Explore Eddyfi Technologies Product Lines
Remote Monitoring Solutions
Nuclear Steam Generators
Automated Vision Systems
Robotics Solutions
Total Focusing Method (TFM)
How does TFM Work?
The Total Focusing Method (TFM) is an ultrasonic array technique which is used to synthetically focus at every point of a region of interest.
Details
1st Step: Data Collection with Full Matrix Capture (FMC)
- Full Matrix Capture (FMC) is another way of collecting phased array data
- This technique doesn’t require any knowledge of the piece to be inspected (nor shape, nor velocities)
- Each element is just activated (shot) one by one
- All the elements in reception are recorded and thus a Matrix of signal is stored in order to be processed
2nd Step: Reconstruction: Total Focusing Method (TFM)
Main Advantages of TFM
- Optimal focusing and spatial resolution everywhere
- Direct imaging of a large area for one probe position
- All reachable angles with the array simultaneously
- Defect characterisation
- Comprehensive imaging of defect
- 3D imaging
Comparison with Electronic Scanning
Electronic scanning
- 8-element aperture
- Focused along the defects in the middle
- 57 shots
TFM
- 64-element aperture
- Focused everywhere
- 64 shots
Electronic scanning
TFM
Comparison with Sector Scanning
Sectorial scanning
- 64-element aperture
- Focused along the defects in the middle
- Sectorial between -55° and 55° with 110 shots
TFM
- 64-element aperture
- Focused everywhere
- 64 shots
