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involved. At the time of writing, the
remaining structures are being evaluated
to validate and compare the embodied
technologies.
When compared with other OOA
structural systems, ACG’s MTM44-1
exhibits the highest mechanical
performances and can compete with a
wide range of high toughness, autoclave
curable epoxy systems.
ACG first introduced OOA materials and
technology for aerospace structural
applications in the early 1990’s and has
radically developed its product portfolio
for this and many other demanding
applications since that time.
Numerous civil and military programs
currently use ACG’s OOA materials to
manufacture structures by manual lay-up
and state-of-the-art automated systems,
including Automated Tape Lay-Up (ATL)
and Automated Fibre Placement (AFP).
MTM®45-1, MTM®46 and MVR444
complete the line up of next generation
OOA processing structural systems
currently in use or under qualification for a
variety of civil and military applications.
Page 4 DForm™ - Deformable Composite System Productionised
Following extensive market testing,
DForm™, ACG’s ground-breaking tooling
and mass production component prepreg,
new custom-built processing equipment
has now been installed at the Group’s
Heanor manufacturing facility to further
enhance the product and to accelerate
productivity rates.
Previewed in 2008, DForm is a labour and
cost-saving prepreg technology and
advanced Deformable Composite System
(DCS) that combines the conformability of
a short fibre moulding compound with the
directional characteristics of a high
performance, long fibre composite.
This unique combination of characteristics
is achieved through selective fibre slitting
of a unidirectional prepreg precursor.
DForm does not require detailed
laminating or extensive vacuum
debulking. On the contrary, it readily flows
under press or autoclave pressure to
replicate the precise details of a complex
mould tool or components.
DForm for Tooling:
When compared to standard fabric-based
tooling systems, DForm offers
considerable savings in lay-up times
(typically in the region of 20 - 30%
reduction) through operational de-skilling,
brought about through ease of
application, as well as a readily achievable,
superior surface finish. Furthermore, the
directional nature of DForm’s structure
helps to maintain dimensional accuracy
and performance predictability, thereby
presenting a major advantage over
random short fibre and resin infusion
tooling systems. An added advantage is
DForm’s ability to create an extremely flat,
print-through free surface profile with no
local thinning or loss of fibre orientation.
DForm for Components:
Like all of ACG’s prepregs, DForm can be
customised to suit customers’ specific
requirements, and is particularly suited to
high volume semi-structural applications.
Dr. John Nixon, ACG’s Technical Marketing
Manager, said: “This new, market leading
technology is an exciting addition to our
extensive product range. DForm will allow
customers to save money and improve
efficiency whilst maintaining the high
standard expected of our products. We
look forward to working with customers to
find and develop new and exciting
applications for such a versatile
technology.”
ACG has entered into a contract that will
see the Group supply phenolic prepreg
materials for a Ministry of Defence (MOD)
project dedicated to improving the
protection of British troops serving in
urban environments of Afghanistan and
Iraq.
Originally ordered by the MOD from Force
Protection Incorporated in America, a total
of 151 Cougar vehicles will undergo their
Ballistic Quality Phenolic Prepregs to Improve Troop Safety
metamorphosis at Coventry (UK) based NP
Aerospace. Under a £81 million contract
from the MOD, NP Aerospace will morph
the 4 x 4 Cougar base vehicles into
‘Ridgbacks’ by upgrading their armour
protection and integrating weapons,
communications systems and specialist
electronic equipment. The morphed
vehicles will then join their big brother,
the Mastiff, on military operations with
British troops.
© Crown Copyright/MOD, image from www.photos.mod.uk.
ACG will be involved in the provision of
high performance glass phenolic prepreg
material to bolster existing vehicle armour
and provide improved protection for the
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