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

Influence of Process Parameters and Material Aging on the Adhesion of Prepreg in AFP Processes

Nguyen, Duy Chinh and Krombholz, Christian (2016) Influence of Process Parameters and Material Aging on the Adhesion of Prepreg in AFP Processes. ECCM17, 26.-30. Jun. 2016, München, Deutschland.

[img] PDF
272kB

Abstract

In order to increase the quality of CFRP parts, the manufacturing process could be customized to the current condition of the used prepreg material. For that reason, a long term experiment was executed here, where the change of the tack due to material aging at room temperature and variation of material temperature was analyzed. With the existing requirements, among other things, to simulate a real automated fiber placement (AFP) process, a lap shear test was found to be appropriate to measure the tack between two prepreg plies. First results show, that the tack increases dramatically if the temperature of the material also increases. Regarding material aging at room temperature, without heating the material, the tack was constant for a long time and then started to decrease. If the material was heated during the automated layup, the tack did not decrease but surprisingly increased constantly for more than ten days, before it started to decrease. This unexpected behavior could result from the increasing degree of cure which leads to an increase of the viscosity of the resin.

Item URL in elib:https://elib.dlr.de/106624/
Document Type:Conference or Workshop Item (Poster)
Title:Influence of Process Parameters and Material Aging on the Adhesion of Prepreg in AFP Processes
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Nguyen, Duy ChinhChinh.Nguyen (at) dlr.deUNSPECIFIED
Krombholz, ChristianChristian.Krombholz (at) dlr.dehttps://orcid.org/0000-0002-1802-4110
Date:2016
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:automated fiber placement, AFP, prepreg, tack, lap shear test
Event Title:ECCM17
Event Location:München, Deutschland
Event Type:international Conference
Event Dates:26.-30. Jun. 2016
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Structures and Materials
Location: Stade
Institutes and Institutions:Institute of Composite Structures and Adaptive Systems
Deposited By: Nguyen, Duy Chinh
Deposited On:10 Nov 2016 23:58
Last Modified:31 Jul 2019 20:04

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.