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Phenomenological investigation on crash characteristics of thin layered CFRP-steel laminates

Boose, Yannick and Kappel, Erik and Stefaniak, Daniel and Prussak, Robert and Pototzky, Alexander and Weiß, Lennart (2020) Phenomenological investigation on crash characteristics of thin layered CFRP-steel laminates. International Journal of Crashworthiness. Taylor & Francis. doi: 10.1080/13588265.2020.1787681. ISSN 1358-8265.

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Official URL: https://www.tandfonline.com/doi/full/10.1080/13588265.2020.1787681


Most energy absorbing structures in automotive applications consist of metals. Those are characterised by high absolute energy absorption (EA) values yet low mass-specific energy absorption (SEAm). In contrast carbon fibre reinforced polymers (CFRP) reach higher SEAm values. The difference however is not a direct consequence of the density, weight specific stiffness or strength. Instead, the failure progression and hence the energy dissipation characteristics of metallic and CFRP structures are different. Whether a combination of the two material types leads to an increase or decrease of the SEA depends on the crash characteristics of the laminate which supposedly depends on the lay-up. The present paper reports on an experimental investigation on the crash behaviour of omega-shaped fibre-metal laminates (FML) composed of unidirectional CFRP prepreg layers and steel-foils under compressive axial loads. A potential of the tested hybrid laminates is proven by an increase of the mass-specific energy absorption value (SEAm) of 58%, compared to CFRP.

Item URL in elib:https://elib.dlr.de/137357/
Document Type:Article
Title:Phenomenological investigation on crash characteristics of thin layered CFRP-steel laminates
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Boose, YannickYannick.boose (at) dlr.deUNSPECIFIED
Kappel, ErikErik.Kappel (at) dlr.dehttps://orcid.org/0000-0002-8760-8451
Stefaniak, DanielDaniel.Stefaniak (at) dlr.dehttps://orcid.org/0000-0001-8192-7454
Prussak, RobertRobert.Prussak (at) dlr.deUNSPECIFIED
Pototzky, AlexanderAlexander.Pototzky (at) dlr.deUNSPECIFIED
Weiß, LennartLennart.Weiss (at) dlr.deUNSPECIFIED
Date:12 August 2020
Journal or Publication Title:International Journal of Crashworthiness
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:Yes
DOI :10.1080/13588265.2020.1787681
Publisher:Taylor & Francis
Keywords:rash; hybrid laminate; FML; energy absorption; SEA; CFRP; steel
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:Road Transport
DLR - Research area:Transport
DLR - Program:V ST Straßenverkehr
DLR - Research theme (Project):V - NGC Fahrzeugstruktur II
Location: Braunschweig
Institutes and Institutions:Institute of Composite Structures and Adaptive Systems > Functional Lightweight Structures
Deposited By: Kappel, Dr.-Ing. Erik
Deposited On:30 Nov 2020 06:17
Last Modified:30 Nov 2020 06:17

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