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Issue J. Phys. Colloques
Volume 46, Number C10, Décembre 1985
Eighth International Conference on Internal Friction and Ultrasonic Attenuation in Solids
Page(s) C10-787 - C10-790
DOI http://dx.doi.org/10.1051/jphyscol:198510172

Eighth International Conference on Internal Friction and Ultrasonic Attenuation in Solids

J. Phys. Colloques 46 (1985) C10-787-C10-790
DOI: 10.1051/jphyscol:198510172

ULTRASONIC CHARACTERIZATION OF POROSITY USING THE KRAMERS-KRONIG RELATIONS

J.H. ROSE1, D.K. HSU1 and L. ADLER2

1  Ames Laboratory, USDOE, Iowa State University, Ames, Iowa 50011, U.S.A.
2  Welding Engineering Department, Ohio State University, Columbus, Ohio 43210, U.S.A.


Abstract
A new algorithm is proposed to determine the volume fraction of pores in solids using the frequency dependent ultrasonic attenuation. The algorithm was developed by examining the Kramers-Kronig relation between the porosity induced ultrasonic attenuation and the change in sound velocity. The method is tested using data measured for several porous aluminum samples.