Patent ID: 7584060
Filing Date: 2009-09-01
Classification: G01N

Abstract:
1. A method for calculating material properties of a material of interest comprising the steps of: determining a dilatational wavespeed by: conducting an insertion loss test of a first piece of the material having a first thickness at zero wavenumber to obtain first transfer function data; conducting an insertion loss test of a second piece of the material having a second thickness at zero wavenumber to obtain second transfer function data, wherein said second thickness is twice said first thickness; and calculating the dilatational wavespeed from said first transfer function and said second transfer function; determining a shear wavespeed by: conducting an insertion loss test of a first piece of the material having a first thickness at a non-zero wavenumber to obtain first shear transfer function data; conducting an insertion loss test of a second piece of the material having a second thickness at a non-zero wavenumber to obtain second shear transfer function data, wherein said second thickness is twice said first thickness; conducting an insertion loss test of a third piece of the material having a third thickness at zero wavenumber to obtain third shear transfer function data, wherein said third thickness is three times said first thickness; calculating the shear wavespeed from said first shear transfer function, said second shear transfer function, said third shear transfer function and said dilatational wavespeed; and providing said calculated shear wavespeed and said calculated dilatational wavespeed from said steps of calculating as the material properties.