Electromagnetic Testing

Experiments
C-Scan inspections of multilayered aircraft structures can be done using the
ARMANDA scanner (figure 1a), which is a portable scanner that can be fixed
on the structure. A PEC inspection was performed using this scanner on a
riveted eddy current standard (2 aluminum layers of 0.04” with the bottom
layer containing EDM notches of lengths of 0.250”, 0.200”, 0.150” and 0.100”
on the rivet holes edge and identified from {1} to {4} on figure 2a). For sample
inspection, we selected a conventional reflection eddy current probe (700 Hz
- 15 kHz). The PecScan driver/receiver unit (figure 1b) is used to drive the
probe, generate and receive the PEC signals.
Charlie Chong/ Fion Zhang
http://www.pecscan.ca/PDFs/Application-note-Cracks-Revised.pdf