilots, is still a segment that needs a lot of attention and new ways of improving the communicative process, which still has outdated characteristics and which generates negative influence of the several elements described in the communication models to be studied. Its methodology has a bibliographic nature with an experimental proposal.
Acesso aberto (Open Access)
Aplicação da matriz Swot com auxílio da lógica fuzzy para definições de propriedades ao planejamento estratégico de uma empresa
(Universidade Federal do Pará, 2019-05-07) FERREIRA, Manuela Jardim de Paiva; QUARESMA, João Nazareno Nonato; http://lattes.cnpq.br/7826389991864785; https://orcid.org/0000-0001-9365-7498; MACÊDO, Emanuel Negrão; http://lattes.cnpq.br/8718370108324505
In order to seek improvement in procedures and increase the competitive market differential, organizations aim to develop programs and planning that assist the needs of companies. Therefore, this research presents a method capable of assisting in the elaboration of internal and external analysis of a company, which is the SWOT Matrix, to provide a self-diagnosis, key points of the organization such as: Weaknesses, Forces, Opportunities and Threats, that interconnected with Fuzzy Logic allows a holistic view of the points that need attention. The methodology used was the application of questionnaires, direct observation and data collection, developed in the form of a case study in a construction material company. The application of the organizational diagnosis is performed through forms, which are compiled and demonstrated through the Fuzzy graph. Then the internal and external environments are analyzed, and the graph of the critical areas is assembled. In this study, the results pointed out that the critical areas were: Marketing, Physical Environment and Procedures, which need to be adapted to the needs of the company. Thus, a new strategic plan was applied involving methods necessary for the success of the critical areas that consequently brought about improvements to the company as a whole, which has undergone relevant modifications. Thus, it was verified that one must be awabhre of the necessary changes in the newix scenarios and in the new times that the market itself in which the company is inserted demands.
Acesso aberto (Open Access)
Projeto de filtros passivos aplicado em instalações industriais
(Universidade Federal do Pará, 2019-05-14) GIMACK, Worlen Ferreira; LEITE, Jandecy Cabral; http://lattes.cnpq.br/7279183940171317
Due to a need to search for a new form and improvement in electric power quality, we can cite the best performance of capacitive filter installations, in order to remove from the electrical system the harmonics, transients, distortions among others, thus avoiding the burning of equipment, machines, lamps. This system in addition to protect system, provide energy saving due to the RLC system, in parallel acting together, removing all evils from the power grid and diverting to ground.
Acesso aberto (Open Access)
Lógica fuzzy aplicada nas medidas de apoio à tomada de decisões do sistema de gerenciamento de produção de embalagens plásticas
(Universidade Federal do Pará, 2019-06-05) SANTOS, Maycon Bentes dos; NASCIMENTO, Manoel Henrique Reis; http://lattes.cnpq.br/0850846128967798
Currently the automation through decision support systems, plays a fundamental role in the productive chain, from small to large companies, the present study proposes a fuzzy inference model, in the support in the decision measures of the production management system of plastic packaging factory. Analyzing the distinctions of forceful form of each step that end up influencing in the process, and aiming to adapt to the requests of the clients. Using as principle for the proposed system the adequacy of shifts using the maximum output that the factory has. MatLab software was used to treat the data, thus adjusting the variables, which were selected due to their degree of influence in the cycle because they are variables that determine the order of the product's manufacturing, they are: delivery period, quantity required, process production and the number of shifts that will be required to produce a given product, observing with the use of this tool an improvement in the management of shifts, which reduced unnecessary costs and a good understanding in the production cycle in relation to the characteristics of the orders.
Acesso aberto (Open Access)
Aplicação da extrapolação de Richardson na otimização de problemas em fluidodinâmica computacional
(Universidade Federal do Pará, 2020-02-03) SANTOS, Alexandre Marcus Madeira; MAGNO, Rui Nelson Otoni; http://lattes.cnpq.br/9017163598972975
The present work aims to investigate the application of the Richardson Extrapolation (ER) method as an alternative to reduce the simulation time of a specific CFD problem, which is related to a convective and diffusive problem. The geometry under study was built in the Blender software. The initial and boundary conditions were set using the BlenderFDS program, the calculation was done with a CFD code called Fire Dynamics Simulator (FDS), the results were extracted with smokeview software. In addition, Richardson extrapolation code was developed in the Fortran programming language. Flow field properties such as specific mass, pressure, temperature and velocity were calculated for three mesh sizes with and without the RE method. The extrapolated results show promise for maintaining accuracy at a lower computational cost.
Acesso aberto (Open Access)
Práticas de gestão da qualidade e desempenho empresarial nas organizações através do programa de certificação de empresas (PROCEM) do Maranhão
(Universidade Federal do Pará, 2020-02-06) MALUF, Rachid Santos; MAGNO, Rui Nelson Otoni; http://lattes.cnpq.br/9017163598972975
Organizations seek to adapt daily to the competitive market by adopting development strategies and growth stance to become competitive. Among the strategies, the optimization of processes through an effective management system is a differential to attract potential customers and keep the current ones in addition to reducing costs and financial gains. The purpose of this study was to analyze the strategic practices adopted and the business performance acquired in the companies from the search for the Company Certification Program. The survey was carried out in a quantitative way, using a questionnaire of 23 objective questions and 03 subjective questions complementary to a sample of 40 companies out of the total population of 80 companies chosen for having at least three years of participation in the Program. The questionnaire was sent by e-mail and visits. The collected data were analyzed using tables and graphs. It was found through the results obtained, that after certification with PROCEM, companies significantly improved their performance, especially with regard to the improvement of production or service processes, delivery times, relationship with suppliers, customer satisfaction and integration with other Program subjects. It was found that in the context of the interviewed companies, quality management is applied as one of the bases of differentiation, being treated as a source of competitive advantage.