Fig. 7From: Ultrasonic pitch and catch technique for non-destructive testing of reinforced concrete slabs2D reconstructed image of backwall and fully-bonded rebars. a 2D reconstructed image at the location of the fully bonded rebars (refer to section 1–1 in Fig. 4a). b Backwall reflection at section A-A (refer to Fig. 7a). c Amplitude versus depth relationship at the location of a fully-bonded rebar (refer to section B-B in Fig. 7a)Back to article page