elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Privacy Policy | Contact | Deutsch
Fontsize: [-] Text [+]

Identification and quantitation of processing parameters controlling the surface quality of carbon fibre reinforced composites.

Mahrholz, Thorsten and Kunze, Johannes and Sinapius, Michael (2016) Identification and quantitation of processing parameters controlling the surface quality of carbon fibre reinforced composites. Journal of Reinforced Plastics and Composites, 35 (8), pp. 638-654. SAGE Publications. doi: 10.1177/0731684415626803. ISSN 0731-6844.

Full text not available from this repository.

Abstract

The paper investigates the effect of essential manufacturing parameters on the surface quality of uncoated carbon fibre reinforced composites (CFRP) used as car body panels with visible sur-faces (Class A properties). A series of CFRP laminates were prepared by the RTM technique varying the fibre volume content (30 to 60 %), reinforcement material (woven fabrics vs. unidirectional fibre reinforcements), curing temperatures (40°C to 120°C), additives (SiO2 nanoparticles as matrix fillers) and using a surface finish applied as an in-mould coating. Laminate surfaces were characterized by roughness analysis (white-light interferometry) and wave-scan measurement to quantify the influence of the different manufacturing parameters on the surface quality. Especially the used resins were intensively characterized concerning thermal properties (CTE) and total resin shrinkage. These results correlate very well with the performed analysis of surface roughness. It is found that the fibre print through effect is significantly reduced by realising low total resin shrinkage and an even distribution of resin and fibres at the surface. Thus, using of unidirectional fibre reinforcement (no weft or sewing threads; very fine filaments), low curing temperatures (slow curing processes) and an in-mould coating are most successful for reduction of fibre print through effect and getting surface similar to Class A properties. In addition, the surface quality is quite positively affected by the application of nanoparticles and also strongly controlled by roughness of tooling.

Item URL in elib:https://elib.dlr.de/102146/
Document Type:Article
Title:Identification and quantitation of processing parameters controlling the surface quality of carbon fibre reinforced composites.
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Mahrholz, ThorstenThorsten.Mahrholz (at) dlr.deUNSPECIFIED
Kunze, Johannesjohannes.kunze (at) dlr.deUNSPECIFIED
Sinapius, Michaelmichael.sinapius (at) dlr.deUNSPECIFIED
Date:2016
Journal or Publication Title:Journal of Reinforced Plastics and Composites
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:35
DOI :10.1177/0731684415626803
Page Range:pp. 638-654
Editors:
EditorsEmailEditor's ORCID iD
Springer, Georgegspringer@stanford.eduUNSPECIFIED
Publisher:SAGE Publications
ISSN:0731-6844
Status:Published
Keywords:Laminate, Cure behaviour, Surface analysis, Resin transfer moulding (RTM); Class A; fibre print through; resin shrinkage; nanoparticles
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 Fahrzeugkonzepte (old)
Location: Braunschweig
Institutes and Institutions:Institute of Composite Structures and Adaptive Systems > Multifunctional Materials
Deposited By: Mahrholz, Dr.rer.nat. Thorsten
Deposited On:13 Jun 2016 08:01
Last Modified:08 Mar 2018 18:38

Repository Staff Only: item control page

Browse
Search
Help & Contact
Information
electronic library is running on EPrints 3.3.12
Copyright © 2008-2017 German Aerospace Center (DLR). All rights reserved.