Experiment on Natural Frequency Change of Reinforced Concrete Members under Low Cycle Loading

Figure 9

Natural frequency-change curves. (a) Z-1, Z-2, Z-3. (b) J-1, J-2, J-3. (c) M-1, M-2, M-3. (d) Z-4, Z-5, Z-6. (e) J-4, J-5, J-6. (f) M-4, M-5, M-6. (g) Z-7, Z-8, Z-9. (h) J-7, J-8, J-9. (i) M-7, M-8, M-9.

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