STUDY ON THE FLEXURAL FRACTURE BEHAVIORS OF HELICOIDALLY LAMINATED CFRP

Abstract

Helicoidally laminated CFRP specimens replicated after a biological body are examined in plate flexure. The specimens were fabricated by stacking unidirectional prepregs with constant fiber angle difference between adjacent laminas. Point loading and distributed loading experiment in plate flexure were conducted, and flexural and fracture behaviors were observed. Compared to cross-ply laminate specimens, helicoidally laminated specimens show widely spread cracks and unique twisted delaminations. Under distributed loading, helicoidally laminated specimens show post-peak load recovery up to the peak load level.