Method for estimating the properties of a solid material...

Measuring and testing – Vibration – Resonance – frequency – or amplitude study

Reexamination Certificate

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C702S113000

Reexamination Certificate

active

06848311

ABSTRACT:
A method to measure the complex frequency-dependent dilatational and shear wavenumbers of a material under a static compressional force. The material is first vibrated in a vertical and horizontal directions while obtaining transfer functions in each direction. The two transfer functions are combined with a theoretical model to estimate a dilatational wavenumber and a shear wavenumber. The wavenumbers can be utilized to give the complex dilatational wavespeed, complex shear wavespeed, complex Lamé constants, complex Young's modulus, complex shear modulus, and complex Poisson's ratio.

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patent: 6023980 (2000-02-01), Owen et al.
patent: 20020129660 (2002-09-01), Hull

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