公开(公告)号：US5237874A

公开(公告)日：1993-08-24

申请号：US772316

申请日：1991-10-07

申请人： Paul J. Latimer ,  Gary W. Owens ,  Nelson Perez ,  Christos N. Sarantos

发明人： Paul J. Latimer ,  Gary W. Owens ,  Nelson Perez ,  Christos N. Sarantos

IPC分类号： G01N29/24 ,  G01N29/26

CPC分类号： G01N29/26 ,  G01N29/2412 ,  G01N2291/0422 ,  G01N2291/0423 ,  G01N2291/044 ,  G01N2291/101 ,  G01N2291/2632 ,  G01N2291/2634

摘要： This invention pertains to a method and apparatus of non-destructive testing wherein a generally bidirectional wave generating electromagnetic acoustic transducer is pivotally mounted upon a base with this transducer being continuously rotated or oscillated upon the base as it is moved with respect to the workpiece (or the workpiece is moved with respect to the base). This oscillation or rotation causes a wave to be generated along an arc with these waves extending radially outward from the base so that any flaws in the workpiece can be struck at an angle as close to 90 degrees as possible (the optimal incident angle).

摘要翻译： 本发明涉及一种非破坏性测试的方法和装置，其中大致双向的产生波动的电磁换能器枢转地安装在基座上，当该换能器相对于工件移动时，该换能器在基座上连续地旋转或振荡（或 工件相对于基座移动）。 这种振荡或旋转使得沿着电弧产生波，这些波从基座径向向外延伸，使得工件中的任何缺陷可以以尽可能接近90度的角度（最佳入射角）被击打。