Print Email Facebook Twitter Experimental and numerical investigation of ply size effects of steel foil reinforced composites Title Experimental and numerical investigation of ply size effects of steel foil reinforced composites Author Keller, A. (University of Applied Sciences and Arts Northwestern Switzerland) Geissberger, R. (University of Applied Sciences and Arts Northwestern Switzerland) Studer, J. (University of Applied Sciences and Arts Northwestern Switzerland) Leone, F. (University of Applied Sciences and Arts Northwestern Switzerland) Stefaniak, D. (Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR)) Pascoe, J.A. (TU Delft Structural Integrity & Composites) Dransfeld, C.A. (TU Delft Aerospace Manufacturing Technologies; University of Applied Sciences and Arts Northwestern Switzerland) Masania, K. (TU Delft Aerospace Manufacturing Technologies; University of Applied Sciences and Arts Northwestern Switzerland) Date 2021 Abstract The effect of ply thickness on the notch sensitivity and bearing properties on carbon fibre reinforced polymer composites and their hybrid laminates with steel foils were studied. Laminates with ply thicknesses of 0.3 mm and 0.03 mm comprising of CFRP and hybrid laminates were manufactured and characterized using tension, open hole tension and double lap bearing tests. A 25% ply substitution was found to double the bearing load with extensive plastic deformation in the joint while maintaining high stress and maintaining constant cross-sectional thickness in the laminate. With a good agreement between the finite element predicted values and failure behaviour, the damage initiation and progression behaviour could be observed experimentally. We numerically captured (i) rapid failure of 0° plies in the thin ply CFRP hybrid and (ii) continuous delamination with significant plastic deformation for the thick ply CFRP hybrid. The numerical results significantly reduce future experimental work when designing hybrid laminates and could allow the laminate lay-up to be tailored for load cases. Both the experiments and numerical models underline the distinct size effects occurring with respect to the ply thicknesses when hybridising a very ductile metal with a brittle yet strong composite material. Subject Fibre metal laminatesOpen hole damageThin ply composites To reference this document use: http://resolver.tudelft.nl/uuid:3ad1e7a9-2c62-432e-84d7-94d7ad654faf DOI https://doi.org/10.1016/j.matdes.2020.109302 ISSN 0264-1275 Source Materials & Design, 198 Part of collection Institutional Repository Document type journal article Rights © 2021 A. Keller, R. Geissberger, J. Studer, F. Leone, D. Stefaniak, J.A. Pascoe, C.A. Dransfeld, K. Masania Files PDF 1_s2.0_S0264127520308388_main.pdf 3.7 MB Close viewer /islandora/object/uuid:3ad1e7a9-2c62-432e-84d7-94d7ad654faf/datastream/OBJ/view