PSI - Issue 13

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Evgeny Lomakin et al. / Procedia Structural Integrity 13 (2018) 664–669 Evgeny Lomakin and B ris Fedulov / Structural Integrity Proc dia 00 (2018) 000–000

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Fig. 2. Compression test correlation for fiberglass fabric 1,2 –predicted loading diagrams

Fig. 3. Plane shear test correlation for fiberglass fabric 1,2 –predicted loading diagrams

Table 1. Coefficients for fiberglass fabric. (1/MPa) (1/MPa) (1/MPa) (1/MPa) (1/MPa) (1/MPa) 6E-5 2E-5 6E-5 2E-5 -1.6E-5 -2E-5

Fig. 4. Shear deformation parameter   12

12 12 /  Γ σ ε σ (1/MPa).

6. Effect of damage and strain rate on shear strength Experimental study of composite failures demonstrates post critical behavior of the material accompanied with a smooth decay of specimen stiffness, which is obviously observed in case of displacement loading. This effect can be considered from the point of view of damage parameters as a dependence of failure condition function on parameters.