Tests on Pretrained Superelastic NiTi Shape Memory Alloy Rods: Towards Application in Self-Centering Link Beams

Table 2

Accumulated residual strains at typical loading cycles.

Specimens	Accumulated residual strains
	After incremental cycles		After 5 constant cycles		After 10 constant cycles		After 15 constant cycles		After 20 constant cycles		After 25 constant cycles
	ε0 (%)	ε0/ε25 (%)	ε5 (%)	ε5/ε25 (%)	ε10 (%)	ε10/ε25 (%)	ε15 (%)	ε15/ε25 (%)	ε20 (%)	ε20/ε25 (%)	ε25 (%)
D14/14-N-N	3.56	89.67	3.87	97.48	3.93	98.99	3.95	99.50	3.96	99.75	3.97
D14/14-300-30	1.38	60.00	1.91	83.04	2.10	91.30	2.20	95.65	2.27	98.70	2.30
D14/14-350-30	0.49	40.50	0.76	62.81	0.93	76.86	1.06	87.60	1.16	95.87	1.21
D14/14-400-30	0.53	38.13	0.84	60.43	1.03	74.10	1.16	83.45	1.31	94.24	1.39
D14/14-450-30	1.61	53.67	2.49	83.00	2.73	91.00	2.86	95.33	2.93	97.67	3.00