Thermal Contact Resistance
Mostrando 1-12 de 16 artigos, teses e dissertações.
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1. Characterization of Li2O-Al2O3-SiO2 glass-ceramics produced from a Brazilian spodumene concentrate
Resumo Vitrocerâmicas do sistema LAS (Li2O-Al2O3-SiO2) com elevada resistência ao choque térmico foram obtidas com sucesso com o uso de um concentrado de espodumênio brasileiro como principal matéria-prima (80%-70% em massa). Duas composições (Li2O.Al2O3.nSiO2) foram produzidas com n= 2 e 4, próximas às composições estequiométricas das fases eucr
Cerâmica. Publicado em: 15/08/2019
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2. Leakage Resistance Envelopes of API 8 Round Casing Connections using FE Analysis
Abstract Leakage resistance of casing connections can be evaluated by extremely expensive testing procedures. Although testing is required for connection validation, significant amount of resources can be saved by complementing testing with Finite Element (FE) analysis. In this regard, a broadly accepted criterion to characterize leaks in FE simulation is st
Lat. Am. j. solids struct.. Publicado em: 21/03/2019
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3. Thermal effusivity estimation of polymers in time domain
An accurate knowledge of thermophysical properties is very important, for example, to optimize the engineering design and the development of new materials for many applications. Thermal effusivity is a thermal property which presents an increasing importance in heat conduction problems. This property indicates the amount of thermal energy that a material is
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2011-12
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4. Obtenção e caracterização de revestimentos híbridos à base de precursores alcoóxidos sobre o aço galvanizado
Galvanized steel presents a protective layer of Zn and Zn-Fe, obtained by hot dipping, which promotes the steel protection. However, the presence of this layer decreases the adhesion of paint systems and reduces the corrosion resistance. A very efficient method used to protect against the substrate corrosion is chromate layers, which provide excellent antico
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2011
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5. Wettability, Shrinkage and Color Changes of Araucaria angustifolia After Heating Treatment
The effects of thermal treatment on the wettability and shrink resistance of Araucaria angustifolia (Parana pine) were studied from 20 to 200 °C. The contact angles of water droplets on untreated and heat-treated samples were measured by the sessile drop method in the grain of heartwood and sapwood cut in the radial, longitudinal, and tangential directions.
Materials Research. Publicado em: 2010-09
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6. Experimental study of the heat transfer between the passenger and the seat of vehicles by means of instrumented maniquim. / Estudo experimental da troca de calor entre o passageiro e o banco de veículos utilizando manequim instrumentado.
Vehicles seats acclimatization systems have been lately developed and delivered as microclimate solutions in response to the personal comfort increasing demand. The influence of such systems use on the improvement of passengers satisfaction with the ambient thermal comfort is well recognized, either heating or cooling the seat. In the present work the heat t
Publicado em: 2010
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7. Estudo teórico experimental da dinâmica de temperatura no interior de uma cavidade cilíndrica. / EXPERIMENTAL THEORETICAL STUDY OF DYNAMIC TEMPERATURE AT A CYLINDRICAL
Two methods for solving a direct heat diffusion problem inside a cylindrical enclosure are proposed, each one is applied with a linear and plus a non-linear solution. Besides, a experimental apparatus was developed for theoretical models validation purpose. Furthermore, as an application of the proposed system the inverse analysis (inverse problem) is used t
Publicado em: 2010
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8. Sintering behavior of LZSA glass-ceramics
The LZSA glass-ceramic system (Li2O-ZrO2-SiO2-Al2O 3) shows interesting properties, such as good chemical resistance, low thermal expansion, high abrasion resistance, and a low dielectric constant. However, in order to obtain a high performance material for specific applications, the sintering behavior must be better understood so that the porosity may be re
Materials Research. Publicado em: 2009-06
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9. Desenvolvimento da técnica analítica para determinar a resistência térmica de contato no processo de forjamento
A Resistência Térmica de Contato entre a ferramenta de forjamento e a peça é um parâmetro importante para a otimização, por simulação computacional, do comportamento do material forjado. Os procedimentos atuais destinados à determinação da Resistência Térmica de Contato apresentam discrepância significativa nos resultados. A falta de valores c
Publicado em: 2009
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10. Análise de portadores assintomáticos de Staphylococcus aureus no Hospital Universitário de Brasília
Staphylococcus aureus is a pathogen associated with high rates of mortality and morbidity, capable of producing infections in various tissues of the human body. His ability to acquire resistance to antibiotics makes it a dangerous infectious agent in the hospital environment. The purpose of this work was to survey the incidence of asymptomatic carriers of S.
Publicado em: 2008
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11. PROCESSAMENTO E CARACTERIZAÇÃO DE COMPÓSITOS SUPERCONDUTORES YBa2Cu3O7-d/ Ag
In this work is presented an experimental study on the effects of the addition of Ag to the system YBa2Cu3O7-d. The silver can be added to the YBa2Cu3O7-d system through the mixture with metallic Ag, with oxide of silver (Ag2O) or with nitrate of silver (AgNO3), using different techniques and forms of processing. The addition of silver to the YBa2Cu3O7-d sys
Publicado em: 2008
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12. Sobre o dimensionamento do revestimento contra fogo de estruturas de aço. / Determination of the fire protective material in steel structures.
This present work shows some methodologies to determine the thickness of the fire protective material in steel structures in a fire situation. It shows analytical methods based on actual standards and results of experimental analysis by international and national laboratories. The application of the program Super Temp Calc (STC) is detailed, by thermal analy
Publicado em: 2007