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network, the Premium AEROTEC plant in Augsburg is equipped with equally sophisticated high-performance
milling machines, used for instance to produce titanium components for the central fuselage section of the Eurofighter.
The Varel plant manufactures ma-chined parts (air intake shells and ducts) for the Eurofighter.
Most of the machined parts are typically made from aluminium wrought alloys with a good machinability behaviour.
High end machines can run carbide tools at very high rotational speeds and feeds. Linear driven axis
and direct drives are used to enable these HPC-processes also for small complex components. In the large part
manufac-turing a so called tripod technology at the support of the spindle allows for a simulta-neously highly
dynamic 5-axis machining. For complex rotational parts like trunnions etc. turning milling machine tools are
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used for a complete machining of these parts on only one machine tool.
The A350 and the composite materials lead to an increasing trend of titanium com-ponents due to a better
corrosion and mechanical compatibility to composites in comparison to aluminium. The Varel plant machined
the first titanium door frames measuring a length up to 4.2m. As raw material Varel uses hand forgings until the
ramp up of the A350 production when die forgings are planned as raw material. Due to the difficult machining
behaviour of titanium in comparison to aluminium the tita-nium door frame machining is a huge challenge. The
pockets can be milled with solid carbide tools at high material removal rates.
Title: Laser joining of fibre reinforced composites
Authors: D. Herzog, P. Jaeschke, H. Haferkamp, C. Peters, H. Purol, A. Herrmann
LZH, FIBRE
Time: November 5, 2009 10:20 am
Room: Candela
Thermoplastic matrix composites are of rising interest due to their superior producability and formability. One
major advantage over epoxy based composites is their weldability. Therefore, it is necessary to make use of
this advantage through application of flexible, reliable welding processes with a high automation potential that
can fulfill the requirements of future high volume productions.
Laser transmission welding is an industrially established joining method for unreinforced polymers. It was first
presented as a potential joining technology involving continuous fibre composites by the authors in /1/, where
high performance polymers such as polyphenylene sulfide (PPS) have been welded to an absorbing joining
partner with a carbon fibre reinforcement. It has been shown that the absorption of the laser radiation takes
place within the carbon fibres and heat conduction leads to the desired joining zone between the materials in
an overlap position.
In this paper, the behaviour of carbon fibre composites as laser absorbing joining partners is further studied.
For detection of the heat distribution during laser irradiation of a carbon fibre composite in dependence of
the relative position, a pyrometer is used. The temperature signal allows for identification of the position of the
laser on the composite with respect to the fibre orientation. In a second step, a closed loop control can be realized,
adapting the laser power and homogenizing the weld seam in the otherwise inhomogenous, anisotropic
material. Using this technology, a method is presented to weld carbon fibre composites to carbon fibre composites,
using a third, laser transparent joining partner for the connection.
SESSION C2A AEROSPACE SUPPLY CHAIN
Chair: Dr Trevor Young (University of Limerick)
Title: Supply Chain Excellence with SCOR
Authors: M. Huber, Dr M. Rübartsch
P3 Ingenieurgesellschaft
Time: November 5, 2009 11:30 am
Room: Lumen
This abstract provides a principal description of the Supply Chain Operations Reference (SCOR) model and an
overview how to achieve based on this methodology Supply Chain Excellence.
Main Topic of SCOR: A Process Framework
- Process frameworks deliver the well-known concepts of business process reengineering, benchmarking, and
best practices into a cross-functional framework
- Standard processes (Plan, Source, Make, Deliver, Return, Enable), standard metrics (Perfect Delivery, Cash
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Cycle Time, Supply-Chain Cost …), standard practices (EDI, CPFR, Cross-Training …) and pre-defined relationships
between processes metrics and practices.
How SCOR impacts a company
When we solve business problems – which is what SCOR is all about – there are generally three main techniques:
1. One is to look at business processes, business activities in detail, mapping them, and seeing ‘if they make
sense’, when we measure them to see if they are working the right way.
2. Second is to compare our company to others, at all levels and benchmarking measures by selecting the
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