JEC COMPOSITES MAGAZINE - Issue #94 - January/February 2015 - 45

More information:
www.kunststofftechnik.at/verbundwerkstoffe
Contact: christian.schillfahrt@unileoben.ac.at
Acknowledgements
This work is presented within the "ILMAS - Implementation
of the Liquid Infusion for Manufacturing of Aerospace Structures" project funded under the European Community's Seventh
Framework Programme (FP7/2007-2013) for the Clean Sky
Joint Technology Initiative under grant agreement no.: CSJUGAP-338413, which is greatly acknowledged.

Fig. 4: BraF process chain (source: Airbus Group Innovations)

min) [3]. Depending on the desired cross-sectional geometry,
further processing steps are needed, including cutting, draping
and binder fixation, that influence the overall efficiency of this
approach. To enhance mechanical properties, the process uses
uniaxial braiding to reduce fibre undulation, although this
lowers process efficiency as an additional braiding machine is
needed to produce the second braided fibre direction. Further
drawbacks are the laborious spool mounting of the braiding
machines, combined with a low spool capacity, and the high
effort required to convert this setup when changing preform
layup and geometry.

Conclusion
Various approaches for the automated manufacturing of profile preforms have been discussed and evaluated with respect
to selected process requirements, manufacturing parameters
and economic aspects. Comparing these different techniques,
the two continuous profile preforming concepts seem to be
the most suitable solutions to fulfil the given requirements.
They come along with the highest degree of efficiency as they
represent a clearly continuous way of preform manufacturing and show high flexibility in terms of layup, profile crosssection and curvature. Moreover, from an economic point of
view, these approaches are advantageous with regard to the
relatively low investment costs. n

References
[1]
Soutis C. "Carbon fiber reinforced plastics in aircraft
construction". Materials Science and Engineering: A 2005, 412(12), 171-176.
[2]
Mahfuz H., Majumdar P., Saha M., Shamery F., Jeelani
S. "Integral Manufacturing of Composite Skin-Stringer Assembly and Their Stability Analyses". Applied Composite Materials
2004, 11(3), 155-171.
[3]
Geßler A. "Textile Technologies and Preform Manufacturing for Advanced Composites". In: Proceedings of Swiss
SAMPE Technical Conference, Zurich, Switzerland, 2011.
[4]
Engelhardt R., Hörmann P., Rinker F., Weyerer G.,
Drechsler K., Hirschvogel M. "Analysis of the Cost Efficiency of
Automated Fiber Placement based on an Extensive Process
Breakdown". In: Proceedings of SEICO 14 - 35th International
Technical Conference & Forum, Paris, France, 2014.
[5]
Reinhold R., Mehlenhoff T. "Continuous Preforming
System for Curved Composite Profiles". SAE International Journal of Aerospace 2011, 4(2), 681-689.
[6]
Grieser T., Rieber G., Mitschang P. "Production of Continuously Formed High Performance Preforms for FRPC Profiles".
In: Proceedings of 15th European Conference on Composite
Materials, Venice, Italy, 2012.
[7]
Apmann H. "Automatische Handhabung von CFRPMaterial für Spante und Stringer". In: Proceedings of DLR
Bauweisen Kolloquium, Stuttgart, Germany, 2009.
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Brandt J., Drechsler K., Geßler A. "Comparison of
Various Braiding Technologies for Composite Materials in Aerospace Applications", Warrendale, PA: SAE International, 2001.

No94 January - February 2015 /

jec composites magazine 45


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JEC COMPOSITES MAGAZINE - Issue #94 - January/February 2015

Table of Contents for the Digital Edition of JEC COMPOSITES MAGAZINE - Issue #94 - January/February 2015

Cover
Edito
Point of view: Raw materials
Contents
Companies & Business
In brief
Resins - lnterview
Agenda of Events
Applications
Aerospace
Defense
Sustainability
Market
Overview 2014
China - Interview
FEATURE CARBON
Carbon
Training
Investment - Interview
Simulation
CFRT
Nano
Equipment
Marine
Research & Development
Monitoring
LCM
Technology & Innovations
Manufacturing
Pultrusion
NDT
Matrix
Simulation
Index
In the world
JEC COMPOSITES MAGAZINE - Issue #94 - January/February 2015 - Cover
JEC COMPOSITES MAGAZINE - Issue #94 - January/February 2015 - 2
JEC COMPOSITES MAGAZINE - Issue #94 - January/February 2015 - Edito
JEC COMPOSITES MAGAZINE - Issue #94 - January/February 2015 - Point of view: Raw materials
JEC COMPOSITES MAGAZINE - Issue #94 - January/February 2015 - 5
JEC COMPOSITES MAGAZINE - Issue #94 - January/February 2015 - Contents
JEC COMPOSITES MAGAZINE - Issue #94 - January/February 2015 - 7
JEC COMPOSITES MAGAZINE - Issue #94 - January/February 2015 - In brief
JEC COMPOSITES MAGAZINE - Issue #94 - January/February 2015 - 9
JEC COMPOSITES MAGAZINE - Issue #94 - January/February 2015 - 10
JEC COMPOSITES MAGAZINE - Issue #94 - January/February 2015 - Resins - lnterview
JEC COMPOSITES MAGAZINE - Issue #94 - January/February 2015 - 12
JEC COMPOSITES MAGAZINE - Issue #94 - January/February 2015 - 13
JEC COMPOSITES MAGAZINE - Issue #94 - January/February 2015 - 14
JEC COMPOSITES MAGAZINE - Issue #94 - January/February 2015 - Agenda of Events
JEC COMPOSITES MAGAZINE - Issue #94 - January/February 2015 - Ad1
JEC COMPOSITES MAGAZINE - Issue #94 - January/February 2015 - Ad2
JEC COMPOSITES MAGAZINE - Issue #94 - January/February 2015 - Aerospace
JEC COMPOSITES MAGAZINE - Issue #94 - January/February 2015 - 17
JEC COMPOSITES MAGAZINE - Issue #94 - January/February 2015 - Defense
JEC COMPOSITES MAGAZINE - Issue #94 - January/February 2015 - Sustainability
JEC COMPOSITES MAGAZINE - Issue #94 - January/February 2015 - Overview 2014
JEC COMPOSITES MAGAZINE - Issue #94 - January/February 2015 - 21
JEC COMPOSITES MAGAZINE - Issue #94 - January/February 2015 - China - Interview
JEC COMPOSITES MAGAZINE - Issue #94 - January/February 2015 - 23
JEC COMPOSITES MAGAZINE - Issue #94 - January/February 2015 - Carbon
JEC COMPOSITES MAGAZINE - Issue #94 - January/February 2015 - 25
JEC COMPOSITES MAGAZINE - Issue #94 - January/February 2015 - Training
JEC COMPOSITES MAGAZINE - Issue #94 - January/February 2015 - Investment - Interview
JEC COMPOSITES MAGAZINE - Issue #94 - January/February 2015 - 28
JEC COMPOSITES MAGAZINE - Issue #94 - January/February 2015 - Simulation
JEC COMPOSITES MAGAZINE - Issue #94 - January/February 2015 - 30
JEC COMPOSITES MAGAZINE - Issue #94 - January/February 2015 - 31
JEC COMPOSITES MAGAZINE - Issue #94 - January/February 2015 - CFRT
JEC COMPOSITES MAGAZINE - Issue #94 - January/February 2015 - 33
JEC COMPOSITES MAGAZINE - Issue #94 - January/February 2015 - Nano
JEC COMPOSITES MAGAZINE - Issue #94 - January/February 2015 - 35
JEC COMPOSITES MAGAZINE - Issue #94 - January/February 2015 - 36
JEC COMPOSITES MAGAZINE - Issue #94 - January/February 2015 - Equipment
JEC COMPOSITES MAGAZINE - Issue #94 - January/February 2015 - Marine
JEC COMPOSITES MAGAZINE - Issue #94 - January/February 2015 - 39
JEC COMPOSITES MAGAZINE - Issue #94 - January/February 2015 - Monitoring
JEC COMPOSITES MAGAZINE - Issue #94 - January/February 2015 - 41
JEC COMPOSITES MAGAZINE - Issue #94 - January/February 2015 - 42
JEC COMPOSITES MAGAZINE - Issue #94 - January/February 2015 - LCM
JEC COMPOSITES MAGAZINE - Issue #94 - January/February 2015 - 44
JEC COMPOSITES MAGAZINE - Issue #94 - January/February 2015 - 45
JEC COMPOSITES MAGAZINE - Issue #94 - January/February 2015 - Manufacturing
JEC COMPOSITES MAGAZINE - Issue #94 - January/February 2015 - 47
JEC COMPOSITES MAGAZINE - Issue #94 - January/February 2015 - Pultrusion
JEC COMPOSITES MAGAZINE - Issue #94 - January/February 2015 - 49
JEC COMPOSITES MAGAZINE - Issue #94 - January/February 2015 - NDT
JEC COMPOSITES MAGAZINE - Issue #94 - January/February 2015 - Matrix
JEC COMPOSITES MAGAZINE - Issue #94 - January/February 2015 - 52
JEC COMPOSITES MAGAZINE - Issue #94 - January/February 2015 - 53
JEC COMPOSITES MAGAZINE - Issue #94 - January/February 2015 - Simulation
JEC COMPOSITES MAGAZINE - Issue #94 - January/February 2015 - 55
JEC COMPOSITES MAGAZINE - Issue #94 - January/February 2015 - 56
JEC COMPOSITES MAGAZINE - Issue #94 - January/February 2015 - Index
JEC COMPOSITES MAGAZINE - Issue #94 - January/February 2015 - In the world
JEC COMPOSITES MAGAZINE - Issue #94 - January/February 2015 - 59
JEC COMPOSITES MAGAZINE - Issue #94 - January/February 2015 - 60
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