公开(公告)号：US3895685A

公开(公告)日：1975-07-22

申请号：US13499971

申请日：1971-04-19

Applicant: COMBUSTION ENG

Inventor： GILLETTE CARL L ,  RAMEY WILLIAM M

IPC: B41J2/285 ,  G01N29/00 ,  G01N29/04 ,  G01N29/22 ,  G01N29/44 ,  G01N9/24

CPC classification number: B41J2/285 ,  G01N29/0645 ,  G01N29/221 ,  G01N29/4436 ,  G01N29/4463 ,  G01N2291/044 ,  G01N2291/2675

Abstract: Ultrasonic inspection apparatus and method for detecting discontinuities in thick section zones of interest, such as weldments. Ultrasonic energy is beamed at and accoustically coupled to the surface of a material having a weldment therein. The angle of incidence of the beam with the surface is controlled to provide in the material a refracted beam of ultrasonic energy in the longitudinal wave mode at an angle and in a direction which intersect the weld at an oblique angle relative to the surface at the weld. An ultrasonic receiving transducer positioned over the weld senses ultrasonic energy redirected by any discontinuity in the weld.

Abstract translation: 超声波检测装置及检测方法，用于检测感兴趣的厚区域（如焊件）的不连续性。 超声能量在其中具有焊件的材料的表面上被辐射并且声耦合。 控制光束与表面的入射角被控制，以在纵向波模式中以与倾斜角度相交的角度和方向以相对于焊缝表面倾斜的角度在材料中提供超声能量的折射束 。 位于焊缝上方的超声波接收传感器感测到由​​焊缝中的任何不连续性重定向的超声能量。