SYSTEMS AND METHODS ENABLING AUTOMATED RETURN TO AND/OR REPAIR OF DEFECTS WITH A MATERIAL PLACEMENT MACHINE

• US 20050203657A1
• Filed: 03/12/2004
• Published: 09/15/2005
• Est. Priority Date: 03/12/2004
• Status: Active Grant

• Current Assignee: The Boeing Co.
• Original Assignee: The Boeing Co.
• Inventors: Hannebaum, Reed, Johnson, Brice A., Engelbart, Roger W., Schrader, Steve, Chapman, Michael R., Soucy, Kathryn A.
• Granted Patent: US 7,039,485 B2
• Time in Patent Office: Days
• US Class Current: 700/110
• CPC Class Codes: B29C 70/386 Automated tape laying [ATL]
• CPC Class Codes: G01N 2021/8472 Investigation of composite materials
• CPC Class Codes: G01N 21/8806 Specially adapted optical and illumination features

Abstract

A method generally includes electronically accessing positional data defining a defect location on a composite structure, and automatically causing a material placement machine to return to the defect location as defined by the positional data. The method can also include automatically causing the material placement machine to place or lay down material sufficient for repairing a defect at the defect location. Alternatively, the material placement machine may automatically return to a defect location, and then an operator may manually repair the defect at the defect location.

Claims

1. A method enabling automated repair of defects in a composite structure formed with a material placement machine that lays composite material in one or more courses and one or more plies to form the structure, the method comprising:

inspecting a course of the composite structure for defects;

determining whether a defect detected by the inspecting is unacceptable;

determining whether a defect detected by the inspecting is repairable by the material placement machine without user intervention; and

automatically causing the material placement machine to return to and place material sufficient for repairing a defect determined to be unacceptable and repairable by the material placement machine without user intervention.

2. The method of claim 1, further comprising automatically causing the material placement machine to return to each defect determined to be unacceptable.

3. The method of claim 1, wherein the automatically causing includes electronically accessing positional data defining a location of a defect.

4. The method of claim 1, wherein the automatically causing includes creating a program to automatically generate instructions for causing the material placement machine to return to and place material sufficient for repairing defects determined to be unacceptable and repairable by the material placement machine without user intervention.

5. The method of claim 1, wherein the method includes communicating with an inspection system performing the inspecting.

6. The method of claim 1, further comprising exterior monitoring of the material application position of the material placement machine to determine a location of a defect detected by the inspecting.

7. A method comprising:

using a material placement machine to lay one or more courses and one or more plies of composite material to form a composite structure;

inspecting the one or more courses for defects;

determining whether a defect detected by the inspecting is unacceptable; and

automatically causing the material placement machine to return to a defect determined to be unacceptable.

8. The method of claim 7, further comprising:

determining whether a defect is repairable by the material placement machine without user intervention; and

automatically causing the material placement machine to return to and place material sufficient for repairing a defect determined to be unacceptable and repairable by the material placement machine without user intervention.

9. The method of claim 7, wherein the automatically causing includes electronically accessing positional data defining a location of a defect.

10. The method of claim 7, wherein the automatically causing includes creating a program to automatically generate instructions for causing the material placement machine to return to a defect determined to be unacceptable.

11. The method of claim 7, wherein the method includes communicating with an inspection system performing the inspecting.

12. The method of claim 7, further comprising exterior monitoring of the material application position of the material placement machine to determine a location of a defect detected by the inspecting.

13. A method comprising:

using a material placement machine to lay one or more courses and one or more plies of composite material to form a composite structure;

electronically accessing positional data defining a defect location on the composite structure; and

automatically causing the material placement machine to return to the defect location as defined by the positional data.

14. The method of claim 13, wherein the automatically causing includes automatically causing the material placement machine to place material sufficient for repairing a defect at the defect location.

15. The method of claim 14, wherein the automatically causing includes automatically causing the material placement machine, after completing a ply of the composite structure, to return to a course of the ply in which a defect is located and place material along the course sufficient for repairing the defect.

16. The method of claim 14, wherein the automatically causing includes creating a program to automatically generate instructions in connection with the positional data, for causing the material placement machine to return to the defect location as defined by the positional data and place material sufficient for repairing the defect at the defect location.

17. The method of claim 16, wherein the program extracts the positional data from a first file to a second file and generates the instructions within the second file.

18. The method of claim 14, further comprising determining whether a defect is repairable by the material placement machine without user intervention, and wherein the automatically causing includes automatically causing the material placement machine to repair a defect determined to be repairable by the material placement machine without user intervention.

19. The method of claim 13, further comprising inspecting the composite structure for defects.

20. The method of claim 13, further comprising exterior monitoring of the material application position of the material placement machine to determine a first distance from a first reference point of the composite structure to a defect.

21. The method of claim 20, wherein the monitoring includes detecting and counting transitions between contrasting portions of a code ring coupled for common rotation with a compaction roller.

22. The method of claim 20, further comprising:

summing courses completed to produce a total completed course count; and

multiplying a predetermined course width by the total completed course count to determine a second distance from a second reference point of the composite structure to the defect.

23. The method of claim 22, wherein summing courses completed includes tracking receipt of signals from a machine load cell indicating whether pressure is being applied to a compaction roller.

24. The method of claim 13, further comprising determining whether a defect is unacceptable, and wherein the automatically causing includes automatically causing the material placement machine to return to a defect determined to be unacceptable.

25. A machine-readable medium for use with a processor having a memory, the machine-readable medium comprising:

instructions to cause the processor to access positional data defining a defect location on a composite structure formed by a material placement machine that lays composite material in one or more courses and one or more plies to form the structure; and

instructions to cause the processor to generate instructions to cause the material placement machine to return to the defect location as defined by the positional data and place material sufficient for repairing the defect at the defect location.

26. The machine-readable medium of claim 25, further comprising instructions to cause the processor to extract positional data from a first file to a second file, the second file including the instructions generated by the processor.

27. The machine-readable medium of claim 25, wherein the processor generates instructions for automatically causing the material placement machine, after completing a ply of the composite structure, to return to a course of the ply in which a defect is located and place material along the course sufficient for repairing the defect.

28. The machine-readable medium of claim 25, wherein the processor generates instructions for automatically causing the material placement machine to repair only defects which are determined to be unacceptable.

29. The machine-readable medium of claim 25, wherein the processor generates instructions for automatically causing the material placement machine to repair only defects which are determined to be repairable by the material placement machine without user intervention.

30. The machine-readable medium of claim 25, further comprising instructions to cause the processor to communicate with an inspection system capable of inspecting the composite structure for defects.

31. The machine-readable medium of claim 25, further comprising instructions to cause the processor to communicate with an inspection system capable of determining a location of a defect by exterior monitoring of the material application position of the material placement machine.

32. A machine-readable medium for use with a processor having a memory, the machine-readable medium comprising:

instructions to cause the processor to access positional data defining a defect location on a composite structure formed by a material placement machine that lays composite material in one or more courses and one or more plies to form the composite structure; and

instructions to cause the processor to generate instructions for automatically causing the material placement machine to return to the defect location as defined by the positional data.

33. The machine-readable medium of claim 32, further comprising instructions to cause the processor to extract positional data from a first file to a second file, the second file including the instructions generated by the processor.

34. The machine-readable medium of claim 32, wherein the processor generates instructions for automatically causing the material placement machine to return to only defects which are determined to be unacceptable.

35. The machine-readable medium of claim 32, further comprising instructions to cause the processor to communicate with an inspection system capable of inspecting the composite structure for defects.

36. The machine-readable medium of claim 32, further comprising instructions to cause the processor to communicate with an inspection system capable of determining a location of a defect by exterior monitoring of the material application position of the material placement machine.

37. A method comprising:

electronically accessing positional data defining a defect location on a composite structure;

automatically causing the material placement machine to return to the defect location as defined by the positional data; and

performing exterior monitoring of the material application position of the material placement machine to determine a first distance from a first reference point of the composite structure to a defect, the monitoring including detecting and counting transitions between contrasting portions of a code ring coupled for common rotation with a compaction roller.

38. A method comprising:

electronically accessing positional data defining a defect location on a composite structure;

automatically causing the material placement machine to return to the defect location as defined by the positional data;

performing exterior monitoring of the material application position of the material placement machine to determine a first distance from a first reference point of the composite structure to a defect;

summing courses completed to produce a total completed course count; and

multiplying a predetermined course width by the total completed course count to determine a second distance from a second reference point of the composite structure to the defect.

39. The method of claim 38, wherein summing courses completed includes tracking receipt of signals from a machine load cell indicating whether pressure is being applied to a compaction roller.