Ultrasonic Flaw Detection for Quality Assessment of Explosively Clad Plates
Figure 10
The ultrasonic oscillograph records of two reflectors with diameter mm and a backwall as a reference reflector: you can see equivalent reflector size ER = 3.97 mm for flat bottom hole (a) and side drilled hole with ER = 2.64 mm (b); DGS curve refers to Ø4 mm.