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斜探头探伤时,同样可以应用底波反射来确定焊缝中缺陷的横向位置。在图1中可以看到,任意点 m 的反射波波距 t 与底面反射点 M 的反射波波距 T 存在如下的关系。
In the case of oblique probe flaw detection, it is also possible to apply bottom wave reflection to determine the transverse position of the defect in the weld. It can be seen in FIG. 1 that the wave pitch t of the reflected wave at an arbitrary point m and the wave pitch T of the reflected wave of the reflection point M on the bottom surface have the following relations.