Case 3(b) (unknown input)--Modal ID

f (Hz): 9.41, 11.83, 25.53, 31.97, 38.66, 48.09, 48.48, 60.19

z (%): 1.23, 1.10, 1.02, 1.35, 0.94, 0.97, 1.11, 0.97

f (Hz): 6.23, 9.91, 21.52, 28.90, 37.44, 47.34, 47.94, 60.03

z (%): 0.97, 1.21, 0.85, 0.95, 0.88, 0.86, 1.16, 0.98

Damage 1

FD2

f (Hz): 5.79, 9.51, 14.91, 24.90, 36.14, 41.33, 46.80, 54.25

z (%): 1.08, 1.28, 0.94, 0.84, 1.19, 1.02, 1.14, 0.91

No damage

Fu

Damage 2

FD2

Damage 1

FD1

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