Abstract
The effect of ply thickness t in intralaminar fracture of unidirectional thin-ply carbon-epoxy laminates is characterized by testing double cantilever beam (DCB) and compact tension (CT) specimens with different t. While the average intralaminar energy release rate (ERR) at initiation is found equal to the corresponding interlaminar values, the steady-state intralaminar ERRs, only reached in the DCB configuration, are approximately three times higher than the corresponding interlaminar values. Due to changes in the extent of bridging, intralaminar steady-state ERRs are ∼30% higher in thick-ply (t = 0.150 mm) than in thin-ply laminates (t = 0.030 mm). Thin-ply composite laminates exhibit a faster ERR growth with crack length, and for DCB, reach steady-state at a much shorter crack extension than thick-ply composites. Traction profiles, due to bridging, are identified using R-curves and implemented in cohesive element simulations to predict intralaminar fracture of DCB and CT specimens. The experimental and simulated load–displacement responses are in good agreement.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Composites Part A: Applied Science and Manufacturing
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
