The Evolution of Powerful Video Borescopes
Tom Danvers (Global Aerospace Product Manager) and Sheldon McCrackin (Senior Software Manager) weigh in on how more powerful video borescopes improve visual inspections.
- Generate high definition (HD) quality images
- Record HD video
- Generate a 3D representation of the asset and perform accurate measurements
- Stitch multiple 3D representations together to form a composite image of the scene
- Stream video and provide control of the video borescope from an iOS or Android device
- Count blades
- Analyze scene for defects
- Connect to local wi-fi hotspot and send images and videos to the cloud
All of this: at the same time!
Measurement is non-negotiable for many industrial in-situ visual inspection applications. Quantifying the size and location of defects is needed for the highly trained and experienced inspectors to make vital decisions that determine the serviceability of the asset. The value of trustworthy, reliable, and indeed user-friendly measurement capability cannot be underestimated. Real3D Phase Measurement uses patented structured light technology enabling inspectors to locate, measure, and analyze an indication using the same tip optic. The fully surfaced point cloud enables precise cursor location for accurate results. The responsiveness and speed of measurement calculations are directly related to processing power on board the video borescope.
Better Probability of Detection (POD)
Detection of defects, and probability of finding them all, previously relied on the eyes of the inspector alone. Modern video borescopes offer analytics that turn the video borescope into a second set of eyes during the inspection to flag the user when a possible defect is detected. Over 8000 images were used to train one Assisted Defect Recognition (ADR) model, Gas Power Assist, for the Mentor Visual iQ VideoProbe to recognize several different defect types on airfoils, combustion liners and shroud liners within a gas turbine. The onboard processor analyzes individual frames from the live video stream in real-time for the presence of defects and the hardware must support the analytic to run continuously in the background without impacting the overall performance.
Development of New Applications
Another application of analytics is for a critical, but mundane, aspect of engine inspection: counting blades. A simple and elegant solution is provided in a product that recognizes the features of a blade passing through a scene to automatically count the blades for you to ensure the data collected is associated to the correct location within the asset. This analytic must also run, in parallel with the defect detector, whilst making measurements and automatically saving the same data files to the cloud.