Research Article

Structural Health Monitoring of Steel Pipes under Different Boundary Conditions and Choice of Signal Processing Techniques

Figure 4

(a) experimental curves for defect-free and defective pipes when pipes are embedded in soil for 57° incident angle for defective and defect free pipes (b) theoretical phase velocity dispersion curves obtained for a steel pipe with experimentally obtained phase velocities for modes generating at 57° incident angle.
813281.fig.004a
(a)
813281.fig.004b
(b)