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Improving the mechanical performance of unidirectional CFRP by metal-hybridization

Daniel, Stefaniak and Erik, Kappel and Boris, Kolesnikov and Christian, Hühne (2012) Improving the mechanical performance of unidirectional CFRP by metal-hybridization. ECCM15 - 15th European Conference on Composite Materials, 24.-28. Juni 2012, Venedig, Italien. ISBN 9788888785332

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Abstract

In CFRP primary structures the fraction of fibers aligned in load direction is limited due to the material’s notch and impact sensitivity. As a result, stiffness and strength per unit weight of the laminate on a given direction are lower than the corresponding values for a unidirectional composite. The present investigations show that the on-axis residual-strength-after-impact of unidirectional laminates can be increased significantly by interleaving thin steel foils and highly orthotropic laminates become applicable. Grit-blasting, as a common pre-treatment process for stainless steel surfaces, is not feasible for thin foils due to the increased risk of damaging the metallic substrate. Therefore, different pickling processes are investigated as a non-mechanical alternative pre-treatment. Thus, superior adhesion properties are achieved compared to mechanical pre-treatments.

Item URL in elib:https://elib.dlr.de/76182/
Document Type:Conference or Workshop Item (Speech, Paper)
Title:Improving the mechanical performance of unidirectional CFRP by metal-hybridization
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Daniel, Stefaniakdaniel.stefaniak (at) dlr.deUNSPECIFIED
Erik, Kappelerik.kappel (at) dlr.deUNSPECIFIED
Boris, Kolesnikovboris.kolenikov (at) dlr.deUNSPECIFIED
Christian, Hühnechristian.huehne (at) dlr.deUNSPECIFIED
Date:27 June 2012
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
ISBN:9788888785332
Status:Published
Keywords:Hybrid, Fiber-Metal-Laminate
Event Title:ECCM15 - 15th European Conference on Composite Materials
Event Location:Venedig, Italien
Event Type:international Conference
Event Dates:24.-28. Juni 2012
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research (old)
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Structures & Materials (old)
Location: Braunschweig
Institutes and Institutions:Institute of Composite Structures and Adaptive Systems > Functional Lightweight Structures
Deposited By: Stefaniak, Daniel
Deposited On:04 Jul 2012 12:10
Last Modified:04 Jul 2012 12:10

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