抄録
Composite materials, especially CF/epoxy 2-D laminates, have the capability of light weight design for in-plane high loading structures. On the other hand, interlaminar strength is not strong against a through-the-thickness direction load. The authors' group carried out an evaluation of interlaminar strength improved CFRP laminates which are reinforced by through-the-thickness fiber, such as Kevlar or carbon stitching and also Z-anchor^<TM> which technology is developed by Shikibo, Ltd. and Mffl, Ltd. This paper introduces the interlaminer strength improvement effects on CFRP laminates such as mode I energy release late of Gi for CF stitched CFRP laminates, impact damage propagation, and compression after impact (CAI) strength.
