PSI - Issue 26

Jesús Toribio et al. / Procedia Structural Integrity 26 (2020) 376–382 Toribio / Structural Integrity Procedia 00 (2019) 000 – 000

380

5

Such an anisotropic behaviour in the form of sudden changes in crack paths and very different lines ( or rays ) marking propagation direction also resembles the rayonist painting by Mijail Larionov (Fig. 7) in which many straight lines (many rays or directions) define the painted object.

Fig. 7. Painting by Mijail Larionov: Rayonist Sausages and Mackerel .

The different propagation directions defined by the crack paths in progressively drawn pearlitic steels also evoke the painting by Natalia Goncharova (Fig. 8), the other key member of the artistic movement called rayonism , launched on the basis of modern Physics in the XX and the discovering of X rays.

Fig. 8. Painting by Natalia Goncharova: Rayonist Sea .

6. Sculpture and fracture mechanics Previous works by Toribio (2017b) on hydrogen embrittlement of progressively cold drawn pearlitic steels shows evidence of a mechanism of hydrogen enhanced localized plasticity (HELP) in hot rolled or slightly cold drawn pearlitic steels associated with a micro-fracture mode by tearing topography surface (TTS). Results also reveal evidence of a mechanism of hydrogen enhanced decohesion, delamination or debonding (HEDE) in heavily drawn pearlitic steels linked with a micro-fracture mode by enlarged and oriented tearing topography surface (EOTTS). With regard to the HDT in the form of TTS in hot-rolled or slightly cold-drawn pearlitic steels, in certain sense it could be associated with the Michelangelo stone sculpture texture (MSST) shown in Fig. 9 for the Pietà di Firenze and the Pietá Rondanini (unfinished work exhibited in Milano). In the matter of the HDT in the form of EOTTS in heavily cold-drawn pearlitic steels, it would resemble the Donatello wooden sculpture texture (DWST) shown in Fig. 10 for the Penitent Magdalene and also for the work entitled Saint John the Baptist .