Friction Coeficient
Mostrando 1-4 de 4 artigos, teses e dissertações.
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1. Influência do coeficiente de atrito entre os agregados e da viscosidade da matriz no comportamento reológico suspensões concentradas heterogêneas. / Influence of aggregates friction coefficient and matrix viscosity in the rheological behavior of heterogeneous concentrated suspensions.
The rheological behavior of concentrated suspensions like concrete and mortars plays an important hole during their processing and application, and also has a great influence on the final product quality. The flowability of these suspensions is directly related to the ease of particle motion in the system, therefore reduction of friction phenomena contribute
Publicado em: 2008
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2. Influência de parâmetros microestruturais no comportamento tribológico de ligas ferrosas multicomponentes / Influence of microstructural parameters on the tribological behavior of multicomponent ferrous alloys
The aim of this work is to evaluate the effect of microstructural parameters (eutectic carbides and matrix hardness) of multi-component ferrous alloys on tribological behavior in sliding wear and micro-abrasive wear. The samples were two series of alloys with variable vanadium (V serie) and molybdenum (M serie) contents and fixed amounts of other elements. E
Publicado em: 2007
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3. Determination of the oxygen and nitrogen interstitial diffusion coeficient in niobium by mechanical spectroscopy
Mechanical spectroscopy measurements have been extensively used in the last decades to obtain information about many aspects of the behavior of solutes in metallic materials. Metals of body-centered cubic lattice that contain heavy interstitial elements (oxygen, nitrogen and carbon) in solid solution, present anelastic relaxation peaks when submitted to cycl
Materials Research. Publicado em: 2006-12
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4. Problemas causados pelo aquecimento em rodas ferroviarias : o ensaio Kraus
This work is a summary of the most important problems caused by heating in railway wheels. It shows how heat is generated during braking, how many heat goes into the wheel, the temperature distribuition, thermal stresses and its influence in the material fatigue. It puts foward the problem related to structural changes caused by heating and mentions its most
Publicado em: 1992