Experimental Investigation of Interlaminar Fracture Toughness of CFRP Composites with Different Stitching Patterns
Through-thickness stitching is one of the most effective techniques to improve the delamination resistance of composite laminates. The effects of two different stitching patterns on the mode-I interlaminar fracture toughness of unidirectional carbon fiber reinforced plastics (CFRP) are examined experimentally in the present paper by using the double cantilever beam (DCB) test method. It is found that the zigzag stitching pattern results in a better toughening effect than the straight line pattern, and that the stitching density also has a considerable influence on the mode-I fracture toughness.
Young-Jin Kim, Dong-Ho Bae and Yun-Jae Kim
H. P. Zhao et al., "Experimental Investigation of Interlaminar Fracture Toughness of CFRP Composites with Different Stitching Patterns ", Key Engineering Materials, Vols. 297-300, pp. 189-194, 2005