Table II.
Statistical results (mean ± standard deviation) for NiTi wire and SMA knitted actuators based on three repeated thermal cycles per fixed length (L1,2,3,…,n).
| L1 | L2 | L3 | L4 | L5 | ||
|---|---|---|---|---|---|---|
| 70°C Flexinol Wire | FA [N] | 6.2 ± 0.1 | 6.6 ± 0.1 | 8.4 ± 0.1 | 10.8 ± 0.1 | N.A. |
| FS [N] | 1.9 ± 0.1 | 4.9 ± 0.1 | 9.5 ± 0.1 | 13.0 ± 0.1 | N.A. | |
| FM [N] | 0.6 ± 0.1 | 5.3 ± 0.1 | 10.9 ± 0.1 | 14.8 ± 0.1 | N.A. | |
| NiTi #4 Wire | FA [N] | 0.0 ± 0.1 | 4.8 ± 0.4 | 4.8 ± 0.3 | 4.6 ± 0.1* | N.A. |
| FPS [N] | 0.3 ± 0.1 | 3.4 ± 0.1 | 3.8 ± 0.2 | 3.9 ± 0.1* | N.A. | |
| FM [N] | 0.0 ± 0.0 | 0.1 ± 0.1 | 0.2 ± 0.1 | 3.6 ± 01* | N.A. | |
|
70°C Flexinol Knitted Actuator |
FA [N] | 0.8 ± 0.1 | 1.0 ± 0.1 | 1.2 ± 0.1 | 1.7 ± 0.1 | 4.2 ± 1.1* |
| FS [N] | 0.5 ± 0.1 | 0.8 ± 0.1 | 1.4 ± 0.1 | 2.5 ± 0.1* | 5.3 ± 0.8* | |
| FM [N] | 0.0 ± 0.0 | 0.1 ± 0.0 | 0.3 ± 0.1 | 1.0 ± 0.1* | No data* | |
|
NiTi #4 Knitted Actuator |
FA [N] | 0.4 ± 0.1 | 0.6 ± 0.1 | 1.2 ± 0.1 | 1.8 ± 0.1 | 2.6 ± 0.6* |
| FPS [N] | 0.3 ± 0.1 | 0.7 ± 0.1 | 1.6 ± 0.1 | 3.0 ± 0.1 | 4.9 ± 1.0* | |
| FM [N] | 0.0 ± 0.1 | 0.2 ± 0.1 | 0.6 ± 0.1 | 1.6 ± 0.2 | 4.1 ± 1.1* |
*
Indicates less than 3 data points used due to equipment errors.