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Investigation of fast curing epoxy resins regarding process induced distortions of fbre reinforced composites

Groh, Fabian and Kappel, Erik and Hühne, Christian and Brymerski, Wojciech (2019) Investigation of fast curing epoxy resins regarding process induced distortions of fbre reinforced composites. Composite Structures, pp. 923-934. Elsevier. doi: 10.1016/j.compstruct.2018.09.003. ISSN 0263-8223.

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Official URL: http://www.elsevier.com/locate/compstruct


Unavoidable deformations occur during part production due to the non-isotropic nature of carbon fbre reinforced plastics (CFRP). These deformations often lead to dissatisfaction of tolerances or result in cost and time intensive rework of the tooling. In a cost driven production environment, similar to the automotive industry, it is essential to predict the deformations early on in the part development process in order to compensate toolings accordingly. In future applications, Fast Curing Epoxy Resins (FCER), with curing times of less than 20 min, will play a key role in high rate CFRP-production at low cost. The present paper reports on a comprehensive experimental study on different FCER systems. It includes the thermo-chemical characterization of neat resin samples as well as the quantifcation of spring-in deformations of L-profles. Essential part and processing parameters, as the lay-up, the curing temperature, the cooling rate and the fbre volume fraction are varied and their effect on process induced deformations is quantifed. Results for FCER system are compared to slower curing systems to assess differences

Item URL in elib:https://elib.dlr.de/125054/
Document Type:Article
Title:Investigation of fast curing epoxy resins regarding process induced distortions of fbre reinforced composites
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Groh, Fabianfabian.gro (at) audi.deUNSPECIFIED
Kappel, Erikerik.kappel (at) dlr.dehttps://orcid.org/0000-0002-8760-8451
Hühne, Christianchristian.huehne (at) dlr.dehttps://orcid.org/0000-0002-2218-1223
Brymerski, Wojciechwojciech.brymerski (at) audi.deUNSPECIFIED
Date:1 January 2019
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.2018.09.003
Page Range:pp. 923-934
EditorsEmailEditor's ORCID iD
Keywords:Automotive Composites Fast curing epoxy resins Process induced deformations Shape distortion Spring-in Part distortion CFRP manufacturing
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:Terrestrial Vehicles (old)
DLR - Research area:Transport
DLR - Program:V BF - Bodengebundene Fahrzeuge
DLR - Research theme (Project):V - NGC Fahrzeugstruktur (old)
Location: Braunschweig
Institutes and Institutions:Institute of Composite Structures and Adaptive Systems > Functional Lightweight Structures
Deposited By: Kappel, Dr.-Ing. Erik
Deposited On:14 Dec 2018 07:59
Last Modified:07 Mar 2019 06:50

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