Realization of wave field snapshots in 2D ultrasonic physical simulation
WANG Xu;LIU Zheng-ping;Southwest Jiaotong University;
In this paper,based on the two-dimensional model of ultrasonic seismic physical experiment,the two dimensional seismic wave-field snapshot acquisition method is put forward, and the homogeneous half space and lateral inhomogeneous half space model of two-dimensional wave field snapshots is obtained. Compared with the corresponding two-dimensional numerical simulation results,experimental observation and wave-field snapshot that plot by after processing date and Rayleigh surface wave dispersion characteristics of near the free-surface,they both has a very good consistency,which verified the feasibility of ultrasonic technology to simulate wave field snapshot method and its credibility. The research results have advantages of revealing the response characteristics of space and time to show that the proposed physical simulation method is intuitively reveal the two-dimensional of full wave seismic phase in complex mediu. In addition, the comparison in dynamic photoelasticity method based on transparency of experimental materials restrictions,this method can be applied to the ultrasonic model experiment of all material, so the ultrasonic physical experiment has the very good application value.