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本方法突出了超声波的直线传播规律,用声线来描述超声波的传播情况,将折射定律的三角表达式换成了几何表达式,从而在管材聚焦超声波探伤中,避开了对声线的繁琐的三角计算而直接使用几何作图法。此方法可用于管板、棒、球工件的声场几何分析中。尽管这种方法只是粗略地近似,但对于确定声线和焦点在工件中的相互位置以及作声束在管壁等工件中的传播示意图已经足够精确了。
The method highlights the linear propagation of ultrasound, describes the propagation of ultrasound with sound rays, and transforms the triangular expression of the law of refraction into a geometric expression, thereby avoiding the cumbersomeness of the sound ray in the tube focusing ultrasonic flaw detection The triangulation and direct use of geometric mapping method. This method can be used for tube plate, rod, ball workpiece sound field geometric analysis. Although this method is only a rough approximation, it is sufficiently accurate to determine the mutual position of sound and focus in the workpiece and the propagation pattern of the sound beam in a workpiece such as a pipe wall.