Experimental Modal Analysis

Specimen with induced delamination

Dynamic responses for healthy and delaminated composite plates are experimentally recorded for damage detection. Delamination is introduced by placing a square Teflon sheet (50mm x 50mm) in the laminate. Two different locations have been chosen for delamination in the laminated plates. In the first case Teflon sheet is placed at a distance of 50 mm from the clamped end. In the second case, it is placed at a distance of 150 mm from the clamped end. Teflon sheets are placed at top edge of the plate in both the cases to simulate delamination patterns of Delam Type-I and Type-II [Figure 37.2].

Figure 37.2 Composite plates with induced delaminations (Delam Type-I and Delam Type-II)