Browsing by Autor "Lina M. Quijano Luque"

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    A Pressure-Volume System for Measuring Mechanical Properties of Small Diameter Vessels
    (2012) Javier Navarro Rueda; Diana M. Sánchez Palencia; Lina M. Quijano Luque; Juan Carlos Briceño Triana
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    Un sistema presión-volumen para la medición de propiedades mecánicas de vasos cardíacos menores
    (Universidad de Los Andes, 2012) Javier Navarro Rueda; Diana M. Sánchez Palencia; Lina M. Quijano Luque; Juan Carlos Briceño Triana
    Mechanical properties of Small-Diameter Vessels (SDV) are scarcely studied. The proposed Pressure-Volume (PV) system, developed to evaluate stress-strain (σ-ε) behavior of SDV, allows the controlled variation of internal pressure and simulation of pressure-induced diameter changes of tubes. Measurements were taken from contrast-improved images captured for each internal pressure value. A circular cross-section tube in equilibrium, with elastic wall and known pressures was assumed to determine circumferential stress and strain. σ-ε curves were obtained and validated against tensile uniaxial (TU) testing. Although different behaviors were expected, experimental data is consistent when compared to TU results, differentiating by 5.68 to 12.60 %.