Benefits of the eddy current array (ECA) Doubler Edge Skin Crack Inspection solution

• Time saving: up to ten times faster
  (typically 10 hours/person for 737 inspections).
• Referenced in the Boeing 737 manual
  (NTM 737 NDT 53-30-25 Part 6).
• Replaces existing ECT procedures
  (NTM 737 NDT 53-30-18 Part 6).
• Identical defect sensitivity to ECT.
• Higher probability of detection.
• Better reproducibility.
• Intuitive imagery with the encoded C-scan view.
• No need for paint removal.

The doubler and rivets appear on-screen for optimal probe positioning. The green/red color palette offers easy data interpretation.

Probe Specification

• 32-channel probe.
• Frequency range: 4 kHz to 225 kHz.
• Probe coverage: 64 mm.
• Cable length: 2.4 m.
• The encoder and probe cable are bundled together.
• Includes a special encoder holder.

Probe Performance

• Not sensitive to the corner of the doubler.
• Optimized to detect typical subsurface cracks in aluminum sheets with thicknesses up to 1.2 mm.
• Detects cracks up to 50% deep and 12 mm long on the far side.

Display showing C-scan, impedance plane, and strip chart views. Note that the doubler edge and rivets are clearly visible.

Excellent replacement for magneto-optic imaging (MOI) inspection systems

• Less expensive.
• Easier to use.
• Up-to-date technology based on proven eddy current technique.
• Data-recording capabilities.