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Concept Study on Optimized Auxiliary Material Designs and Application Techniques for Vacuum Bagging of Full-Scale CFRP Rocket Boosters

Faber, Jan and Schmidt-Eisenlohr, Clemens and Dickhut, Tobias and Ortmann, Peter (2018) Concept Study on Optimized Auxiliary Material Designs and Application Techniques for Vacuum Bagging of Full-Scale CFRP Rocket Boosters. ECCM18, 25.-18. Jun. 2018, Athen, Griechenland.

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Abstract

Rising production rates in CFRP aerospace manufacturing cause a growing need for effectivity, reproducibility and enhanced quality standards. State of the art vacuum bagging for vacuum infusion technologies still involves a high amount of manual process steps. More efficient production technologies could increase the economic attractiveness of vacuum infusion processes for large aerospace structures. In the context of a research project, the German Aerospace Center (DLR), Augsburg and MT Aerospace GmbH, Augsburg develop design methods and application concepts for vacuum bagging on a full-scale CFRP rocket booster case. With a diameter of 3.4 m manual application of auxiliary materials is challenging in terms of deposition accuracy, reproducibility and reachability. Facing these challenges, a design method has been developed to generate near net-shape auxiliary materials with reduced wrinkling. As joining technology for auxiliary material packages, continuous ultrasonic welding has been selected and validated based on the suitability for vacuum infusion and out-of-autoclave curing. Manual application tests were conducted on a full-scale booster case demonstrator. The results show, that a developable shape design of the packages for the doubly curved dome sections allows best results with regards to wrinkle minimization and the complexity of the handling procedure.

Item URL in elib:https://elib.dlr.de/120813/
Document Type:Conference or Workshop Item (Speech)
Title:Concept Study on Optimized Auxiliary Material Designs and Application Techniques for Vacuum Bagging of Full-Scale CFRP Rocket Boosters
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Faber, Janjan.faber (at) dlr.dehttps://orcid.org/0000-0002-6810-6982
Schmidt-Eisenlohr, Clemensclemens.schmidt-eisenlohr (at) dlr.deUNSPECIFIED
Dickhut, Tobiastobias.dickhut (at) mt-aerospace.deUNSPECIFIED
Ortmann, Peterpeter.ortmann (at) mt-aerospace.deUNSPECIFIED
Date:2018
Refereed publication:Yes
Open Access:No
In DOAJ:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:CFRP rocket booster case, vacuum bagging, ultrasonic welding, 3D shape design
Event Title:ECCM18
Event Location:Athen, Griechenland
Event Type:international Conference
Event Dates:25.-18. Jun. 2018
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: Augsburg
Institutes and Institutions:Institute of Structures and Design > Automation and Production Technology
Deposited By: Faber, Jan
Deposited On:13 Dec 2018 11:51
Last Modified:13 Dec 2018 11:51

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