PSI - Issue 47

8

Rachid Bensaada et al. / Procedia Structural Integrity 47 (2023) 503–512 R. Bensaada et al. / Structural Integrity Procedia 00 (2019) 000 – 000

510

3.3 Tensylon testing by Arcan Similarly, as for the adhesive, the Tensylon® specimens were prepared following the aforementioned steps (Fig. 6b). The assembly is tested following four angles (0°, 22.5°, 45° and 90°). The stress states generated by these angles are already discussed in the Arcan presentation. The results obtained are given in Fig. 10.

a)

b)

c)

d)

Fig. 10. Load-displacement curves of Tensylon® at different stress states defined by Arcan angles: a) 0° (pure tensile); b) 22.5° (Tensile/Shear); c) 45° (Tensile/Shear); 90° (pure shear)

The ultimate stress is determined by dividing the ultimate stress obtained from each test by the bonded area (S=50x9.5mm²). This procedure is used to determine the envelope of Tensylon®. A correction coefficient was determined through numerical simulations (Thevenet et al. 2013) in order to correlate the maximum values of the tensile and shear numerical stress ( and ) stresses and the experimental average stresses ( and ) . =1.12 ; =1.29 (1) By using (1), the Tensylon® fracture envelope is determined and given in Fig. 11. This envelope could constitute the out-of-plane fracture threshold of Tensylon® following various stress states. The tendency is given to facilitate the interpretation of the data related to the material stress threshold.