超音波探傷の傾斜底面ステップおよび直線溝による反射の数値実験

概要

論文の詳細を見る
Takahashi performed experiments on the reflection of the transverse waves by an inclined step on a free surface, and he also calculated the same cases using the sound wave theory proposed by Werneyer, and found large gap between the experimental results and calculated values. He also performed experiments on the reflection of the transverse waves by an inclined slit on a free surface having 1 mm height. In order to verify the elastic wave theory, numerical experiments of the same cases of reflections for the transverse waves have been executed. The incident angle of the transverse wave is given by 45 degree, and the inclination angles of steps or cracks are taken from 0 degree to 50degree for every 10 degree. The results are found to agree with the experimental results within 2 or 3 dB error. The visualization of reflected waves has been realized using vectors diagrams. As the consequence, Physical mechanisms of new phenomena of reflections, such as head waves or corner waves, have been clarified in details.
社団法人溶接学会の論文
1995-02-05