The traditional one-dimensional ultrasonic beam steering has time delay and is thus a complicated problem. A numerical model of ultrasonic beam steering using Neumann boundary condition in multiplysics is presented in the present paper. This model is based on the discrete wave number method that has been proved theoretically to satisfy the continuous conditions. The propagating angle of novel model is a function of the distance instead of the time domain. The propagating wave fronts at desired angles are si...
【英文摘要】
The traditional one-dimensional ultrasonic beam steering has time delay and is thus a complicated problem. A numerical model of ultrasonic beam steering using Neumann boundary condition in multiplysics is presented in the present paper. This model is based on the discrete wave number method that has been proved theoretically to satisfy the continuous conditions. The propagating angle of novel model is a function of the distance instead of the time domain. The propagating wave fronts at desired angles are si...
【基金】
supported by the National Natural Science Foundation of China (10972014)
【更新日期】
2012-03-09
【分类号】
TB559
【正文快照】
1 Introduction Multilayered media such as bonded structures are increas- ingly used in industries due to their good mechanical proper- ties. It is crucial to detect the defects that may appear either in the production process or in the entire service life
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