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Mostrando ítems 21-30 de 1063
Aplicação da tribologia ao estudo e desenvolvimento de materiais para embreagem automotivaApplication of tribology the study and development of materials to automotive clutch
(Universidade Federal de UberlândiaBRPrograma de Pós-graduação em Engenharia MecânicaEngenhariasUFU, 2016)
Sliding wear of CaZrO3-MgO composites against ZrO2 and steel
(Elsevier, 2017-01)
The wear behaviour of a fine grained and dense CaZrO3-MgO composite is presented. Un-lubricated Pin-on-disc tests at room temperature have been performed using 10 N as normal force and 0.10–0.15 ms-1 as sliding rate and ...
Contact notch stress assessment within frictional contact joints
(Universidad Nacional de Colombia Sede Medellín, 2012)
Stress concentrations at the ends of a flat contact including frictional sliding are analyzed in this article by using the finite element (FE) method. The numerical studies are conducted with a shaft coupled to the hub by ...
Friction and wear behavior of irradiated polyethylene sliding against a rough steel surface
(Springer, 2014-07)
The aim of this study was to evaluate the tribological behavior of polyethylene crosslinked by gamma radiation sliding against a steel surface. Two high-density polyethylenes were irradiated to a total dose in the range ...
Lifetime comparison of Y-TZP/porcelain crowns under different loading conditions
(Elsevier B.V., 2015-04-01)
Objectives: To compare the lifetime of Y-TZP/porcelain crowns under three different load conditions using step-stress accelerated lifetime testing.Methods: The Y-TZP frameworks were milled using CAD/CAM, veneered with a ...
Influência da pressão de contato e velocidade de deslizamento no estudo tribológico de um compósito à base de PTFE
(Universidade Federal do Rio Grande do NorteBrasilUFRNEngenharia Mecânica, 2018-06-08)
The aim of this study is to identify how different conditions of contact pressure and sliding speed influence the tribological behavior of a PTFE composite. In order to compare their behavior, two different materials were ...
Potentials of constrained sliding mode control as an intervention guide to manage COVID19 spread
(Elsevier, 2021-03)
This work evaluates the potential of using sliding mode reference conditioning (SMRC) techniques as a guide for non-pharmaceutical intervention (NPI) to control the COVID-19 pandemic. In particular, for the epidemiological ...
Comportamento tribológico de poliuretanos elastoméricos no desgaste por deslizamento contra capa de poliamida 11 de dutos flexíveisTribological behavior of elastomeric polyurethane sliding against polyamide 11 external layer of flexible risers pipes
(Universidade Federal de UberlândiaBRPrograma de Pós-graduação em Engenharia MecânicaEngenhariasUFU, 2016)
A finite strain contact model for mixed lubricated surfaces in forming processes
(Elsevier, 2013-06)
For an accurate simulation of forming processes, it is of paramount importance to model the different lubrication regimes that can develop at the contact interface. These might vary from zone to zone of the forming piece, ...