Fracture toughness and failure behavior of CF/epoxy composites interleaved with melt‐infused PET, PEI, and PEEK film
Daniel Kipkirui Too,
Sanjay Kumar,
Yun‐Hae Kim
Abstract:This study investigates the effect of incorporating polyethylene terephthalate (PET), polyetherimide (PEI), and polyether‐ether‐ketone (PEEK) thermoplastic films in melt form as interlayers to toughen carbon fiber/epoxy composites. The addition of melt‐infused PET, PEI, and PEEK film into carbon fiber/epoxy composite enhanced the mode‐I interlaminar fracture toughness (ILFT) by 60%, 156%, and 284%, respectively. The primary toughening mechanisms found were plastic deformation and mechanical interlocking throug… Show more
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