Issue 53

Y. Saadallah, Frattura ed Integrità Strutturale, 53(2020) 417-425; DOI: 10.3221/IGF-ESIS.53.32 419 / e e E    ;     / f e f e F        ;     / d f d f D        (1) Figure 1: Scanning electron micrographs of the three sections of cork [5]. Figure 2: Test set-up and cork specimen. where E, F, D are respectively the slopes of the three different domains. e  , f  , d  and e  . ,,  d represent respectively the stresses and strains at the boundaries of each of the three domains. So, we write the behavior model as follows:                                                           e e e f e f f d E E F F E E F F D D D EF F . (2) Radial section Axial section Tangential section