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Aluminum

Ames Laboratory Publications

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Angular Dependence Of Ultrasonic Wave Propagation In A Stressed, Orthorhombic Continuum: Theory And Application To The Measurement Of Stress And Texture, R. Bruce Thompson, S. S. Lee, J. F. Smith Sep 1986

Angular Dependence Of Ultrasonic Wave Propagation In A Stressed, Orthorhombic Continuum: Theory And Application To The Measurement Of Stress And Texture, R. Bruce Thompson, S. S. Lee, J. F. Smith

Ames Laboratory Publications

A theory for ultrasonic wave propagation in a symmetry plane of a biaxially stressed, orthorhombic continuum is presented. Since many of the material parameters which appear in the analysis are unknown, in particular the third‐order elastic constants of polycrystalline metals, emphasis is placed on the angular dependence of the velocities. An expansion to first order in stress‐induced anisotropy and to second order in textural anisotropy reveals terms with twofold, fourfold, and sixfold symmetry. Scenarios are proposed for using various properties of this symmetry to deduce the difference in magnitude and directions of the principal stresses independent of textural ...