Study of hourglass-shaped specimens for the analysis of compression behaviour in fibre direction of FRP composites using compression and four-point bending tests

Flat hourglass specimens are proposed to assess the compressive behaviour of FRP utilizing two testing techniques. The shape helped ensure failure at centre specimen and minimize in-plane stress concentration in this zone. Four-point bending tests carried out measures performed via DIC. A procedure calculate moment is validated presence large displacements. To evaluate method proposed, different materials were tested, an E-glass/Epoxy unbalanced woven a Carbon/PEEK balanced woven. In second time ASTM D695 compression on E-Glass/Epoxy composite compare standardized dog-bone. techniques analysed compared.