Effects of Delamination on Guided Waves in a Symmetric Laminated Composite Beam

Table 2

Comparison of the natural frequencies (Hz) obtained by SEM and ANSYS for the delaminated composite beam shown in Figure 5 (𝑙_𝑤 = 5 mm, 𝑟=0.25).

Mode number	1	3	5	10
SEM (12)	21.482	375.43	1204.3	4155.3
ANSYS (174)	21.504	385.52	1421.9	10490
ANSYS (622)	21.499	375.58	1206.0	4190.6
ANSYS (3422)	21.499	375.55	1205.3	4166.9

Note: ( ) is the number of degrees of freedom used in the analysis.