Longitudinal Guided Wave Inspection of Small-Diameter Elbowed Steel Tubes with a Novel Squirrel-Cage Magnetostrictive Sensor

Figure 8

UGW inspection results obtained from a tube with a notch defect in the horizontal straight section (a) and a tube with a through-wall defect at the elbow and a notch defect in the horizontal straight section (b).

(a)

(b)