Examinando por Autor "Ossa Henao, Edgar Alexander"

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  • No hay miniatura disponible
    Ítem
    ¿Cómo inventamos a partir de la naturaleza?
    (2016-04-15) Estrada Hernández, Susana María; Ossa Henao, Edgar Alexander; Muriel Gil, Luisa Fernanda; Arango Uribe, María Adelaida; Londoño Rivera, Ana María; Estrada Hernández, Susana María; Ossa Henao, Edgar Alexander; Muriel Gil, Luisa Fernanda; Arango Uribe, María Adelaida; Londoño Rivera, Ana María
  • No hay miniatura disponible
    Ítem
    Improving the mechanical properties of commercial feldspathic dental porcelain by addition of Alumina-Zirconia
    (IMPRENTA UNIV ANTIOQUIA, 2020-01-01) Gomez Tamayo, Juliana; Rueda Arango, Astrid Oasis; Ossa Henao, Edgar Alexander; Gomez Tamayo, Juliana; Rueda Arango, Astrid Oasis; Ossa Henao, Edgar Alexander; Universidad EAFIT. Departamento de Ingeniería de Producción; Materiales de Ingeniería
    Dental ceramics made from Yttria stabilized tetragonal Zirconia polycrystalline (Y-TZP) with feldspathic porcelain veneers have similar mechanical and aesthetic response to natural tooth. However, cases of early failure, such as chipping or fracture in the veneering have been reported after short periods of use. The present study evaluated the feldspathic porcelain (VITA-VM9) with addition of 0.5 and 2.5 wt% Alumina-Zirconia as reinforcing agents. Hardness, fracture toughness, contact resistance and color variations were evaluated finding better mechanical performance on the new formulations.
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    Ítem
    Micromechanical modeling of particle reinforced polymers
    (IMPRENTA UNIV ANTIOQUIA, 2010-08-01) Ossa Henao, Edgar Alexander; Ossa Henao, Edgar Alexander; Universidad EAFIT. Departamento de Ingeniería de Producción; Materiales de Ingeniería
    This work describes an easy to use constitutive model able to predict the mechanical behavior of polymer matrix particulate composites at temperatures above the glass transition temperature Tg. This model was basedon both phenomenological and micromechanical theories. With the model proposed it is possible to obtain the properties of the material (macro) using the characteristics of its components (micro). This model exhibits a reasonable agreement with experiments under various volume fractions of particles.