JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - 72

SOLUTlONS medical

time X-ray imaging tool used in
surgery). Conventional metallic
instruments must be repositioned or removed to allow clear
imaging during surgery while
composite replacements reduce
surgery time and patient risk. It is
now possible to produce carbon
composite instruments, typically
epoxy or PEEK thermoplastic
components using continuous
or chopped carbon fibres, that
are lighter in the surgeon's
hands, less prone to scratching
highly-polished metallic surfaces
on implants and that fulfil all
requirements of the high-temperature autoclave sterilization
process.
The ability to repeatedly and
comfortably position the patient
with very high accuracy using
lightweight equipment that does
not interfere with the treatment
has driven the development of
sophisticated restraint devices
for radiotherapy applications.
Carbon fibre prepreg table tops
have been used in X-ray and
imaging tables for many years as
they are radiolucent and provide
the clearest image results, but
it is a more recent development
to use carbon fibre to hold the
patient perfectly still. Stiff and
lightweight devices now offer
enhanced functionality while
improving patient comfort and
reducing the lifting load for
nursing staff.
Continuous fibres with
optimized surface properties
At JEC World 2017, Hexcel explained how many of its composite materials, including carbon
fibres, prepregs, adhesive films,
honeycomb cores, woven and
NCF fabrics, have been incorporated in many of the applications
discussed so far, with many of
these sales being supported by
its global network of official

72

distributors. The company also
detailed how fibres from the Salt
Lake City (USA) and Illescas
(Spain) plants are being used in
two cutting-edge product areas
where its unique capability in
unsized fibres is proving to offer
a significant advantage.
Unsized carbon fibres
reinforcing the body from
within
Radiolucency, improved fatigue
performance and the ability to
design a semi-flexible fixation
are the key benefits that have
enabled carbon fibre-reinforced
thermoplastic components to
establish a key position in
highly-loaded implants within
the human body. Fixation plates
for large bone fractures and
spinal fusion, dental implants,
anchors for sutures, fasteners and
components for joint repair and
replacement can all be produced
with biocompatible composites.
Thermoplastic composites with
chopped carbon reinforcement
fibres have been approved for use
in implants for some time and,
while these do offer increased
mechanical performance over
traditional reinforcements, the
designers of the latest implant
devices have been driving the
development of continuous-fibre
solutions.
By working with Hexcel, the
only manufacturer to supply
continuous unsized fibre that
can be efficiently and successfully processed into UD tapes,
thermoplastic composite manufacturers are able to maximize
the interface bonding between
the fibre and resin matrix. As
the fibre is totally without sizing,
Hexcel customers have been able
to obtain the approval of the US
Food and Drug Administration
(FDA) for use within the body.
The resulting composite compo-

jec composites magazine / N°119 March 2018

The Rio Paralympics 2016

nents feature excellent strength
coupled with a very high fatigue
resistance.
In tests comparing components
made from Ti-Al6-4V titanium
and 316L stainless steel with a
carbon fibre-reinforced PEEK
part, fatigue failure was seen
at 40,000 cycles for titanium,
440,000 cycles for steel with
the CF/PEEK component
completing a massive 4 million
cycles without failure (source:
CarboFix Orthopedics Ltd.) This
improved fatigue performance
represents a huge patient benefit,
extending the life of implants and
avoiding costly and invasive revision surgery currently required
for certain metal components
such as replacement joints.
Crucially, the parts produced
can also be designed to be less
stiff than traditional metallic
options, providing a much better
match with the existing bone
structure and thus encouraging
load sharing and regeneration
of the fractured bone. PEEK
and PEKK resin matrices are
common in these implant applications but an additional benefit

of using unsized fibres is that the
reinforcement remains compatible with any thermoplastic resin
selected for manufacturing.
Lighter and faster life-saving equipment with carbon
fibre conductors
Hexcel has also supplied unsized
fibres to converters who coat
them with nickel and other metals to enhance the conductivity
of the fibre before it is processed
into a braided or linear core for
wires and cables. Nickel-coated
HexTow® IM7 and AS4 carbon
fibres from the Salt Lake City
plant have been used in front
line life-saving devices such as
automatic external defibrillators
(AEDs). Composite leads are
flexible and lightweight, allowing
the AED to be packaged into a
smaller, more portable unit. In
addition, radiolucency means
there is no need to remove the
electrode leads from the patient
before any X-ray or other imaging, saving time and reducing
patient risk.
More information:
www.hexcel.com


http://www.hexcel.com

Table of Contents for the Digital Edition of JEC COMPOSITES MAGAZINE - Issue #119 - March 2018

Cover
Edito
Opinion: Aeronautics
Contents
NEWS
In brief
Agenda
BUSINESS
KPIs - Up-to-date key performance indicators for the fibre-reinforced plastics market
Opportunities - Advanced plastics and composites break through the automotive sector
EV - China: driving the whole car supply chain, electric vehicles are in full swing
MANUFACTURING
Surface - New machine system takes surface finishing to a new level
3D printing - Additive manufacturing of highperformance composite structures
Automotive - Body in black versus body in white
Automotive - Sheet moulding compression of prepreg sheets for a composite subframe
Simulation - High-quality sound-absorbing automotive carpets
Curing - GRP composite manufacturing optimization: opportunities with UV curing
FEATURE Materials: pushing boundaries - Do materials have their limits?
Fastener - High-resistance fastener for structural composite parts
Recycling - Applications of recycled carbon fibre in high volume manufacturing
Resin - High-performance epoxy/carbon fibre SM
Honeycomb - High-performance polypropylene honeycomb boards at minimal cost
CFRTP - Beautiful, lightweight, and tunable
SOLUTIONS
Aeronautics - A demountable composite wing box for private planes
Civil engineering - Repair and replacement of concrete pipes with carbon composites
Sports - Sustainable composite manufacturing kicks into high gear
Medical - lmproving lives with carbon composites
TECHNOLOGY
NDT - NDT in-line inspection using the NIDIT procedure
Assembly - Ensuring the durability of adhesive-bonded assemblies
Index
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JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - 84
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - Cover
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - Ad1
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - 1
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - 2
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - Edito
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - Opinion: Aeronautics
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - 5
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - Ad2
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - Ad3
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - Contents
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - 7
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - In brief
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - 9
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - 10
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - 11
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - Agenda
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - 13
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - 14
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - 15
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - 16
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - KPIs - Up-to-date key performance indicators for the fibre-reinforced plastics market
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - 18
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - 19
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - Opportunities - Advanced plastics and composites break through the automotive sector
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - 21
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - 22
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - EV - China: driving the whole car supply chain, electric vehicles are in full swing
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - 24
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - 25
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - Ad4
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - Ad5
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - Surface - New machine system takes surface finishing to a new level
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - 27
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - 28
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - 3D printing - Additive manufacturing of highperformance composite structures
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - 30
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - 31
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - 32
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - 33
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - 34
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - Automotive - Body in black versus body in white
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - 36
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - 37
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - 38
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - Automotive - Sheet moulding compression of prepreg sheets for a composite subframe
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - 40
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - 41
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - Simulation - High-quality sound-absorbing automotive carpets
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - 43
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - Curing - GRP composite manufacturing optimization: opportunities with UV curing
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - 45
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - 46
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - 47
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - Fastener - High-resistance fastener for structural composite parts
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - 49
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - 50
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - Recycling - Applications of recycled carbon fibre in high volume manufacturing
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - 52
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - Resin - High-performance epoxy/carbon fibre SM
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - 54
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - 55
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - 56
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - Honeycomb - High-performance polypropylene honeycomb boards at minimal cost
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - 58
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - CFRTP - Beautiful, lightweight, and tunable
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - 60
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - 61
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - 62
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - Aeronautics - A demountable composite wing box for private planes
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - 64
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - 65
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - Civil engineering - Repair and replacement of concrete pipes with carbon composites
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - 67
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - 68
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - Sports - Sustainable composite manufacturing kicks into high gear
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - 70
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - Medical - lmproving lives with carbon composites
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - 72
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - 73
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - NDT - NDT in-line inspection using the NIDIT procedure
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - 75
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - 76
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - Assembly - Ensuring the durability of adhesive-bonded assemblies
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - 78
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - 79
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - 80
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - 81
JEC COMPOSITES MAGAZINE - Issue #119 - March 2018 - Advertisers
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