Print Email Facebook Twitter Mode I fracture behavior of glass fiber composite-steel bonded interface Title Mode I fracture behavior of glass fiber composite-steel bonded interface: Experiments and CZM Author He, P. (TU Delft Steel & Composite Structures) Moreira Arouche, M. (TU Delft Steel & Composite Structures) Koetsier, M. (TU Delft Steel & Composite Structures) Pavlovic, M. (TU Delft Steel & Composite Structures) Date 2024 Abstract Debonding is characterized as the governing failure mode in the innovative wrapped composite joints made with glass fiber composite material wrapped around steel hollow sections without welding. The prerequisite for predicting debonding failure of wrapped composite joints is to obtain fracture behavior of the composite-steel bonded interface. The mode I fracture behavior of the bonded interface was experimentally investigated using glass fiber composite-steel double cantilever beam (DCB) specimens. The crack length a and the crack tip opening displacement (CTOD) during the test were accurately measured by analyzing the digital image correlation (DIC) data while the strain energy release rate (SERR) was calculated through the extended global method (EGM). The cohesive zone modeling (CZM) was utilized in the finite element model with the proposal of a four-linear traction-separation law to simulate the mode I fracture process. An approach is introduced to determine the critical stages of the proposed four-linear cohesive law by combining accurate measurements of crack length a and CTOD, along with SERR values. The validity of the four-linear cohesive law and the introduced approach to determine the critical stages were confirmed by good agreement in both global and local behavior between the testing and the FEA results. Subject Composite-steel bonded interfaceCZMDCBDICFour-linear traction-separation lawmode I fracture behavior To reference this document use: http://resolver.tudelft.nl/uuid:6da9cf1d-1a6e-4ca7-8253-d809acf56066 DOI https://doi.org/10.1016/j.compstruct.2023.117814 ISSN 0263-8223 Source Composite Structures, 330 Part of collection Institutional Repository Document type journal article Rights © 2024 P. He, M. Moreira Arouche, M. Koetsier, M. Pavlovic Files PDF 1_s2.0_S0263822323011601_main.pdf 6.77 MB Close viewer /islandora/object/uuid:6da9cf1d-1a6e-4ca7-8253-d809acf56066/datastream/OBJ/view