IP Library Granted Patent US 11,668,660
Granted Patent B2
US 11,668,660 · App. 17/037,534 · Granted Jun 6, 2023

Radiographic inspection system for pipes and other structures and material loss estimation

Inventors: David T Nisius (Des Plaines, IL); Clyde May (Pensacola, FL); Rajashekar Venkatachalam (Cypress, TX)
Assignee: Varex Imaging Corporation
G01N23/04G01N23/18G01N23/083G01N2223/04G01N2223/1013G01N2223/1016G01N2223/202G01N2223/3303G01N2223/401G01N2223/628G01N2223/646
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Quick Facts
Patent No.
US 11,668,660
App. No.
17/037,534
Granted
Jun 6, 2023
Kind
B2
Abstract

Some embodiments include a radiographic inspection system, comprising: a drive mechanism configured to move along a structure; a detector attached to the drive mechanism; a radiation source attached to the drive mechanism and positionable relative to the detector such that a width of the structure casts a radiation shadow on an active area of the detector; and control logic coupled to the detector and configured to: receive an image from the detector; generate side wall loss information based on the image; and generate bottom wall loss information based on the image.

Claims (54)

1. A radiographic inspection system, comprising:

a drive mechanism configured to move along a structure;

a detector attached to the drive mechanism;

a radiation source attached to the drive mechanism and positionable relative to the detector such that a width of the structure casts a radiation shadow on an active area of the detector; and

control logic coupled to the detector and configured to:

receive a single image from the detector;

generate side wall loss information based on the single image; and

generate bottom wall loss information based on the single image.

2. The radiographic inspection system of claim 1 , wherein the control logic is further configured to generate top wall loss information based on the single image.

3. The radiographic inspection system of claim 1 , wherein the drive mechanism is configured to rotate the detector and radiation source at least partially around the structure.

4. The radiographic inspection system of claim 1 , wherein the control logic is further configured to:

filter at least part of the single image to generate a filtered image;

normalize the at least part of the single image based on the filtered image to generate a normalized image; and

scale at least part of the normalized image based on a transfer function associated with the structure.

5. The radiographic inspection system of claim 1 , wherein at least one of the detector and the radiation source are detachable from the drive mechanism.

6. The radiographic inspection system of claim 1 , further comprising a positioning system configured to generate position information, wherein the control logic is configured to associate at least one of the single image, the side wall loss information, and the bottom wall loss information with the position information.

7. The radiographic inspection system of claim 1 , wherein the drive mechanism, and the detector are configured to move along a side of the structure opposite to structure supports supporting the structure.

8. The radiographic inspection system of claim 1 , further comprising a power source attached to the drive mechanism.

9. The radiographic inspection system of claim 1 , further comprising:

a communication interface;

wherein the control logic is configured to communicate at least one of the single image, the side wall loss data, and the bottom wall loss data through the communication interface.

10. A method of operating a radiographic inspection system, comprising:

positioning a drive mechanism, detector, and radiation source around a structure;

generating a single image of a section of the structure using the detector and radiation source including at least a width of the structure;

generating side wall loss information based on the single image; and

generating bottom wall loss information based on the single image.

11. The method of claim 10 , wherein:

positioning the radiation source comprises positioning the radiation source from the structure further than two times a diameter of the structure.

12. The method of claim 10 , further comprising:

generating top wall loss information based on the single image.

13. The method of claim 10 , wherein:

generating the single image of the section of the structure comprises generating a single image of the section of the structure and a calibrated object adjacent to the structure; and

generating the side wall loss information based on the single image comprises generating the side wall loss information based on a portion of the single image based on the calibrated object adjacent to the structure.

14. The method of claim 10 , further comprising:

moving the detector and radiation source along the structure to a second section of the structure;

generating a single image of the second section of the structure using the detector and radiation source including at least a width of the structure in the second section;

generating side wall loss information based on the single image of the second section; and

generating bottom wall loss information based on the single image of the second section.

15. The method of claim 10 , further comprising:

rotating the detector and the radiation source around the structure.

16. The method of claim 10 , further comprising:

filtering at least part of the single image of the structure to generate a filtered image;

normalizing the at least part of the single image based on the filtered image to generate a normalized image;

scaling at least part of the normalized image based on a transfer function associated with the structure.

17. The method of claim 10 , further comprising:

adjusting a position of the radiation source.

18. The method of claim 12 , further comprising:

generating wall loss information for an entire circumference of the structure based on the single image.

19. A radiographic inspection system, comprising:

means for generating radiation;

means for generating a single image based on the radiation coupled to the means for generating radiation;

means for moving the means for generating radiation and means for generating the single image based on the radiation; and

means for generating side wall loss information and bottom wall loss information based on the single image.

20. The radiographic inspection system of claim 19 , wherein the means for generating side wall loss information and bottom wall loss information based on the single image further comprise means for generating top wall loss information based on the single image.

Assignments (6)
RELEASE OF SECURITY INTEREST Recorded Mar 13, 2026
From: COMPUTERSHARE TRUST COMPANY, N.A.
To: VAREX IMAGING CORPORATION
Reel/Frame 074075/0921 →
SECURITY INTEREST Recorded Mar 13, 2026
From: VAREX IMAGING CORPORATION
To: ZIONS BANCORPORATION, N.A. DBA ZIONS FIRST NATIONAL BANK
Reel/Frame 075080/0934 →
RELEASE OF SECURITY INTEREST Recorded Mar 13, 2026
From: ZIONS BANCORPORATION, N.A. DBA ZIONS FIRST NATIONAL BANK
To: VAREX IMAGING CORPORATION
Reel/Frame 075081/0623 →
SECURITY AGREEMENT (NOTES) Recorded Dec 20, 2024
From: VAREX IMAGING CORPORATION
To: COMPUTERSHARE TRUST COMPANY, NATIONAL ASSOCATION, AS NOTES COLLATERAL AGENT
Reel/Frame 069746/0628 →
SECURITY INTEREST Recorded Mar 29, 2024
From: VAREX IMAGING CORPORATION
To: ZIONS BANCORPORATION, N.A. DBA ZIONS FIRST NATIONAL BANK, AS ADMINISTRATIVE AGENT
Reel/Frame 066949/0657 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 29, 2020
From: NISIUS, DAVID T, MR; MAY, CLYDE, MR; VENKATACHALAM, RAJASHEKAR, MR
To: VAREX IMAGING CORPORATION
Reel/Frame 053925/0205 →