Thermomechanical characterisation data of 30 g/m2 and 150 g/m2 cured unidirectional carbon/epoxy tape prepreg TP 402/T700S

Abstract

With the aim to calculate through the Classical Laminate Theory the most reliable stress value generated in the 90° layer of cross-ply laminates tested under fatigue loading [1], the mechanical and thermal properties were measured for a novel composite material TP402/T700S 12K/35% using two different unidirectional tape prepregs, 30 and 150 g/m2. 0° unidirectional (UD-0), 90° unidirectional (UD-90), ±45°, 10° off-axis and samples for thermal properties measure- ments were manufactured in an autoclave. Tensile and thermal tests were performed in an Instron 4482 and in an oven, respectively, using strain gauges for all of them. Data collected was analysed following technical standards. The values of the mechanical properties, i.e., elastic and shear stiffness and strength, and the coefficients of thermal expan- sion (CTEs), α1 and α2, were calculated also obtaining the corresponding statistics.