公开(公告)号：US09952183B2

公开(公告)日：2018-04-24

申请号：US14851739

申请日：2015-09-11

申请人： Jinchi Zhang ,  C. Tricia Liu ,  Jason Habermehl

发明人： Jinchi Zhang ,  C. Tricia Liu ,  Jason Habermehl

IPC分类号： G01N29/07 ,  G01N29/28

CPC分类号： G01N29/07 ,  G01N29/221 ,  G01N29/2487 ,  G01N29/262 ,  G01N29/28 ,  G01N2291/011 ,  G01N2291/0421 ,  G01N2291/106

摘要： Disclosed is a composite focusing wedge for ultrasonic non-destructive testing/inspection. The composite wedge comprises a base made of machined or cast material, and a lens made of a material which is cast in liquid form and subsequently solidifies. The acoustic velocity in the base material is less than that in the lens material. The castable lens material conforms exactly to a convex machined or cast surface of the base, thereby forming a concave lower surface of the lens. A flat ultrasonic probe is coupled to a planar upper surface of the lens. The minimum distance between the lower concave and upper planar surfaces of the lens is less than one acoustic wavelength in the lens material. The ringdown time of reverberations between the two surfaces is then sufficiently short that there is no interference between the reverberations and signals from sub-surface flaws in the object being tested.

公开(公告)号：US09746446B2

公开(公告)日：2017-08-29

申请号：US14814943

申请日：2015-07-31

申请人： Denis Faucher

发明人： Denis Faucher

IPC分类号： G01N29/04 ,  G01N29/26 ,  G01N27/90 ,  G01N29/06 ,  G01N29/265 ,  G01N29/22 ,  G01N27/82

CPC分类号： G01N29/225 ,  G01N27/82 ,  G01N27/9093 ,  G01N29/041 ,  G01N29/06 ,  G01N29/262 ,  G01N29/265 ,  G01N2291/0289 ,  G01N2291/2634

摘要： Disclosed is a probe holder for in-line inspection of the surface of bars of high value alloys. To attain full coverage of the inspected surface, the bar is rotated while either the bar or the probe holder is translated. The probe holder of the invention ensures constant probe lift-off by allowing the probe to move freely under its own weight, while constraining the motion to be only in the radial direction of the bar. The lift-off distance is defined by a spacer which is made of soft material to avoid damaging the inspected surface. Although the spacer is soft, its wear due to friction with the rotating bar is minimized by minimizing the pressure between the spacer and the bar. This is achieved by resting most of the mechanism weight on two rollers, with only the much smaller weight of the probe resting on the spacer.

公开(公告)号：US09952185B1

公开(公告)日：2018-04-24

申请号：US14790626

申请日：2015-07-02

申请人： Antoine Delhomme ,  Benoit Lepage

发明人： Antoine Delhomme ,  Benoit Lepage

IPC分类号： G10K15/00 ,  G01N29/30 ,  G01N29/07 ,  G01N29/26

CPC分类号： G01N29/30 ,  G01N29/07 ,  G01N29/262 ,  G01N29/4436

摘要： The method of validating a calibration of a phased-array inspection instrument uses a calibration block having two reflectors located below an inspection surface at two different depths. The method comprises: obtaining angle reference data associating expected angles with corrected angles, each corrected angle being usable to propagate a phased-array beam into the calibration block at a true angle relative to the inspection surface that corresponds to the corresponding expected angle; propagating, from the inspection surface and targeting each one of the two reflectors, phased-array beams into the calibration block at a true angle using the angle reference data, and measuring echo signals associated with the propagated phased-array beams; determining time-of-flight values corresponding to the reflection of the phased-array beams on the two reflectors using the echo signals; and validating the calibration of the phased-array inspection instrument using the time-of-flight values, the two different depths and the true angle.