Experimental Investigation of Interlaminar Fracture Toughness of CFRP Composites with Different Stitching Patterns

Abstract:

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.

• Periodical: Key Engineering Materials (Volumes 297-300)
• Pages: 189-194
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.297-300.189
• Online since: November 2005
• Authors: Hong Ping Zhao, Robert Kwok Yiu Li, Xi Qiao Feng
• Keywords: CFRP Laminate, DCB, Fiber Bridging, Fracture Toughness, Stitching

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