A quantitative assessment of the damage mechanisms of CFRP laminates interleaved by PA66 electrospun nanofibers using acoustic emission

Interleaving composite laminates with nanofibrous mat is one of the most reliable methods for increasing interlaminar fracture toughness . The present study seeks to find out how damage mechanisms carbon fiber reinforced polymers (CFRPs), subjected mode-I and mode-II tests , are affected while those modified by interleaved Polyamide 66 (PA66) electrospun layers. For this goal, acoustic emission (AE) scanning electron microscope (SEM) techniques were used assessing mechanisms. test results showed that adding nanofibers could decrease matrix cracking breakage fiber/matrix debonding 92%, 27%, 87%, respectively. AE demonstrated no occurred during loading in both non-modified nanomodified specimens which was validated SEM images. On other hand, two modes, i.e. debonding, decreased about 97% laminates.