Study of the Complex Stiffness of a Vibratory Mechanical System with Shape Memory Alloy Coil Spring Actuator

Table 3

Experimental damping factor of the mechanical system as a function of temperature.

Temperature (°C)	Damping factor 𝜁eq
	Heating	Cooling
25	0.03037	0.02976
30	0.03096	0.03091
35	0.03124	0.03158
40	0.03179	0.03277
45	0.03241	0.03054
50	0.02823	0.02669
55	0.02465	0.02293
60	0.02048	0.02069
65	0.02027	0.02047
70	0.01947	0.02013