Automated Inspection of Jet Engine Components

Project Description

  • Developing a solution allowing the analysis of turbine disc that is holding the blades​
  • Inspection of turbine discs using cameras and artificial intelligence to determine if there are any small cracks or defects that could damage the engine​
  • Design a system/process to remove human error from this inspection and speed it up as it is a timely procedure

Solution Generation

360° Optics

Approach:

Use small, 360-degree camera to capture internal geometry

Explanation:

  • Come at the dovetail from the top of flat surface
  • Treating dovetail as two separate ‘holes’, combining photos to show entire internal face as one long photo

Pros:

  • Easy to operate​
  • Time efficient ​
  • Produces wrapped and unwrapped images​
  • High quality resolution​
  • On-board lighting provided.

Cons:

  • Not sure how 360 camera will work with non-circular object​
  • Little information found online​
  • Complicated integration with current GE solution

Light Reflection

Approach:

Camera scanning from above dovetail, capturing the full image with the help of mirrors

Explanation:

  • Use of line scan camera to first have an overview of the dovetail
  • Process would be repeated with use of mirrors to capture hidden parts of the dovetail
  • For a 2 notch dovetail we would need 5 passes. 

Pros:

  • Use of GE line scan camera (no need for miniature, expensive technologies)​
  • Not expensive​
  • Precise image location, leading to easier image stitching​.

Cons:

  • Loss of qualities through mirrors​
  • Added complexity to create a 2D image (stitching of images through mirror)​
  • Time consuming 

Scanner Method​​

Approach:​

Using a scanner mounted in the robot arm, we can do precious scanning based on the shape of dovetail and generate the grayscale image​

Explanation:​

  • Commercial scanner with a high resolution​
  • The shape of dovetail is fixed, the robot arm can move along with the surface by pre-programming the route​
  • Scanning will be continuous, fast, and stable​
  • Scanner already has built-in white light. 

Pros:

  • High Resolution​
  • Live, direct image output​
  • Built-in White Light​
  • No image stitching needed​

Cons:

  • Hard to design​
  • Require lots of component design​
  • No experiment supporting

Team Members

Eric Silfies 
Arnaud Buard
Ruohan Xu
Jeffery Guaman
Adam Montalvo

Faculty Mentor

Prof. Benjamin Akih Kumgeh