Claims
- 1. An apparatus for performing electronic shearography on a test object comprising:
a shearography camera for taking an interference image of the test object, an image processor coupled to the shearography camera, the image processor being adapted to receive a plurality of sequential interference images from the shearography camera, produce a plurality of sequential shearogram images of the test object from the interference images and animate the sequential shearogram images to represent dynamically changing stress states on the tire, and a display coupled to the image processor for providing visualization of the animation of the sequential shearogram images.
- 2. The apparatus according to claim 1 wherein the image processor further includes a memory device for storing the shearogram images.
- 3. The apparatus according to claim 2 wherein the image processor is adapted to animate the shearogram images stored in the memory device.
- 4. The apparatus according to claim 1 wherein image processor is adapted to receive interference images from the shearography camera at a frame rate of at least fifteen frames per second.
- 5. The apparatus according to claim 1 wherein the image processor is adapted to animate the shearogram images at an animation rate of at least fifteen frames per second.
- 6. The apparatus according to claim 1 wherein the image processor is adapted to substantially simultaneously animate multiple shearogram image sequences representative of different sections of the test object.
- 7. The apparatus according to claim 1 wherein the image processor is a computer.
- 8. A method for analyzing a test object comprising:
(a) taking an interference image of a test object, (b) comparing the interference image with a baseline interference image to produce a shearogram image, (c) repeating steps (a) and (b) at varying stress levels to produce a plurality of shearogram images, and (d) displaying the plurality of shearogram images at a frame rate fast enough to generate an animation representative of dynamically changing stress states on the test object.
- 9. The method according to claim 8 further including the step of storing the shearogram images.
- 10. The method according to claim 8 wherein the frame rate is at least fifteen frames per second.
- 11. The method according to claim 8 further comprising simultaneously displaying multiple shearogram image sequences representative of different sections of the test object.
CROSS-REFERENCE TO RELATED PATENT APPLICATION
[0001] This patent application is a continuation of copending U.S. patent application Ser. No. 09/334,311 filed Jun. 16, 1999 the disclosure of which is hereby incorporated by reference.
Continuations (1)
|
Number |
Date |
Country |
Parent |
09334311 |
Jun 1999 |
US |
Child |
09835598 |
Apr 2001 |
US |