4.2.2 Bending characterization

The bending test consisted in obtaining, respectively, a permanent angle of 15 and 30°, verifying the integrity of the sample when bending over a 40 mm radius. As in the previous case, the test was carried out on a sample in the as-received condition and on another one that had remained 300 hours in a salt spray chamber. After applying a bending of 15°, no visible defects appeared in any of the screws. With the 30°, small cracks can be seen in both samples; consequently, no differences are appreciated between samples regarding the bending ability. Figure 17 shows the appearance of the samples tested after bending 30°.

Figure 16. Tensile test on the screws.


Table 5. Parameters obtained in tensile tests.

#### Figure 17.

Appearance of the samples after the bending test.

Figure 18. Load cycles on clip.
