Dashboard UT / Section 1: Basics / Chapter 4: Basic Theory

Dual Elements

Dual Elements

Dual element probes are used when near surface resolution is needed.

  1. With a conventional probe, the interface signal is too large and hides the signal from the defect
  2. With a dual element probe  there is no interface signal so the signal from the defect is clear

Dual element probes are often use for corrosion mapping or lamination check in composites.