A Novel Approach to Correct Diffraction Effect in Measurement of Ultrasonic Velocity and Attenuation at High Frequencies
ZHANG Dong1, LIU Xiao-Zhou1, GONG Xiu-Fen1, KUSHIBIKI Jun-Ichi2
1State Key Laboratory of Modern Acoustics, Institute of Acoustics, Nanjing University, Nanjing 210093
2Department of Electrical Engineering, Tohoku University, Sendai 980-8579, Japan
A Novel Approach to Correct Diffraction Effect in Measurement of Ultrasonic Velocity and Attenuation at High Frequencies
1State Key Laboratory of Modern Acoustics, Institute of Acoustics, Nanjing University, Nanjing 210093
2Department of Electrical Engineering, Tohoku University, Sendai 980-8579, Japan
Abstract： A novel method to correct diffraction effect in measurement of ultrasonic velocity and attenuation at high frequencies is developed by using the superposition technique of Gaussian beams. To examine the validity of this numerical approach, the amplitude loss and phase advance due to the diffraction effect for an SiO2 specimen are numerically calculated in 30-240 MHz, and the results are in good agreement with those by the Papadakis method.
(Ultrasonic velocity, dispersion, scattering, diffraction, and Attenuation in solids; elastic constants)
引用本文:
ZHANG Dong;LIU Xiao-Zhou;GONG Xiu-Fen;KUSHIBIKI Jun-Ichi. A Novel Approach to Correct Diffraction Effect in Measurement of Ultrasonic Velocity and Attenuation at High Frequencies[J]. 中国物理快报, 2003, 20(7): 1088-190.
ZHANG Dong, LIU Xiao-Zhou, GONG Xiu-Fen, KUSHIBIKI Jun-Ichi. A Novel Approach to Correct Diffraction Effect in Measurement of Ultrasonic Velocity and Attenuation at High Frequencies. Chin. Phys. Lett., 2003, 20(7): 1088-190.
2003, Vol. 20 
