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Characterization of the corrosion influence on the fatigue behaviour of intrinsic CFRP-steel hybrids

Klein, Martin and Hülsbusch, Daniel and Walther, Frank and Bartsch, Marion and Hausmann, Joachim and Frantz, Meike and Lauter, Christian and Tröster, Thomas (2014) Characterization of the corrosion influence on the fatigue behaviour of intrinsic CFRP-steel hybrids. In: Euro Hybrid 2014, pp. 101-108. Euro Hybrid Materials and Structures 2014, 10.-11. April 2014, Stade, Grmany. ISBN ISBN 978-3-88355-402-0.

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Abstract

Hybrid structures provide the opportunity to design load-adapted components by complete or local CFRP strengthening and offer a high potential for lightweight construction. Such components are exposed to mechanical and environmental loads under service conditions, e.g. in automotive applications. In the present study the influence of a pre-corrosive deterioration and in-situ salt spray load on the fatigue behavior of two intrinsically produced hybrid structures with different steel constituents was investigated using in-situ strain and temperature measurements in order to obtain a precise description and prospective prediction. The corrosion behavior was characterized in potentiodynamic polarization measurements and afterwards correlated with the fatigue results, yielding a process-structure-property relationship of the corrosion influence on the fatigue performance. Both hybrid structures exhibited galvanic corrosion, yet one material combination showed significantly higher corrosion rates leading to a worse fatigue behavior observed in single step tests with pre-corroded specimens and in corrosion fatigue tests in salt spray environment. Light microscopy investigations were performed to describe macroscopic mechanical-chemical properties on microstructure basis.

Document Type:Conference or Workshop Item (Speech)
Title:Characterization of the corrosion influence on the fatigue behaviour of intrinsic CFRP-steel hybrids
Authors:
AuthorsInstitution or Email of Authors
Klein, MartinTechnische Universität Dortmund
Hülsbusch, DanielTechnische Universität Dortmund
Walther, FrankTechnische Universität Dortmund
Bartsch, Marionmarion.bartsch@dlr.de
Hausmann, Joachimjoachim.hausmann@dlr.de
Frantz, MeikeUniversität Paderborn
Lauter, ChristianUniversität Paderborn
Tröster, ThomasUniversität Paderborn
Date:April 2014
Journal or Publication Title:Euro Hybrid 2014
Refereed publication:No
In ISI Web of Science:No
Page Range:pp. 101-108
ISBN:ISBN 978-3-88355-402-0
Status:Published
Keywords:intrinsic hybrid structures, fatigue, load increase test, corrosion, potentiodynamic polarization
Event Title:Euro Hybrid Materials and Structures 2014
Event Location:Stade, Grmany
Event Type:international Conference
Event Dates:10.-11. April 2014
Organizer:Deutsche Gesellschaft für Materialkunde e.V.
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:Aircraft Research
DLR - Research theme (Project):Structures and Materials
Location: Köln-Porz
Institutes and Institutions:Institute of Materials Research > Experimental and Numerical Methods
Deposited By: Dr.-Ing. Marion Bartsch
Deposited On:10 Jul 2014 09:28
Last Modified:10 Jul 2014 09:28

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