PSI - Issue 28

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Jesús Toribio / Procedia Structural Integrity 00 (2020) 000–000

Jesús Toribio et al. / Procedia Structural Integrity 28 (2020) 2410–2415 © 2020 The Authors. Published by ELSEVIER B.V. This is an open access article under the CC BY-NC-ND license (https://cre tivecommons.org/licenses/by-nc-nd/4.0) Peer-review under responsibility of the European Structural Integrity Society (ESIS) ExCo Keywords: Progressively cold drawn pearlitic steels; hierarchically structured materials (HSM); microstructural anisotropy; strength anisotropy; mixed mode propagation; fatigue crack paths; fracture crack paths; crack deflection; delamination; anisotropic fracture behaviour; directional toughness. 1. Introduction The paper reviews previous works by the author on fatigue & fracture crack paths in cold drawn pearlitic steel. On the basis of the multi-scale (or multi-level) microstructure of the analyzed material, it is related to the conceptual frame of the painter Maurits Cornelis Escher and the musician Johann Sebastian Bach. In addition, the paper represents an orteguian approach (in the sense of the circumstance formulated by José Ortega y Gasset) and, as it revisits previous scientific works, the article can be considered as a heartfelt tribute to Fray Luis de León´s “decíamos ayer” ( as we were saying yesterday ) after the 800 th anniversary of the University of Salamanca (Fig. 1). 2411

Fig. 1. Statue of Fray Luis de León in Salamanca.