Rapid ultrasonic inspection apparatus
阅读：21发布：2024-01-19
专利汇可以提供Rapid ultrasonic inspection apparatus专利检索，专利查询，专利分析的服务。并且A probe for a non-destructive testing to identify internal structural defects during continuous rolling contact with a workpiece surface. A rotatable element on the probe has a plurality of separate piezoelectric segments secured thereto and elastically supported to contact the workpiece individually and progressively. A dry acoustical couplant secured to each segment forms a mechanical bond and acoustical impedance match between the piezoelectric segments and the workpiece surface.，下面是Rapid ultrasonic inspection apparatus专利的具体信息内容。
1. An ultrasonic probe for use upon a surface of a workpiece for non-destructive testing to identify defects in the workpiece, said probe including: a rotatable flexible portion adapted for rolling along a surface of said workpiece; a purality of discrete and slightly spaced-apart segmented units movably attached substantially continuously around the periphery of said rotatable flexible portion and wherein said flexible portion is sufficiently resilient to permit each segmented unit supported therein to make progressive individual surface contact thereby allowing at least two adjacent units to simultaneously contact said workpiece surface during rolling of said rotatable portion therealong, said segmented units being piezoelectrically responsive and mounted to said flexible portion to provide an acoustical couple that is normal to the workpiece surface at all times, said units alternating as a receiver and transmitter as said probe is rolled along the workpiece surface, said segmented units comprise a first single segment reacting piezoelectrically as an emitter of an ultrasonic pulse, said pulse being transmittable within said workpiece; and said units further comprising a second single segment reacting piezoelectrically as a receiver of an ultrasonic pulse, said pulse being transmitted from said workpiece; both said first and second segments being adapted to contact and lie flat on said workpiece surface simultaneously as said rotatable flexible portion is flexibly deformed when rolled along said workpiece, and couplant means located between each of said units and said workpiece surface to provide efficient transmission of ultrasonic sound waves.
2. An apparatus as defined in claim 1 wherein: each of said segments responds piezoelectrically as both an emitter and a receiver of said ultrasonic waves.
3. An apparatus as defined in claim 1 wherein: each of said segments comprises a substantially planar surface adapted to contact said workpiece surface.
4. An apparatus as defined in claim 1 wherein: each of said segments comprises a concave surface adapted to contact said workpiece surface.
5. An apparatus as defined in claim 3 wherein: said rotatable flexible portion includes a segmented uNit supporting material, said segmented unit supporting material being resilient to permit slight depressing of each said segmented unit upon application of slight force against said unit toward said material, whereby upon rolling movement of said rotatable flexible portion upon said workpiece at least two of said segments of said segmented units will simultaneously contact and lie flat upon said workpiece.
6. An apapratus as defined in claim 5 wherein: said couplant means includes a layer of solventless elastomer resin.
7. An apparatus as defined in claim 6 wherein each of said segmented units further include: a backing member bonded to each segment thereof and movably supported within said flexible portion of said probe.
8. An apparatus as defined in claim 7 wherein said backing member comprises: an epoxy tungsten elongated stiffener to provide mechanical support to said individual segments and acoustical damping thereof.
9. An apparatus as defined in claim 7 wherein said flexible portion includes: a plurality of bores disposed between said backing members and parallel thereto, to provide for displacement within said flexible portion.
10. An apparatus as defined in claim 7 wherein: said rotatable portion includes substantially non-resilient segment supporting material adapted for acoustically damping stresses developed by said piezoelectric segments.
11. An apparatus as defined in claim 10 wherein: said couplant means includes a layer of adhesive upon which is applied a layer of particulate of a hard material.
12. An apparatus as defined in claim 10 wherein: said couplant means comprises a layer of solventless elastomer.
13. An apparatus as set forth in claim 12 wherein: each of said segments is substantially arcuate in configuration.
14. An apparatus as set forth in claim 12 wherein each of said segments comprises: an exterior surface having substantially the configuration of a parallelogram.
15. An ultrasonic probe apparatus for use upon a workpiece surface for non-destructively detecting internal defects including disbonds in laminated structures, said probe comprising: a substantially cylindrical rotatable portion, said rotatable portion including a resilient segment supporting material; support means for supporting said rotatable portion rotationally relative to said workpiece surface; a plurality of discrete and slightly spaced-apart segments secured to the periphery of said segment supporting material, each of said segments being piezoelectrically responsive and providing an acoustical couple that is normal to the workpiece surface at all times as said probe is rolled along the workpiece surface, each of said segments having a coating of electrically conducting material upon the interior and exterior surfaces thereof; electric signal supply means for supplying signals to each of said segments through said conducting material; a layer of adhesive attached to said exterior electrically conducting material of said segments; and a plurality of glass beads from 5 to 25 microns in diameter attached to said adhesive and adapted to make direct contact with said workpiece.
16. An ultrasonic probe apparatus as recited in claim 15 wherein said probe includes: an acoustical damping means secured to each segment thereof and mechanically supporting said segment in a movable relationship within said resilient supporting material.
17. An ultrasonic probe apparatus as recited in claim 16 wherein said acoustical damping means comprises: a triangular backing member bonded to each segment thereof providing means for said each segment to be movably supported within said cylindrical rotatable portion of the probe.
18. An ultrasonic probe apparatus as recited in claim 17 wherein said resilient supporting material includes: a plurality of spaced apart bores positioned between each of said backing member, whereby said resilient material can be dIsplaced as said segments contact the workpiece surface in a relatively flat manner.
19. An ultrasonic probe apparatus for use upon a workpiece surface having a weld point thereon for non-destructively detecting internal defects, said probe comprising: a first substantially cylindrical rotatable probe portion operably disposed about a concentric axis and position on one side of said weld joint; a second substantially cylindrical rotatable probe portion oppositely disposed along the same concentric axis with respect to the weld joint positioned therebetween; means for rotatably supporting said first and second probe portions providing said concentric axis therefor; adjusting means operably connected to said first and second probe portions whereby said probe portions can be adjusted relative to each other along said concentric axis for a specific workpiece configuration; said first and second probe portions have a plurality of discrete and slightly spaced-apart segments secured to said probes, each of said segments being piezoelectrically responsive; and said probe portions is provided with a plurality of planar-segments, and wherein at least one of said oppositely disposed probe portions is provided with a plurality of segments angularly positioned with respect to said workpiece surface forming a truncated cone-shaped configuration about said axis of said probe.
20. An ultrasonic probe apparatus as recited in claim 19 wherein each of said probe portions is provided with a plurality of piezoelectrically responsive segments disposed thereon at an angular relationship with respect to said workpiece surface forming a truncated cone shaped configuration, about said axis of said probe, said probe apparatus including a third probe portion disposed intermediate said first and second probe portions.
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