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Análise tribológica das malhas multifuncionais obtidas por multicamadas
(Universidade Federal do Rio Grande do NorteBRUFRNPrograma de Pós-Graduação em Engenharia MecânicaTecnologia de Materiais; Projetos Mecânicos; Termociências, 2012-01-30)
The present work consists in the analysis of tribologycal properties of basic and
multifunctional knitted fabrics. This knowledge has fundamental importance for the textile
industry since it can quantify, in an objective ...
Comportamento tribológico de ferros fundidos vermiculares de alta resistência ensaiados em diferentes níveis de severidade
(Universidade Tecnológica Federal do ParanáCuritibaBrasilPrograma de Pós-Graduação em Engenharia Mecânica e de MateriaisUTFPR, 2021-03-01)
The tribological performance of the system formed by the cylinder and the components of an internal combustion engine is directly related to the fuel consumption and pollutant emissions. Many countries have been concerned ...
Produção de filmes DLC-Ag através de técnicas assistidas por plasma
(BrasilUFRNPROGRAMA DE PÓS-GRADUAÇÃO EM CIÊNCIA E ENGENHARIA DE MATERIAIS, 2015-07-09)
Diamond-like carbon (DLC) films have awaked growing interest due to its outstanding mechanical and tribological properties such as high hardness, high wear resistance, chemical inertness, and low friction coefficient. This ...
Desenvolvimento de ferramentas de corte auto-lubrificantes utilizando deposição de filmes finos de MoS2/TiN em multicamadas por magnetron sputtering
(BrasilUFRNPROGRAMA DE PÓS-GRADUAÇÃO EM ENGENHARIA MECÂNICA, 2020-01-24)
Lubrication in the manufacturing process represents up to 17 % of the total cost of
production, therefore a factor of great interest for the industry. In addition to the high cost,
in the field of manufacturing and ...
Obtenção e caracterização de nanolubrificantes utilizados em refrigeração aditivados com nanoparticulas de Índio (In)
(BrasilUFRNPROGRAMA DE PÓS-GRADUAÇÃO EM ENGENHARIA MECÂNICA, 2017-05-03)
The increasing demand for products with higher performance, lower manufacturing cost, less impactful to the environment and are more energy efficient, have fostered research in various areas of nanoscience and nanotechnology ...
Síntese e caracterização de nanopartículas superparamagnéticas para aditivação de lubrificantes industriais
(BrasilUFRNPROGRAMA DE PÓS-GRADUAÇÃO EM ENGENHARIA MECÂNICA, 2017-03-14)
The obtaining of nanomaterials with specific properties for additivation of oil for industrial lubricant is still a challenge, but there are some expectations that may minimize tribological problems, which are primarily ...
O efeito dos tratamentos de nitretação por plasma e têmpera superficial a laser nas propriedades superficiais de ferros fundidos vermiculares
(Universidade Tecnológica Federal do ParanáCuritibaBrasilPrograma de Pós-Graduação em Engenharia Mecânica e de MateriaisUTFPR, 2018-02-26)
In search of greater efficiency, the development of new engines has increased to the mechanical and thermal demands of the components. The specific properties of Compacted Graphite Iron (CGI), such as wear resistance, ...
Comparative assessment of a mountain river flow resistance – 1D-: sensitivity and prediction using data-based approaches
(Universidad de Cuenca, 2022-11-21)
Mountain -rivers are, by far, the most challenging case to model because of its bed characteristics and their energy
dissipation mechanisms depending on its irregular morphology. Resistance, roughness, or friction parameter ...
Avaliação de propriedades e emissões atmosféricas de diesel microemulsionado com glicerina
(BrasilUFRNPROGRAMA DE PÓS-GRADUAÇÃO EM ENGENHARIA QUÍMICA, 2019-12-06)
Currently petroleum-based fossil fuels are widely used for power
generation/work and this has increased emissions of polluting gases into the
atmosphere, causing several problems. To reduce SOx emissions to the atmosphere ...
Avaliação de ésteres etílicos como aditivo à gasolina
(BrasilUFRNPROGRAMA DE PÓS-GRADUAÇÃO EM ENGENHARIA QUÍMICA, 2019-08-26)
The objective of this study was to evaluate the application of ethyl octanoate and ethyl oleate
in different concentrations as gasoline additives based on characterization analyzes,
consumption in Otto cycle engine and ...