Author:
Li Hongwei,Zhang Rongfan,Zheng Ying,Fu Kang
Abstract
Abstract
In order to solve the problems of difficult measurement, inaccurate results and serious interference of diffusion and attenuation in the nondestructive evaluation of grain size of magnesium alloy components with complex profile, the sound field models of plane, cylindrical and conical parts based on the multiple Gaussian sound beam method are studied, and the attenuation mechanism of ultrasonic propagation in the medium of complex components and the diffusion and attenuation components in curved test blocks are analyzed, An evaluation method of ultrasonic attenuation of grain size based on diffusion loss correction is proposed to eliminate the influence of complex components on the total amount of ultrasonic attenuation. The results show that the ultrasonic nondestructive evaluation method of grain size based on sound velocity diffusion correction can effectively reduce the system error and improve the accuracy of grain size evaluation of magnesium alloy components with complex profile.
Subject
Computer Science Applications,History,Education
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