6 Parameter Identification of Riveted Joints Using Vibration Methods 51 Table 6.1 Experimental natural frequencies of continuous and riveted plate Experimental natural frequencies [Hz] Mode number Continuous plate Riveted plate 1 4:41 4:43 2 18:42 19:92 3 27:28 27:74 4 58:87 57:44 5 75:57 78:82 Fig. 6.4 First five mode shapes of the continuous plate from modal tests (a)mode 1, (b)mode 2, (c)mode 3, (d)mode 4, (e)mode 5 Fig. 6.5 First five mode shapes of the riveted plate from modal tests (a)mode 1, (b)mode 2, (c)mode 3, (d)mode 4, (e)mode 5
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