Acoustic characterization of superconductor material Pr123

Abstract

Our study consisted in the characterization of the superconducting
material Pr123 using the acoustic method and the non destructive testing
(NDT). Our work was performed at high working frequency of 600MHz.
We studied the superconducting bulk system with the use of a coupling
fluid to obtain propagation modes. The determination of these modes
according to the Brekhovskikh model and the modeling of the reflection
coefficient R(θ) and the acoustic signature V(z), allows us to determine
the moduli of elasticity of the studied superconducting material: Young’s
modulus (E) and shear modulus (G) in order to determine the critical
angles: longitudinal (θ L ), transverse (θ T ) and Rayleigh critical angle (θ R )
which correspond respectively to the longitudinal acoustic wave, the
transverse acoustic wave and the Rayleigh acoustic wave propagating in
the superconducting material Pr123.