公开(公告)号：US4577505A

公开(公告)日：1986-03-25

申请号：US634990

申请日：1984-07-27

申请人： Hans-Achim Jestrich ,  Paul Friedrich

发明人： Hans-Achim Jestrich ,  Paul Friedrich

IPC分类号： G01N29/04 ,  G01N29/24

CPC分类号： G01N29/2487 ,  G01N29/2437 ,  G01N2291/0421 ,  G01N2291/0422 ,  G01N2291/2693

摘要： A special angle beam probe for ultrasonic testing includes at least one ultrasonic vibrator fastened in a beam probe housing on a wedge-shaped support body which may be formed of Plexiglass, using damping means. The ultrasonic beam of the vibrator strikes the surface of the test piece at an incidence angle other than 0.degree., as measured from a perpendicular at the surface of the test piece at the point where the beam strikes. The ultrasonic beam furthermore strikes the test piece surface at an oblique angle between 0.degree. and 360.degree. subtended between a principal beam probe axis and the beam, as seen in the direction perpendicular to the beam probe from above. The novelty of the invention is that the special angle beam probe includes a multiplicity of prefabricated beam probe subassemblies. The ultrasonic vibrator of each subassembly is fastened with a predetermined incidence angle within a first beam probe housing. A second beam probe housing contains the test head subassembly and the test head subassembly can be fastened at least at one predetermined oblique angle within the second housing for forming the overall special angle beam probe. In this way a multiplicity of beam probe subassemblies with the same insonification angle form special angle beam probes with different, predetermined oblique angles, by assembling the subassemblies in second test head housings in different oblique angle relationships.

摘要翻译： 用于超声波测试的特殊角度束探头包括至少一个超声波振动器，该超声波振动器使用阻尼装置固定在可由有机玻璃形成的楔形支撑体上的束探针外壳中。 振动器的超声波束以不同于0度的入射角撞击试验片的表面，从在试样的表面处的垂直方向测量。 超声波束在主光束探针轴与光束之间以0°和360°之间的倾斜角度进一步撞击测试片表面，如从垂直于光束探头的方向看的那样。 本发明的新颖之处在于，特殊角度束探头包括多个预制的束探针组件。 每个子组件的超声波振动器以预定的入射角度紧固在第一光束探测器壳体内。 第二光束探测器壳体包含测试头子组件，并且测试头子组件可以在第二壳体内至少固定一个预定的倾斜角度，以形成整个特殊角度的光束探头。 以这种方式，通过以不同的倾斜角度关系将子组件组装在第二测试头壳体中，具有相同声子角的多个光束探测子组件形成具有不同的预定倾斜角度的特殊角度光束探头。

公开(公告)号：US4577507A

公开(公告)日：1986-03-25

申请号：US613902

申请日：1984-05-24

申请人： Hans-Achim Jestrich ,  Ewald Werntgen

发明人： Hans-Achim Jestrich ,  Ewald Werntgen

IPC分类号： G01N29/04 ,  G01N29/06 ,  G01N29/11 ,  G01N29/22 ,  G01N29/48

CPC分类号： G01N29/221 ,  G01N29/0618 ,  G01N29/11 ,  G01N29/48 ,  G01N2291/0258 ,  G01N2291/0422 ,  G01N2291/044 ,  G01N2291/2634 ,  G01N2291/2693

摘要： A method for the ultrasonic testing of disc bodies, shrunk onto shafts, is especially adapted for testing the shrink-fitted seats thereof adjoining the shafts and usually is provided with anti-rotation holes containing anti-rotation inserts. Such disc body arrangements are often used in the field of low pressure turbine rotor disc fastenings. The method is carried out by using ultrasonic angle beam probes operating according to a method of corner reflection or transversal waves within the range of critical angles of total reflection, or according to a method of grazing incidence. Both methods can be used as a pulse echo technique, or as a tandem technique. The probes are coupled to the curved side walls of the discs for following test patterns extending in circumferential direction of the disc bodies. Ultrasonic sound beams emanating from the probes are aligned toward the test regions of the inner surfaces of the hubs. Three axially adjacent test regions are tested. The outer regions are tested with the angle beam probes according to the principle of the pulse echo technique, whereas the central test region is tested according to the principle of the tandem technique with at least two of the angle beam probes, by transmitting with one of the probes on one of the side walls and receiving with another one of the probes on the opposite side wall of the wheel discs. The invention also relates to an apparatus for carrying out the method.

摘要翻译： 用于超声波测试的方法用于收缩到轴上的盘体，特别适用于测试邻近轴的收缩配合座，并且通常设置有防旋转插入物的防旋转孔。 这种盘体装置通常用于低压涡轮转子盘紧固件领域。 该方法通过使用根据在全反射的临界角范围内的角反射或横波的方法进行操作的超声角光束探头，或根据放射入射的方法进行。 两种方法都可以用作脉冲回波技术，也可以用作串联技术。 探针联接到盘的弯曲侧壁，用于沿盘体的圆周方向延伸的随后的测试图案。 从探头发出的超声波声束朝着轮毂的内表面的测试区域对齐。 测试三个轴向相邻的测试区域。 根据脉冲回波技术的原理，使用角度束探头对外部区域进行测试，而根据串联技术的原理，使用至少两个角度束探头测试中心测试区域，通过与 在一个侧壁上的探针并且在轮盘的相对侧壁上与另一个探针接收。 本发明还涉及一种用于执行该方法的装置。