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Voigt, Reuss, Hill, And Self-Consistent Techniques For Modeling Ultrasonic Scattering, Christopher M. Kube, Joseph A. Turner
Voigt, Reuss, Hill, And Self-Consistent Techniques For Modeling Ultrasonic Scattering, Christopher M. Kube, Joseph A. Turner
Department of Mechanical and Materials Engineering: Faculty Publications
An elastic wave propagating in a metal loses a portion of its energy from scattering caused by acoustic impedance differences existing at the boundaries of anisotropic grains. Theoretical scattering models capture this phenomena by assuming the incoming wave is described by an average elastic moduli tensorC0ijkl (x) that is perturbed by a grain with elasticityCijkl (x ') where the scattering event occurs when x = x’. Previous models have assumed that C0ijkl (x) is the Voigt average of the singlecrystal elastic moduli tensor. However, this assumption …