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Experimental and numerical multiscale approach to thermally cycled FRP

Lüders, Caroline and Kalinka, Gerhard and Li, Wei and Wille, Tobias and Sinapius, Michael (2020) Experimental and numerical multiscale approach to thermally cycled FRP. Composite Structures, 244. Elsevier. DOI: 10.1016/j.compstruct.2020.112303 ISSN 0263-8223

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Official URL: https://www.sciencedirect.com/science/article/pii/S0263822319332866


Due to the different thermal expansion of the constituent materials, cyclic thermal loading of FRP induces alternating stresses in the material at two scales: at the micro scale (level of fibre-matrix-interaction) and at the macro scale (level of the multidirectional laminate). Especially the micro scale effect is not comprehensively investigated yet. Additionally, computational investigations mostly neglect this effect due to the homogenous modelling of the composite material. As this effect is assumed to significantly contribute to the fatigue of FRP at thermal loads, the present paper suggests an experimental and numerical multiscale approach including experiments at the different involved material scales to separately observe the effects acting at these scales. The approach also includes numerical modelling for each scale to complement the knowledge gained from the experiments and to create a basis for the consideration of the micro effect even in macroscopic fatigue models treating homogeneous modelled composites. The main focus of the contribution is to bring the overall approach up for discussion, rather than to present the multiscale modelling details.

Item URL in elib:https://elib.dlr.de/134997/
Document Type:Article
Title:Experimental and numerical multiscale approach to thermally cycled FRP
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Lüders, Carolinecaroline.lueders (at) dlr.dehttps://orcid.org/0000-0002-9661-7819
Kalinka, Gerhardgerhard.kalinka (at) bam.deUNSPECIFIED
Li, Weiwei.li (at) bam.deUNSPECIFIED
Wille, TobiasTobias.Wille (at) dlr.deUNSPECIFIED
Sinapius, MichaelMichael.Sinapius (at) dlr.deUNSPECIFIED
Date:29 March 2020
Journal or Publication Title:Composite Structures
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
DOI :10.1016/j.compstruct.2020.112303
Keywords:Fatigue Thermal cycling Fibre-reinforced plastics Microscale Macroscale Cryogenic Carbon fibre Epoxy resin
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:Rail Transport
DLR - Research area:Transport
DLR - Program:V SC Schienenverkehr
DLR - Research theme (Project):V - NGT BIT
Location: Braunschweig
Institutes and Institutions:Institute of Composite Structures and Adaptive Systems
Deposited By: Wolff, Caroline
Deposited On:25 May 2020 08:11
Last Modified:25 May 2020 08:11

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