Method of Predicting Thermal or Chemical Effect In A Coated Or Painted Composite Material

• US 20110001047A1
• Filed: 01/08/2010
• Published: 01/06/2011
• Est. Priority Date: 08/14/2008
• Status: Active Grant

• Current Assignee: The Boeing Co.
• Original Assignee: The Boeing Co.
• Inventors: Shelley, Paul H., Vahey, Paul G., Werner, Gregory J.
• Granted Patent: US 8,436,311 B2
• Time in Patent Office: Days
• US Class Current: 250/341.8
• CPC Class Codes: G01N 2021/8472 Investigation of composite materials
• CPC Class Codes: G01N 21/3563 for analysing solids; Preparation of samples therefor
• CPC Class Codes: G01N 21/8422 Investigating thin films, e.g. matrix isolation method
• CPC Class Codes: G01N 2201/0221 Portable; cableless; compact; hand-held
• CPC Class Codes: G01N 2201/129 Using chemometrical methods

Abstract

A method of predicting thermal or chemical effect in a painted or coated composite material includes generating a calibration model, providing a composite material having a coating layer, irradiating the coating layer with infrared energy, detecting infrared energy reflected from the coating layer and predicting a thermal or chemical history of the coating layer using the calibration model and the infrared energy reflected from the coating layer.

Claims

1. A method of predicting thermal or chemical effect in a painted or coated composite material, comprising:

generating a calibration model;

providing a composite material having a coating layer;

irradiating said coating layer with infrared energy;

detecting infrared energy reflected from said coating layer; and

predicting a thermal or chemical history of said coating layer using said calibration model and said infrared energy reflected from said coating layer.

2. The method of claim 1 wherein said providing a composite material having a coating layer comprises providing a composite material having at least one paint layer.

3. The method of claim 1 wherein said providing a composite material having a coating layer comprises providing a composite material having at least one non-paint coating.

4. The method of claim 1 wherein said irradiating said coating layer with infrared energy comprises irradiating said coating layer with mid-infrared energy.

5. The method of claim 1 wherein said detecting infrared energy reflected from said coating layer comprises obtaining an infrared spectrum of said infrared energy reflected from said coating layer.

6. The method of claim 1 wherein said irradiating said coating layer with infrared energy and detecting infrared energy reflected from said coating layer comprises providing a spectrometer and irradiating said coating layer with infrared energy and detecting infrared energy reflected from said coating layer using said spectrometer.

7. The method of claim 6 wherein said providing a spectrometer comprises providing a hand-held spectrometer.

8. The method of claim 7 wherein said providing a hand-held spectrometer comprises providing a hand-held spectrometer having a diffuse-reflectance sampling interface.

9. A method of predicting thermal or chemical effect in a painted or coated composite material, comprising:

generating a calibration model by calibrating infrared data to thermal or chemical effect information on painted or coated composite standards;

providing a composite material having a coating layer;

irradiating said coating layer with infrared energy;

detecting infrared energy reflected from said coating layer; and

predicting a thermal or chemical history of said coating layer using said calibration model and said infrared energy reflected from said coating layer.

10. The method of claim 9 wherein said providing a composite material having a coating layer comprises providing a composite material having at least one paint layer.

11. The method of claim 9 wherein said providing a composite material having a coating layer comprises providing a composite material having at least one non-paint coating.

12. The method of claim 9 wherein said irradiating said coating layer with infrared energy comprises irradiating said coating layer with mid-infrared energy.

13. The method of claim 9 wherein said detecting infrared energy reflected from said coating layer comprises obtaining an infrared spectrum of said infrared energy reflected from said coating layer.

14. The method of claim 9 wherein said irradiating said coating layer with infrared energy and detecting infrared energy reflected from said coating layer comprises providing a spectrometer and irradiating said coating layer with infrared energy and detecting infrared energy reflected from said coating layer using said spectrometer.

15. The method of claim 14 wherein said providing a spectrometer comprises providing a hand-held spectrometer.

16. The method of claim 15 wherein said providing a hand-held spectrometer comprises providing a hand-held spectrometer having a diffuse-reflectance sampling interface.

17. A method of predicting thermal or chemical effect in a painted or coated composite material, comprising:

generating a calibration model by calibrating infrared data to thermal effect information on painted or coated composite standards;

providing a composite material having a coating layer;

irradiating said coating layer with mid-infrared energy;

detecting infrared energy reflected from said coating layer;

obtaining an infrared spectrum of said infrared energy reflected from said coating layer; and

predicting a thermal or chemical history of said coating layer using said calibration model and said infrared energy reflected from said coating layer.

18. The method of claim 17 wherein said irradiating said coating layer with infrared energy and detecting infrared energy reflected from said coating layer comprises providing a spectrometer and irradiating said coating layer with infrared energy and detecting infrared energy reflected from said coating layer using said spectrometer.

19. The method of claim 18 wherein said providing a spectrometer comprises providing a hand-held spectrometer.

20. The method of claim 19 wherein said providing a hand-held spectrometer comprises providing a hand-held spectrometer having a diffuse-reflectance sampling interface.

21. A method of predicting thermal effect in a painted or coated composite material, comprising:

generating a calibration model by providing composite standards having painted or coated surfaces, subjecting said painted or coated surfaces on said composite standards to varying degrees of heat intensity, irradiating said painted or coated surfaces on said composite standards with infrared energy, detecting said infrared energy reflected from said surfaces and obtaining infrared spectra of said infrared energy reflected from said surfaces;

providing a composite material having a painted or coated layer;

providing a hand-held spectrometer having a diffuse-reflectance sampling interface;

irradiating said layer with mid-infrared energy from said spectrometer;

detecting infrared energy reflected from said painted or coated layer with said spectrometer;

obtaining an infrared spectrum of said infrared energy reflected from said painted or coated layer; and

predicting a thermal history of said painted or coated layer using said calibration model and said infrared energy reflected from said painted or coated layer.