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Quality Controlled Continuously Formed NCF-Preforms

Stahl, Arne and Borgwardt, Henrik (2014) Quality Controlled Continuously Formed NCF-Preforms. In: International Sampe Conference Seattle 2014 proceedings. Sampe Seattle, 03.-05. Juni 2014, Seattle.

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Environmental and economic requirements call for lightweight aircraft design and for cost efficient manufacturing processes. Lightweight design can be reached by the use of composite materials, which have low specific weight. Carbon fiber reinforced polymers (CFRP) are especially suited for air frame production. Full exploitation of the composite’s potential requires a specialized design. One aspect of such a design is a fiber orientation that accounts for the dimensioning load case. Regarding cost efficient manufacturing processes, resin transfer moulding (RTM) using low-cost non-crimp fabrics (NCF) is a very promising option. The preforming process is crucial for optimal and reproducible mechanical properties. Using a fuselage frame as an example, a novel approach of roll forming NCF into a complex curved profile is presented. The patented continuously working principle allows for accurate fiber orientation along the preform and offers a fast and flexible alternative to processes based on solid preform-tools. Automation not only provides cost-efficient processes but also leads to reproducible accuracies. Accompanied by an online quality assurance system that consistently measures the fiber orientation of each layer, the process meets high quality requirements. Inspecting all layers of a stacking enables a complete quality check in the preforming process.

Item URL in elib:https://elib.dlr.de/92682/
Document Type:Conference or Workshop Item (Speech)
Title:Quality Controlled Continuously Formed NCF-Preforms
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Stahl, ArneArne.Stahl (at) DLR.deUNSPECIFIED
Borgwardt, Henrikhenrik.borgwardt (at) dlr.deUNSPECIFIED
Date:5 June 2014
Journal or Publication Title:International Sampe Conference Seattle 2014 proceedings
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
Keywords:continuous preforming composite manufacturing automation dry fiber non-crimp fabric
Event Title:Sampe Seattle
Event Location:Seattle
Event Type:international Conference
Event Dates:03.-05. Juni 2014
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: Braunschweig
Institutes and Institutions:Institute of Composite Structures and Adaptive Systems > Functional Lightweight Structures
Deposited By: Stahl, Arne
Deposited On:31 Mar 2015 13:49
Last Modified:31 Jul 2019 19:49

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