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Showing 1 to 6 of 6 for “"GND"”.
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Multiscale Experimental Analysis in Plasticity: Linking Dislocation Structures to Continuum Fields
… the geometrically necessary dislocation density (GND) that describes the signed part of the overall dislocations is measured on a nickel single crystal sample using recently developed high resolution electron backscatter diffraction (HR-EBSD) over different field of view, 90 μm² − 1mm² with …
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Modeling dislocation density evolution in continuum crystal plasticity
… tion of geometrically necessary dislocation (GND) density in continuum formulations through plastic strain gradients, a single crystal plasticity model based on dislocation density state variables is developed. The density state variables evolve from initial conditions according to equations …
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High-Resolution Characterization of Micro-Scale Crack Tip Fields in Zirconium
… localized geometrically necessary dislocation (GND) densities are estimated using HR-EBSD as an indirect measure of plastic deformation ahead of a microscale crack tip. The advantages of HR-EBSD in measuring fine-scale dislocation structures are also described. Chapter V analyzes the elastic …
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Optimización de la producción aerobia de ácido succínico y ácido málico a partir de glicerol utilizando cepas de e. Coli modificadas genéticamente
… de la enzima 6 fosfogluconato deshidrogenasa (gnd) que participa en la rama oxidativa de la vía de las pentosas fosfato, ya que trabajos anteriores han demostrado que por sí sola esta mutación aumenta las cantidades de ácido succínico, pero en condiciones de anaerobiosis. Es así como se …
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Mode I Fracture Testing on Zirconium Foils Under Plane-stress Condition
Zirconium alloys are commonly used in nuclear reactor in-core components due to their good mechanical properties and low neutron-absorption cross-section. Especially for CANada Deuterium Uranium (CANDU) reactors, zirconium alloys serve as the main structural material for fuel channels. In order to …