Issue 49

V. Matveenko et alii, Frattura ed Integrità Strutturale, 49 (2019) 177-189; DOI: 10.3221/IGF-ESIS.49.19 183 Figure 7 : Variants of the representation of a polymer composite material with embedded optical fiber. Figure 8 : Finite element mesh of the model with embedded optical fiber and resin pocket. The purpose of numerical experiments is to calculate the strains 1 2 3 , ,    in the optical fiber under different loading options, and to calculate the values * 1   and * 2   according to Eq. (2). Wherein, the coincidence of the strain 3 