J. Phys. Colloques 46 (1985) C10-787-C10-790
ULTRASONIC CHARACTERIZATION OF POROSITY USING THE KRAMERS-KRONIG RELATIONSJ.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.
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.