Materiales de Ingeniería

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https://hdl.handle.net/10784/28128
Busca estudiar las propiedades y características de los materiales, teórica y experimentalmente, para el desarrollo y mejoramiento en las aplicaciones de ingeniería.

Líneas de investigación: Biomateriales; Materiales Compuestos; Materiales De Construcción y Reciclaje De Materiales; Materiales Mecánicos.
Código Minciencias: COL0064861.
Categoría 2019: A.
Escuela: Ingeniería.
Departamento académico: Ingeniería de Producción.
Coordinadora: Édgar Alexander Ossa Henao.
Correo electrónico: eossa@eafit.edu.co

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Examinando Materiales de Ingeniería por Materia "adolescent"

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    Time dependent deformation behavior of dentin
    (PERGAMON-ELSEVIER SCIENCE LTD, 2017-04-01) Montoya C; Arola D; Ossa EA; Montoya C; Arola D; Ossa EA; Universidad EAFIT. Departamento de Ingeniería de Producción; Materiales de Ingeniería
    Objective The viscoelastic behavior of dentin and its ability to undergo time dependent deformation are considered to be important to oral functions and its capacity to resist fracture. There are spatial variations in the microstructure of dentin within the crown, which could be important to the viscous behavior. However, a spatially resolved description for the viscoelastic behavior of coronal dentin has not been reported. Methods In this investigation spherical indentations were made in three regions of coronal dentin including the outer, middle and inner regions. Power law relations were developed to quantitatively describe the stress-strain responses of the tissue. Results Results showed that the deformation behavior was strongly dependent on the composition (mineral to collagen ratio) and microstructure (tubule density), which contributed to an increase in the rate of viscous deformation with increasing proximity to the pulp. Conclusions A model accounting for spatial variations in composition and microstructure was developed to describe the steady-state time dependent deformation behavior of coronal dentin, and a good agreement was found with the experimental results. © 2017 Elsevier Ltd