Nondestructive Testing of Metallic Cables Based on a Homogenized Model and Global Measurements
Figure 1
(a) uncoated cable with 7 bundles of strands, (b) 2D scalar model, (c) experimental setup: a part of the excitation and the measurement winding around the coated cable. The coating is removed on the left of the figure to clearly show the individual strands, (d) cable where one bundle of strands is removed over a length of 1 cm. To make the defect visible, the coating is removed and the “defect” bundle of strands is folded in radial direction. Evidently, the method for NDT does not require the defect to be visible.
