PSI - Issue 38

Benaouda Abdellaoui et al. / Procedia Structural Integrity 38 (2022) 116–131 Benaouda Abdellaoui et al / Structural Integrity Procedia 00 (2021) 000 – 000

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5. Characterization of the pivot in fatigue 5.1. Bench test

After having characterized the material with an E-N approach, we carried out a calculation phase with the previous data. This phase will be detailed in a future publication [15]. Then, we characterized the pivot under the same operating conditions as the original part (see Fig. 7). That is to say with a stress generated by 2 hydraulic cylinders (V20 and 83) along 2 different axes. The angle between the two cylinders is 9.7 °. They drive the part fixed on a square at the same frequency and at the same time.

Pivot support

Pivot axe

Pivot

Square

Swivel interface

Hydraulic cylinder V83 et V20

Force cells

Fig. 7. Pivot bench

Digital Image Correlation (DIC, Fig. 8) was set up on the bench to measure the deformations applied to the pivot during the static tests.

Light source

Pivot

Pivot with speckle

Acquisition system

Cameras

Fig. 8. Pivot with speckle and DIC