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Research approach
A survey was conducted involving 30 aerospace companies in the target region to identify supplier capabilities,
supplier tiers and relationships between various tiers. A comprehensive survey questionnaire comprising indepth
qualitative and quantitative questions was used to identify gaps in the existing structure and recommend
a new pragmatic tiering structure. The sample covered approximately 50 per cent of the aerospace industry in
the region in terms of turnover and number of employees (excluding the OEMs).
Findings and originality
A supplier tiering structure will be presented based on each company’s core capabilities. The proposed tiering
structure will be useful for all the stakeholders (OEMs, policy makers, funding bodies and suppliers) of the
aerospace industry. It will give a pragmatic view to identify the region’s strengths and weaknesses and help
determine joint strategy development by these stakeholders. It will, also, be used by OEMs to identify suppliers
with the required capabilities and as a guide in a supplier rationalisation exercise. This will add to the theory
of tiering based approach to supplier rationalisation where there is a dearth of research.
Practical impact
The development of the tiering structure will help the industry in its supplier rationalisation exercise. It will also
help the industry to understand the issues and challenges for supplier collaboration between various tiers. As
the tiering structure is based on the capabilities of companies, it will help to identify capability gaps and assist
in the subsequent understanding of the competitiveness of the region and help direct future improvements.
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SESSION C1B COMPOSITE STRUCTURES
Chair: Prof. G.Frulla (Politecnico di Torino)
Title: Some aspects of design and use of smart composite structure
Authors: Prof. B. Surowska, Prof. J. Warminski, Dr H. Debski
Lublin University of Technology
Time: November 5, 2009 9:40 am
Room: Candela
Smart structures are important because of their: relevance to hazard mitigation, structural vibration control,
structural health monitoring, transportation engineering, thermal control and energy saving. Smart materials or
structures have embedded sensors to monitor their own state as well as environmental stimuli. They have the
ability to perform both sensing and actuating functions which sense a change in the environment and responds
by altering one or more of its property coefficients. It is possible to realize the passive or active constructions.
In passive construction (intrinsically-smart) the symmetry and balance of the composite filament plies controls
the elastic deformation response to loading of the composite structure. Intrinsically smart structural composites
can perform functions such as: sensing strain, stress, damage or temperature, thermoelectric energy generation,
EMI shielding, electric current rectification, vibration reduction. They have been attained in polymer-matrix
composites with continuous carbon, polymer, or glass fibers. Continuous carbon fiber epoxy-matrix composites
provide temperature sensing by acting as thermistors and thermocouples. Self-monitoring of damage (whether
due to stress or temperature, under static or dynamic conditions) has been achieved as the electrical resistance
of the composite changes with damage. Self-monitoring of strain (reversible) has been achieved in carbon fiber
epoxy matrix composites without the use of embedded or attached sensors, as the electrical resistance of the
composite in the through-thickness or longitudinal direction changes reversibly with longitudinal strain because
of alterations in the degree of fiber alignment.
The design of glass fiber epoxy matrix composite with embedded sensors and carbon fiber epoxy matrix composite
without sensors for self-monitoring of strain are presented as the first step of smart structure production.
…
Title: High Performance Cutting of Aluminium and Titanium Parts for Aircrafts
Authors: Dr M. Lange
Premium Aerotec GmbH
Time: November 5, 2009 10:00 am
Room: Candela
Machined parts made from plate material, forgings or castings are widely spread in all aircrafts especially as
structural components. High performance cutting processes lead to a high level of flexibility and efficiency needed
due to the highly competitive market. As a first tier supplier of Airbus the Premium Aerotec GmbH delivers
more than 3 million machined parts per year for further assembling.
One particularly demanding activity conducted at the Varel parts manufacturing facil-ity is the 5-axis highperformance
cutting of milled aluminium integral components. In this high-performance environment, fuselage
frames measuring up to seven metres in length are milled in aluminium. As part of the same manufacturing
　
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