Print Email Facebook Twitter Flexural performance of squared one-sided CFRP patches Title Flexural performance of squared one-sided CFRP patches: modelling and experimental study Author Abdelfattah, Ibrahim (University of Science and Technology) Ferreira, Francisca (University of Beira Interior) Saleh, M. (TU Delft Structural Integrity & Composites; TU Delft Aerospace Structures & Computational Mechanics) Reis, Paulo N.B. (University of Coimbra, Centre for Mechanical Engineering, Materials and Processes) Teixeira De Freitas, S. (TU Delft Structural Integrity & Composites) Date 2022 Abstract Three-point bending analysis, experimental and numerical, is conducted for three different sizes, 30*30 mm, 40*40 mm and 60*60 mm, of one-sided square cross-ply TEXIPREG HS 160 RM carbon-fiber-reinforced polymer (CFRP) patches as well as intact and notched specimens. The tests are carried out with the aim to study the influence of the patch’s size on the flexural properties of the specimen. Hashin-2D damage initiation criterion is adopted to investigate the failure in each ply, and the damage evolution is represented by the stiffness degradation. The intact and notched laminates flexural properties are investigated as well as notch sensitivity. The bonded patch repairs efficiency is investigated in the light of ultimate load, flexural modulus, peel and shear stresses along the bond-line as well as the damage initiation coefficient at critical zones. A significant advancement in the flexural modulus and ultimate load for the repaired laminates is noticed with increasing the patch’s size. A Parametric numerical study is conducted to investigate the influence of the patch size on the damage initiation coefficient at the critical zones. The recommended patch’s size is 44*44 mm in order to avoid failure initiation at the patch corner overlap on the parent laminate. Subject delaminationDestructive testingepoxy/epoxidesfinite element analysisrepair To reference this document use: http://resolver.tudelft.nl/uuid:63427970-6442-4b2c-8753-bbd95d64e9e0 DOI https://doi.org/10.1080/00218464.2021.2024807 ISSN 0021-8464 Source The Journal of Adhesion, 99 (3), 473-491 Part of collection Institutional Repository Document type journal article Rights © 2022 Ibrahim Abdelfattah, Francisca Ferreira, M. Saleh, Paulo N.B. Reis, S. Teixeira De Freitas Files PDF 00218464.2021.pdf 6.41 MB Close viewer /islandora/object/uuid:63427970-6442-4b2c-8753-bbd95d64e9e0/datastream/OBJ/view