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Innovative load application into oscillation-loaded fibre-reinforced plastic structures

Sikora, Sebastian P. and Wagner, Sebastian and Galkin, Siegfried and Kopp, Gundolf (2017) Innovative load application into oscillation-loaded fibre-reinforced plastic structures. Frontiers in Materials Processing Applications, Research and Technology (FiMPART 2017), 9.-12. Juli 2017, Bordeaux, Frankreich.

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Abstract

In different industries, the amount of used fibre-reinforced plastics (FRP) is increasing. For these materials, thermal joining technologies such as welding cannot be used. Therefore, a demand for innovative joining methods arises. Under load a complex stress distribution and stress peaks become apparent in FRP joints. Two different approaches to handle such peaks are investigated. The first approach uses adhesive bonding with an epoxy adhesive. To reduce the emerging stress peaks, an elastomer layer is locally introduced into the laminate that is to be joined. The second approach is the application of multi-loop carbon roving rosettes to reinforce bolt-loaded open-hole laminates. These multi-loop rovings consist of turns around the hole and free slings in the design area around the hole; they are applied onto the laminate. To experimentally determine the impact of the elastomer as well as the rosette application, quasi-static as well as fatigue tests have been conducted. On this basis, characteristics of the new approaches are compared to reference joints. For local elastomer integration, experiments show that for joints of carbon FRP with aluminium the bearable load cycle number is raised. The rosettes significantly increase local bearing capacity. To underline the potentials for industrial application, investigations concerning automation to manufacture these joints are presented.

Item URL in elib:https://elib.dlr.de/113395/
Document Type:Conference or Workshop Item (Speech)
Title:Innovative load application into oscillation-loaded fibre-reinforced plastic structures
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Sikora, Sebastian P.sebastian.sikora (at) dlr.deUNSPECIFIED
Wagner, SebastianNMIUNSPECIFIED
Galkin, SiegfriedKITUNSPECIFIED
Kopp, Gundolfgundolf.kopp (at) dlr.deUNSPECIFIED
Date:July 2017
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:multi-material joint, adhesive bond, Tailored Fibre Placement (TFP), bolt, mechanical behaviour
Event Title:Frontiers in Materials Processing Applications, Research and Technology (FiMPART 2017)
Event Location:Bordeaux, Frankreich
Event Type:international Conference
Event Dates:9.-12. Juli 2017
Organizer:Endorsed by Materials Research Society (MRS), Singapore
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: Stuttgart
Institutes and Institutions:Institute of Vehicle Concepts > Material and Process Applications for Road and Rail Vehicles
Deposited By: Sikora, Sebastian
Deposited On:18 Oct 2017 09:51
Last Modified:09 Jan 2018 15:50

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