Structural health monitoring employing physics models

1. A method for detecting structural defects comprising:

acquiring a physics model of a structural component, the physics model based on geometric properties of the structural component and expected forces on the structural component during operation of the structural component;

generating a first probabilistic map of a critical location of a structural component based on the physics model;

capturing image data of the critical location;

generating a second probabilistic map based on an analysis of the captured image data of the critical location;

aligning the first probabilistic map and the second probabilistic map;

combining the aligned first and second probabilistic maps; and

determining if the structural component includes a structural defect based on the combined probabilistic maps.

2. The method of claim 1 , wherein the physics model is a Finite Element Analysis model.

3. The method of claim 1 , wherein the captured data comprises at least one of a 2D image, a plurality of 2D images, a video, and a 3D point cloud.

4. The method of claim 1 , wherein the step of aligning is based on a transformation obtained by model transformation between at least one of (i) the captured data and a geometric model of the critical location, (ii) the captured data and the physics model, and (iii) the first and second probabilistic maps.

5. The method of claim 1 , wherein the two probabilistic maps are combined based on a Bayesian method.

6. The method of claim 1 , further comprising rejecting false detections of structural defect based on the combined probabilistic maps.

7. The method of claim 1 , further comprising the step of providing an alarm if a structural defect is determined to exist.

8. The method of claim 1 , wherein the structural component is a component of an aircraft.

9. The method of claim 1 , wherein the determining step comprises analyzing values of the combined probabilistic maps.

10. The method of claim 1 , further comprising identifying the critical location based on the physics model.

11. A system for detecting a structural defect defining:

an image processing computer including a processor and memory, the memory having at least one physics model of a structural component stored therein, the physics model based on geometric properties of the structural component and expected forces on the structural component during operation of the structural component;

a camera configured to capture data of the critical location;

wherein the memory includes instructions stored thereon that, when executed by the processor, cause the system to:

generate a first probabilistic map of the critical location based on the physics model;

generate a second probabilistic map based on data captured by the camera;

align the first probabilistic map and the second probabilistic map;

combine the aligned first and second probabilistic maps; and

determine if the structural component includes a structural defect based on the combined probabilistic maps.

12. The system of claim 11 , wherein the physical model is a Finite Element Analysis model.

13. The system of claim 11 , wherein the camera is configured to capture at least one of a 2D image, a plurality of 2D images, a video, and a 3D point cloud.

14. The system of claim 11 , wherein the step of aligning is based on a transformation obtained by model transformation between at least one of (i) the captured data and a geometric model of the critical location, (ii) the captured data and the physics model, and (iii) the first and second probabilistic maps.

15. The system of claim 11 , wherein the two probabilistic maps are combined based on a Bayesian method.

16. The system of claim 11 , wherein the structural component is a component of an aircraft.

17. The system of claim 11 , further comprising an alarm configured to alert when a structural defect is determined to exist.

18. The system of claim 11 , wherein the processor is configured to identify the critical location based on the physics model.