Reaching maximum inter-laminar properties in GFRP/nanoscale sculptured aluminium ply laminates.

Bosbach, Björn, Baytekin-Gerngross, Melike, Heyden, Emil, Gerngross, Mark-Daniel, Carstensen, Jürgen, Adelung, Rainer and Fiedler, Bodo (2018) Reaching maximum inter-laminar properties in GFRP/nanoscale sculptured aluminium ply laminates. Composites Science and Technology, 167 . pp. 32-41. DOI 10.1016/j.compscitech.2018.07.033.

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The aim of the present work is to reach maximum inter-laminar properties in fibre metal laminates (FML) consisting of glass fibre reinforced polymer (GFRP) and aluminium (Al) plies. The Al plies are AA5019 and AA5754 alloys and pre-treated by nanoscale sculpturing before the FMLs are manufactured by resin transfer moulding. The nanoscale sculpturing of the Al plies leads to the formation of cubical hook-like structures on the surface giving rise to a three-dimensional mechanically interlocking surface. The inter-laminar properties of the FML are investigated by double-notch shear as well as double cantilever beam (Mode I) and end notched flexure (Mode II) testing methods and compared to untreated Al plies and conventional GRFP laminates as reference. As result the nanoscale sculptured Al plies show drastically increased inter-laminar mechanical properties due to highly improved inter-ply bonding between metal surface and resin. For all FMLs with nanoscale sculptured Al plies the delamination appears in the transition zone between glass fibres and matrix due to the lower adhesion of the glass fibre/matrix interface compared to the nanoscale sculptured Al ply/matrix interface. This proves that the maximum necessary inter-laminar properties are achieved.

Document Type: Article
Keywords: A. Hybrid composites A. Metals B. Delamination B. Surface treatments E: Resin transfer moulding (RTM)
Research affiliation: Kiel University > Kiel Marine Science
OceanRep > The Future Ocean - Cluster of Excellence
Kiel University
Refereed: Yes
Open Access Journal?: No
DOI etc.: 10.1016/j.compscitech.2018.07.033
ISSN: 0266-3538
Projects: Future Ocean
Date Deposited: 16 Jan 2019 09:31
Last Modified: 05 Mar 2019 10:03

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