Damage Detection in Plates with the Use of Laser-Measured Mode Shapes

Table 1

List of numerical simulations along with the first five natural frequencies of the plate.

Simulation	Specimen state	F1	F2	F3	F4	F5
S#1–S#2	Intact, T = 20 C	14.93	70.97	92.76	228.32	259.24
S#3	Intact, T = 25 C	14.91	70.84	92.60	227.92	258.78
S#4	Intact, T = 30 C	14.88	70.72	92.43	227.51	258.32
S#5	Intact, T = 35 C	14.85	70.59	92.27	227.10	257.85
S#6	Intact, T = 40 C	14.83	70.47	92.10	226.70	257.39
S#7	Intact, T = 45 C	14.80	70.34	91.94	226.29	256.92
S#8	Damage 1, 3 mm	14.93	70.97	92.75	228.28	259.19
S#9	Damage 1, 5 mm	14.94	70.97	92.73	228.22	259.11
S#10	Damage 1, 7.5 mm	14.94	70.97	92.71	228.13	258.98
S#11	Damage 1, 10 mm	14.95	70.98	92.65	227.96	258.73
S#12	Damage 2, 3 mm	14.93	70.96	92.77	228.31	259.25
S#13	Damage 2, 5 mm	14.92	70.94	92.77	228.28	259.26
S#14	Damage 2, 7.5 mm	14.91	70.92	92.77	228.25	259.27
S#15	Damage 2, 10 mm	14.88	70.87	92.77	228.18	259.30