Citir, Aysun GuvenToros, SerkanOzturk, Fahrettin2024-11-072024-11-0720242291-8744https://doi.org/10.5267/j.esm.2024.3.004https://hdl.handle.net/11480/11482In this study, the delamination resistance of carbon fiber reinforced polymers (CFRP) consolidated with titanium alloy at the interface between the metal and composite was investigated experimentally and numerically. End-notched flexure (ENF) tests were performed to assess the fracture toughness (GIIC) for Mode II crack expansion of Ti6Al4V titanium alloy/CFRP composite parts. The EFN test is applied to Ti6Al4V-carbon fiber/low melt poly (aryl ether ketone) (CF/LM-PAEK) and Ti6Al4V-carbon fiber/poly (ether ketone ketone) (CF/PEKK) composites with the [0°]24 stacking sequence of unidirectional (UD) fibers. Experimental results indicate that the LM-PAEK composites exhibited Mode II strain energy release rate values 27.64 % higher than those of the PEKK composites. The finite element simulation by LS?DYNA shows good correlations with the experimental results, with an average error of 5.44 % for the PEKK and 10.58 % for the LM-PAEK, respectively. © 2024 Growing Science Ltd. All rights reserved.eninfo:eu-repo/semantics/openAccessCarbon-fiber-reinforced plastic (CFRP)DelaminationEnd-notched flexure test (ENF)Finite element analysis (FEA)Fracture toughnessTitanium/CFRP hybrid compositeArticle12444745810.5267/j.esm.2024.3.0042-s2.0-85197621649Q2