Search
Now showing items 1-10 of 38
The spatial–temporal total friction coefficient of the fault viewed from the perspective of seismo-electromagnetic theory
(Copernicus Gesellschaft MBH, 2020)
Recently, it has been shown theoretically how the lithospheric stress changes could be linked with magnetic anomalies, frequencies, spatial distribution and the magneticmoment magnitude relation using the electrification ...
Effect of V addition on the hardness, adherence and friction coefficient of VC coatings produced by thermo-reactive diffusion deposition
(Universidad Nacional de Colombia (Sede Medellín). Facultad de Minas., 2015-11-01)
Vanadium carbide (VC) coatings were deposited on AISI H13 and AISI D2 steel substrates via thermo-reactive deposition/diffusion (TRD) in order to evaluate their mechanical properties as a function of the vanadium content. ...
Effect of single- and multi-scale surface patterns on the frictional performance of journal bearings - A numerical study
(Elsevier, 2020)
The present study aims at numerically predicting the frictional performance of journal bearings with single- and multi-scale surface patterns considering the real 3D surface topographies after wearing-in in mixed-elastoh ...
Caracterización microestructural y comportamiento tribológico de aleación ti6al4v anodizado.
(2015-05-11)
Se obtuvieron capas de óxido a partir de la aleación Ti6Al4V por proceso de anodizado en acido fosfórico
a diferentes tiempos y densidades de corriente. La capa de óxido fue caracterizada por Microscopia óptica,
Difracción ...
Tribology of zrn, crn and tialn thin films deposited by reactive magnetron sputtering
(Universidad Nacional de Colombia Sede Medellín, 2013)
Friction and wear coefficient represent two important variables for hard coating selection in critical engineering applications such as cutting and material forming. To explain fully these variables, is necessary to ...
Density-depth model of the continental wedge at the maximum slip segment of the Maule Mw8.8 megathrust earthquake
(Elsevier, 2015)
Complexities in the rupture process during a megathrust earthquake can be attributed to the combined effect of inhomogeneous distribution of stress accumulated during the interseismic period and inho-mogeneous rheology of ...
Laboratory testing of the monotonic behavior of partially saturated sandy soil
(UNIVERSIDAD NACIONAL DE COLOMBIA, 2010)
This paper presents a laboratory study on the influence of the saturation evaluated in term of Skempton's pore pressur coefficientBon the behavior of Chlef sand. The study is based on drained and unnonno drained compression ...
Efecto de la modificación superficial por Fricción Agitación (PFA) en la dureza y el desgaste de la aleación de aluminio de la serie 6000
(Servicio Nacional de Aprendizaje. SENA, 2017)
En el presente artículo se reportan los efectos de la modificación superficial mediante la técnica de procesamiento por fricción agitación (PFA) o Fricción Stir Procesing (FSP) sobre una ...
Tribological properties of BixTiyOz films grown via RF sputtering on 316L steel substrates
(Universidad Nacional de Colombia (Sede Medellín). Facultad de Minas., 2015-05-01)
In this paper, we present the results obtained in surface chemical analysis, morphological characterization and evaluation of tribological properties of coatings of amorphous bismuth titanate (BixTiyOz) deposited on ...
Análisis de la fractura de una biela de compresor de refrigeración
(Universidad Nacional de Colombia - Facultad de Ingeniería, 2010)
En este artículo se analiza la fractura de una biela de compresor de refrigeración usado en la industria de productos alimenti- cios. De acuerdo con las características de funcionamiento del mecanismo biela-manivela, la ...