149 resultados para Projeto de Comportamento Térmico


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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Pós-graduação em Zootecnia - FCAV

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Pós-graduação em Agronomia (Energia na Agricultura) - FCA

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Pós-graduação em Alimentos e Nutrição - FCFAR

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Pós-graduação em Ciências Biológicas (Farmacologia) - IBB

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Pós-graduação em Engenharia Mecânica - FEIS

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Materiais estruturais utilizados no projeto de equipamentos e instalações industriais podem apresentar mudança de seu comportamento à fratura quando se varia a temperatura. Este tipo de comportamento caracteriza-se pela existência de uma curva de transição, onde 3 regiões ficam bem definidas: os patamares inferior e superior e a região de transição. Na região de transição, os resultados experimentais apresentam alto espalhamento e são bastante dependentes da geometria ensaiada. Para solucionar este problema, foi desenvolvido um modelo analítico experimental, que resultou na edição da norma ASTM E1921-97. O trabalho inclui um estudo da influência de diversas rotas de tratamentos térmicos aplicadas em um aço 4130 utilizado pela indústria aeronáutica, um aço de qualidade API utilizado pela indústria petrolífera e um aço da classe A516 atualmente utilizado pela indústria nacional de vasos de pressão, na microestrutura, propriedades mecânicas de tração e tenacidade à fratura. Os resultados mostraram que o aço 4130 A450, apresentou a melhor correlação entre resistência e tenacidade entre as microestruturas pesquisadas. Este comportamento deve estar associado a rota de tratamento térmico aplicada a esta condição. O tratamento de austêmpera possibilita a formação de bainita que, tradicionalmente é conhecida por apresentar elevados valores de tenacidade. O método proposto pela ASTM pode ser considerado viável para as diversas microestruturas pesquisadas ampliando a aplicação da metodologia que recomenda o ensaio apenas para aços ferríticos. No entanto, a metodologia da Curva Mestra em materiais tratados termicamente deve ser conduzida de forma a se estabelecer parâmetros que considerem as modificações microestruturais sofridas pelo material.

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Quartz crystals under natural or artificial irradiation can acquire dark shades and variations btween smoky, black and brown but when submitted at heat-treatment they can become greenish, yellowish or brownish, called citrine at gem shops. In this work a lot of samples was collected from different places in Brazil (Corinto - MG, Diamantina - MG, Sento Sé - BA and Santana do Araguaia – PA) and at first they were submitted at artificial irradiation resulting in dark colours. After that they were submitted at heat-treatment in differents temperatures and time of exposure to record when color change happened to light colours. It variated according to each origin, temperature, time of expousure and different aluminiun and other chemical elements content. Its was possible to define the ideal conditions to results better colours and related it with geology and chemical quartz composition.

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This work aims to show the importance of Baja SAE Project in engineering education, as well as the development of the student, being an outstanding tool for the engineering student has an education that meets the objectives of the pedagogical university and also the guidelines Ministry of Education curriculum for engineering courses. The Baja SAE Project provides the engineering students the chance to apply in practice the knowledge acquired in the classroom, to enhance their preparation for the labor market. The student becomes involved with a real case of project development, from concept design, detailed design and construction. The Baja SAE Project redefines the position of the student as an active element in the learning process engineering, leaving behind the simple condition of receiving information. Values procedures that provide students the opportunity to learn in contexts of professional practice, while offering the opportunity to contextualize the execution of a project. From an analysis to develop personal skills, Baja SAE Project has its own characteristics and essential for professional practice, however, not specific to the engineering course. For example, capacity for teamwork, communication skills written and oral, ethical behavior, critical, overview, entrepreneurial spirit, leadership, etc

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The inclusion of sustainability practices in the construction is a growing trend. This propensity to sustainability takes place from the 1980’s due to the concern about the scarcity of natural resources and damages caused by the men to the environment. Another upward sector in the architecture business is the environmental psychology. The understanding of the environment and it’s planning and adaptation to meet the real user’s needs are essential factors to build an widely used and comfortable environment. An environment can only be considered complete when it meets the real user’s needs. Sustainability related themes as well as environmental psychology are highlighted in the discussions about the projects as fundamental factors to the environment’s quality. This work seeks the development of an kindergarten school, conceptually grounded in researches and analysis of school environments, playful projects and sustainability in the built environment, aiming its use in the city of Bauru. The project will be built from the understanding of the human behavior and in search of an sustainable architecture

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The objective of this work was to develop a numerical method to solve boundary value problems concerning to the use of dispersion model for describing the hydraulic behavior of chemical or biological reactors employed in the wastewater treatment. The numerical method was implemented in FORTRAN language generating a computational program which was applied to solve cases involving reaction kinetics of both integer and fractional orders. The developed method was able to solve the proposed problems evidencing to be a useful tool that provides more accurate design of wastewater treatment reactors