Issue 53

P. Fathi, Frattura ed Integrità Strutturale, 53 (2020) 457-473; DOI: 10.3221/IGF-ESIS.53.36 462 Unit Glass / Epoxy (unidirectional) Properties   2 1 E N/ mm 6 10  39 Longitudinal elastic modulus   2 2 E N/ mm 6 10  8/6 Transverse elastic modulus   2 12 G N/mm 6 10  3/8 Shear modulus   t X MPa 1080 Ultimate longitudinal tensile strength   c X MPa 620 Ultimate longitudinal pressure strength   t Y MPa 39 Ultimate transverse tensile strength   c Y MPa 128 Ultimate transverse pressure strength   MPa S 89 Ultimate plate shear stress   MPa S 35 Ultimate shear strength of the plate     0.28 Poisson's ratio ρ (kg/m 3 ) 2100 Density Table 4: Mechanical Joints properties of composite material [16]. Figure 1: Fabric used in composite plates. Figure 2: Mesh cut of the fabric and Dacron.