Table 1 Subsidence distance during the axial compression test up to 3 kN, torsional stiffness with torque from 5 to 65 Nm under the rotational test, and internally rotated angle at torque of 70 Nm with 3 kN of compressive load
Defect morphology (length × width) (cm) (area) (mm2) | Control (none) (0) | Long (5 × 2) (1000) | Short (2.5 × 2) (500) | Square (3.2 × 3.2) (1024) | Square with Mesh (3.2 × 3.2) (1024) | P value |
|---|---|---|---|---|---|---|
Subsidence distance (mm) | 2.6 ± 0.1 (2.4 to 2.8) | 2.5 ± 0.1 (2.4 to 2.6) | 2.5 ± 0.1 (2.4 to 2.7) | 2.6 ± 0.3 (2.3 to 2.9) | 2.5 ± 0.3 (2.2 to 2.9) | 0.97 |
Torsional stiffness (Nm/deg.) | 4.8 ± 0.3 (4.5 to 5.2) | 4.4 ± 0.3* (4.0 to 4.7) | 4.5 ± 0.2 (4.3 to 4.8) | 4.3 ± 0.3* (4.0 to 4.7) | 4.6 ± 0.2 (4.4 to 4.8) | 0.03 |
Internally rotated angle (deg.) | 15.0 ± 1.2 (13.5 to 16.4) | 15.4 ± 0.6 (14.6 to 16.2) | 15.7 ± 0.4 (15.2 to 16.2) | 15.7 ± 0.5 (15.2 to 16.3) | 15.1 ± 0.4 (14.7 to 15.6) | 0.29 |