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

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.

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    • © 2020 Informa UK Limited, trading as Taylor & Francis Group. Abstract reprinted with permission of Taylor & Francis.
  • Authors:
    • Boose, Y
    • Kappel, E
    • Stefaniak, D
    • Prussak, R
    • Pototzky, A
    • Weiß, L
  • Publication Date: 2022-1

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  • English

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  • Accession Number: 01836413
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Feb 23 2022 4:12PM