JEC COMPOSITES MAGAZINE - Issue #117 - November/December 2017 - 55

57

Aeronautics
Aircraft interior modules
based on thermoplastic honeycomb

58
59

In the world

SOLUTlONS

Vessel
Novel materials solution for high-pressure
composite tanks for hydrogen storage

medical SOLUTlONS

Composite wheelchair casters reduce weight
and provide a smoother ride

KIRK FRATZKE
Media Marketing Coordinator
Plasticomp

F

rog Legs got its start in
1997 when founder Mark
Chelgren had a chance
encounter with a quadriplegic
rugby team where a late night
discussion about their wheelchairs led him to develop an
alternative to the traditional rigid
casters used for the front wheels
on wheelchairs that allow them
to make tight turns.
A patented pivot point
and wedge-shaped shock
absorber
Instead of fixed forks that require
the wheel to move up and over
obstructions - bouncing the
rider in the process - Chelgren
designed his forks with a patented pivot point and wedge-shaped

When Frog Legs, Inc. of Ottumwa, Iowa, wanted to switch from machined
aluminium to a carbon fibre com osite for a new generation of their wheelchair
caster wheels, they partnered with PlastiComp, Inc., a global leader in long
fibre reinforced thermo lastic materials and technologies not onl for the
carbon fibre com osite but also for assistance in ensuring the material change
would be successful.

shock absorber that allows them
to move over impediments in
an arc path, functioning much
like airplane landing gear and
smoothing out the ride.
An arc is a much more efficient
movement, but its compression
zones are not linear, so instead
of a traditional cylinder-shaped
shock absorber, Frog Legs uses a
wedge shape to better handle the
differential loadings from front to
rear.
People with physical disabilities
who require wheelchairs for
mobility literally feel every
bump in the road as their chairs
encounter obstacles as seemingly
insignificant as cracks and uneven surfaces. A day filled with
constant vibration and jolts from
these hindrances causes fatigue
and can produce spasms in riders

that require treatment with
medication.
76% less vibrations
Testing performed by the Centre
for Industrial Research and
Service at Iowa State University
showed that 80% of the vibrations wheel chair riders experienced were created by the front
caster wheels and that Chelgren's
design improvements reduced
these vibrations from being
transmitted to the wheelchair
frame by 76%.
Chelgren knew he and Frog Legs
could do better. The company is
always being pushed to lighten
its product as people with disabilities are greatly affected by
any additional weight. This time,
they looked at a different type
of manufacturing process than
machining aluminium. Injection

N°117 November - December 2017

Conversion from machined aluminum
to injection molded long carbon fiber
reduced caster wheel weight by 33%.

/ jec composites magazine

55



Table of Contents for the Digital Edition of JEC COMPOSITES MAGAZINE - Issue #117 - November/December 2017

Cover
Edito
Opinion: Today, DAS Energy offers flexible, lightweight PV modules, designed and made in Austria
Contents
NEWS
In brief
Investments - Composite materials in the heart of the Augsburg science park
Agenda
BUSINESS
North America - Steady growth for North america
Pultrusion - EPTA report reveals vast opportunities for pultruded composites in residential housing
Strategy - China’s road to innovation: the German way
MANUFACTURING
Process - Fibre Patch Placement: expanding the scope of additive manufacturing
Automation - Flexibility in automated composites lamination
Fibre placement - Automated manufacturing of stiffened composite shells using dry fibre material
Industry 4.0 - lndustry 4.0 materials handling components and innovative LFT pellets
Feature Land transportation - A sector to conquer
Innovation - Composite innovations boost transport technologies
Body - Out-of-autoclave train body using a new curable prepreg
Floor - Enough to cover three soccer fields – Germany’s ICE train fleet’s composite floor
Market - Steady growth for the railway market
India - Modernization of Indian rolling stock - A welcome signal for composites
Mobility - lntegrated urban solutions are the core driver of user-oriented ad-hoc mobility
Materials - Composites hit a snag in railway
Truck - A large-volume, lightweight CFRP container
The future of inner-city freight is coming closer
SOLUTIONS
Medical - Composite wheelchair casters reduce weight and provide a smoother ride
Pressure vessel - Novel materials solution for high-pressure composite tanks for hydrogen storage
Aeronautics - Aircraft interior modules based on thermoplastic honeycomb
In the World
TECHNOLOGY
NDT - Health monitoring of CFRP using printed circuits
Software - Building a case for automated composite lay-up
Index
Advertisers
JEC COMPOSITES MAGAZINE - Issue #117 - November/December 2017 - 68
JEC COMPOSITES MAGAZINE - Issue #117 - November/December 2017 - Cover
JEC COMPOSITES MAGAZINE - Issue #117 - November/December 2017 - 2
JEC COMPOSITES MAGAZINE - Issue #117 - November/December 2017 - Edito
JEC COMPOSITES MAGAZINE - Issue #117 - November/December 2017 - Opinion: Today, DAS Energy offers flexible, lightweight PV modules, designed and made in Austria
JEC COMPOSITES MAGAZINE - Issue #117 - November/December 2017 - 5
JEC COMPOSITES MAGAZINE - Issue #117 - November/December 2017 - Contents
JEC COMPOSITES MAGAZINE - Issue #117 - November/December 2017 - 7
JEC COMPOSITES MAGAZINE - Issue #117 - November/December 2017 - In brief
JEC COMPOSITES MAGAZINE - Issue #117 - November/December 2017 - 9
JEC COMPOSITES MAGAZINE - Issue #117 - November/December 2017 - Investments - Composite materials in the heart of the Augsburg science park
JEC COMPOSITES MAGAZINE - Issue #117 - November/December 2017 - 11
JEC COMPOSITES MAGAZINE - Issue #117 - November/December 2017 - 12
JEC COMPOSITES MAGAZINE - Issue #117 - November/December 2017 - 13
JEC COMPOSITES MAGAZINE - Issue #117 - November/December 2017 - 14
JEC COMPOSITES MAGAZINE - Issue #117 - November/December 2017 - 15
JEC COMPOSITES MAGAZINE - Issue #117 - November/December 2017 - 16
JEC COMPOSITES MAGAZINE - Issue #117 - November/December 2017 - Agenda
JEC COMPOSITES MAGAZINE - Issue #117 - November/December 2017 - 18
JEC COMPOSITES MAGAZINE - Issue #117 - November/December 2017 - North America - Steady growth for North america
JEC COMPOSITES MAGAZINE - Issue #117 - November/December 2017 - Pultrusion - EPTA report reveals vast opportunities for pultruded composites in residential housing
JEC COMPOSITES MAGAZINE - Issue #117 - November/December 2017 - 21
JEC COMPOSITES MAGAZINE - Issue #117 - November/December 2017 - 22
JEC COMPOSITES MAGAZINE - Issue #117 - November/December 2017 - Strategy - China’s road to innovation: the German way
JEC COMPOSITES MAGAZINE - Issue #117 - November/December 2017 - 24
JEC COMPOSITES MAGAZINE - Issue #117 - November/December 2017 - 25
JEC COMPOSITES MAGAZINE - Issue #117 - November/December 2017 - Process - Fibre Patch Placement: expanding the scope of additive manufacturing
JEC COMPOSITES MAGAZINE - Issue #117 - November/December 2017 - 27
JEC COMPOSITES MAGAZINE - Issue #117 - November/December 2017 - Automation - Flexibility in automated composites lamination
JEC COMPOSITES MAGAZINE - Issue #117 - November/December 2017 - 29
JEC COMPOSITES MAGAZINE - Issue #117 - November/December 2017 - 30
JEC COMPOSITES MAGAZINE - Issue #117 - November/December 2017 - Fibre placement - Automated manufacturing of stiffened composite shells using dry fibre material
JEC COMPOSITES MAGAZINE - Issue #117 - November/December 2017 - 32
JEC COMPOSITES MAGAZINE - Issue #117 - November/December 2017 - 33
JEC COMPOSITES MAGAZINE - Issue #117 - November/December 2017 - 34
JEC COMPOSITES MAGAZINE - Issue #117 - November/December 2017 - Industry 4.0 - lndustry 4.0 materials handling components and innovative LFT pellets
JEC COMPOSITES MAGAZINE - Issue #117 - November/December 2017 - 36
JEC COMPOSITES MAGAZINE - Issue #117 - November/December 2017 - Innovation - Composite innovations boost transport technologies
JEC COMPOSITES MAGAZINE - Issue #117 - November/December 2017 - 38
JEC COMPOSITES MAGAZINE - Issue #117 - November/December 2017 - 39
JEC COMPOSITES MAGAZINE - Issue #117 - November/December 2017 - Body - Out-of-autoclave train body using a new curable prepreg
JEC COMPOSITES MAGAZINE - Issue #117 - November/December 2017 - Floor - Enough to cover three soccer fields – Germany’s ICE train fleet’s composite floor
JEC COMPOSITES MAGAZINE - Issue #117 - November/December 2017 - Market - Steady growth for the railway market
JEC COMPOSITES MAGAZINE - Issue #117 - November/December 2017 - 43
JEC COMPOSITES MAGAZINE - Issue #117 - November/December 2017 - India - Modernization of Indian rolling stock - A welcome signal for composites
JEC COMPOSITES MAGAZINE - Issue #117 - November/December 2017 - 45
JEC COMPOSITES MAGAZINE - Issue #117 - November/December 2017 - 46
JEC COMPOSITES MAGAZINE - Issue #117 - November/December 2017 - 47
JEC COMPOSITES MAGAZINE - Issue #117 - November/December 2017 - Mobility - lntegrated urban solutions are the core driver of user-oriented ad-hoc mobility
JEC COMPOSITES MAGAZINE - Issue #117 - November/December 2017 - 49
JEC COMPOSITES MAGAZINE - Issue #117 - November/December 2017 - Materials - Composites hit a snag in railway
JEC COMPOSITES MAGAZINE - Issue #117 - November/December 2017 - 51
JEC COMPOSITES MAGAZINE - Issue #117 - November/December 2017 - Truck - A large-volume, lightweight CFRP container
JEC COMPOSITES MAGAZINE - Issue #117 - November/December 2017 - The future of inner-city freight is coming closer
JEC COMPOSITES MAGAZINE - Issue #117 - November/December 2017 - 54
JEC COMPOSITES MAGAZINE - Issue #117 - November/December 2017 - Medical - Composite wheelchair casters reduce weight and provide a smoother ride
JEC COMPOSITES MAGAZINE - Issue #117 - November/December 2017 - 56
JEC COMPOSITES MAGAZINE - Issue #117 - November/December 2017 - Pressure vessel - Novel materials solution for high-pressure composite tanks for hydrogen storage
JEC COMPOSITES MAGAZINE - Issue #117 - November/December 2017 - Aeronautics - Aircraft interior modules based on thermoplastic honeycomb
JEC COMPOSITES MAGAZINE - Issue #117 - November/December 2017 - In the World
JEC COMPOSITES MAGAZINE - Issue #117 - November/December 2017 - 60
JEC COMPOSITES MAGAZINE - Issue #117 - November/December 2017 - NDT - Health monitoring of CFRP using printed circuits
JEC COMPOSITES MAGAZINE - Issue #117 - November/December 2017 - 62
JEC COMPOSITES MAGAZINE - Issue #117 - November/December 2017 - 63
JEC COMPOSITES MAGAZINE - Issue #117 - November/December 2017 - Software - Building a case for automated composite lay-up
JEC COMPOSITES MAGAZINE - Issue #117 - November/December 2017 - 65
JEC COMPOSITES MAGAZINE - Issue #117 - November/December 2017 - Advertisers
JEC COMPOSITES MAGAZINE - Issue #117 - November/December 2017 - 67
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