Table 4.

Experimental scheme and peak response voltage of every subset.

Set	Static Preload/kN	Subset	Amplitude of Transient Step-Load/kN	Peak Response Voltage/V
1	300	1-1	50	0.4163
		1-2	100	0.8131
2	600	2-1	100	0.8467
		2-2	200	1.716
		2-3	400	3.372
3	1000	3-1	200	1.737
		3-2	400	3.097
		3-3	500	3.890
4	1500	4-1	50	0.3969