Team Wendy Proprietary/Business Sensitive Information The information transmitted may contain sensitive and/or privileged material. Any review, retransmission, dissemination or other use of, or taking of any action in reliance upon, this information by persons or entities other than the intended recipient is prohibited. 17000 St. Clair Ave., Bldg. 1 Cleveland, OH 44110 www.teamwendy.com Overprotective and Proud of It SEATING MATERIALS --- 14 June 2011
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Team Wendy Proprietary/Business Sensitive Information
The information transmitted may contain sensitive and/or privileged material. Any review, retransmission, dissemination or other use of, or
taking of any action in reliance upon, this information by persons or entities other than the intended recipient is prohibited.
17000 St. Clair Ave., Bldg. 1Cleveland, OH 44110www.teamwendy.com
Overprotective and Proud of It
SEATING MATERIALS---
14 June 2011
Team Wendy Proprietary/Business Sensitive Information
The information transmitted may contain sensitive and/or privileged material. Any review, retransmission, dissemination or other use of, or
taking of any action in reliance upon, this information by persons or entities other than the intended recipient is prohibited.
Certified SBA HubZone company, Cleveland, OH Certified ISO 9001:2008 with Design
US Army and US Marine Corps• Sole provider of ground combat helmet suspension systems
since 2005 • Distributed through the AbilityOne program
o Contract #SPM1C1-09-D-F006
Current Research & Development• Military vehicle seating and flooring• Improved energy absorbing materials• Next generation military helmet suspension system• Sports helmet suspension systems• Body padding for military and sports
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Team Wendy Proprietary/Business Sensitive Information
The information transmitted may contain sensitive and/or privileged material. Any review, retransmission, dissemination or other use of, or
taking of any action in reliance upon, this information by persons or entities other than the intended recipient is prohibited.
Apply helmet technology to seating – similar goalsbe as SAFE, as THIN, as LIGHT, and as COMFORTABLE as possible
Safero Team Wendy represents the leading edge of impact and vibration
absorbing material technology
o Only material to pass US Army helmet impact spec.
o Developed for military seats (i.e. mine blast protection)
Thinnero TW helmet pads are ¾” thick, including comfort layer
o Seats vary by performance goals
Lighter & Comfortableo In addition to energy absorbing materials, TW makes
comfort padding up to 40% lighter than most seat foams
o Currently developing a light-weight, molded seat material
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Too Soft…• Rider “sinks in” too far• Even small bumps push through
the pad causing discomfort• Compressed material springs rider
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“Tune” material for ideal performance• Rider sinks in enough to be comfortable• Material still has room to compress, absorbing shocks• Less “springy” material (viscoelastic) will not launch rider
Homogenous SeatSingle material balanced between comfort, performance, thickness, and weight.
Comfort layer conforms to rider shape and absorbs small bumps with less spring back.
Performance layer absorbs impacts.
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Layered Seat
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Impact/Shock Vibration Flame Resistant
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Range of sources• Rough terrain (low level) to IED/Mine blast
(high level) Injury Metrics: looking at what’s common
and what’s coming
• Dynamic Response Index (DRI) developed to predict probability of thoracolumbar-spine fracture injury during ejection seat use – based on pelvic acceleration
• Lumbar Load Criterion: spinal compressive load limits, used in vertical crash and impact testing to prevent spinal cord being compressed or severed which may lead to instant paralysis or fatality
• Sed(8): Vibration containing multiple shocks. Equivalent static compressive dose based on acceleration data taken at the seat surface, transfer function used to determine acceleration of L4 vertebrae
Team Wendy Proprietary/Business Sensitive Information
The information transmitted may contain sensitive and/or privileged material. Any review, retransmission, dissemination or other use of, or
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Repeated low levels shocks and vibration
The Second Chesapeake Power Boat Symposium,
March 19-20 2008, Annapolis Maryland, USA 12
Normalize dose
from measured
duration to daily
duration
Dkd=Dk[td/tm]1/6
Compute Spine
Acceleration DoseDk=[S(ALk)
6]1/6
Compute x,y,z
Lumbar
Dynamics
ALk=f(Ak)
Sed(8)Measure x,y,z
accelerations at
personnel
locations: Ak
Compute Daily
Equivalent Static
Compressive StressSed=[Sk(mk*Dkd)
6]1/6
k=x,y,z
High energy impacts (blast/crash)
0
1
2
3
4
5
6
7
8
Zorbium Seated on Deck Mk 5 V 5
Sed
(8)
MP
a
Seating Option
Sed(8) Calculator Results
ThresholdObjective
MK V 973 at 42 knots in Head Seas, 1.9m significant wave height, 5.261 second wave period
Mine blast simulation: Laboratory adaptation of NATO test standard
RTO-TR-HRM-090
Equivalent sinusoidal pulse of ΔV = 7 m/s
Instrumented 180lb Hybrid III dummy drop from 5’2”
Team Wendy Proprietary/Business Sensitive Information
The information transmitted may contain sensitive and/or privileged material. Any review, retransmission, dissemination or other use of, or
taking of any action in reliance upon, this information by persons or entities other than the intended recipient is prohibited.
Team Wendy’s ZFR seat absorbs a simulated mine blast with far less acceleration to the passenger than other seat materials.
Incr
ease
d P
rote
ctio
n
Team Wendy Proprietary/Business Sensitive Information
The information transmitted may contain sensitive and/or privileged material. Any review, retransmission, dissemination or other use of, or
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Transmissibility measuremento At increasing frequency, compare the motion of a vibrating table to the
motion of a weight resting on a foam seat.
o output ÷ input > 1 foam is increasing motion (amplifying)
< 1 foam is reducing motion (attenuating)
Table vibrates at increasing frequency
Sensors measure acceleration
above and below the seat foam Weight
Seat Foam Specimen
Input
Output
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Team Wendy Proprietary/Business Sensitive Information
The information transmitted may contain sensitive and/or privileged material. Any review, retransmission, dissemination or other use of, or
taking of any action in reliance upon, this information by persons or entities other than the intended recipient is prohibited.
Commodity seat foam vs. Team Wendy ZFR• Handbook of Human Vibration (Griffin, 1990)
o “Dominant frequencies transmitted by vehicles is below 20 Hz”
o “Maximum passenger discomfort occurs in the frequency range from 4 to 8 Hz, and vibration at frequencies above 10 Hz are of relatively minor importance”
Am
plif
icat
ion
Discomfort
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Team Wendy Proprietary/Business Sensitive Information
The information transmitted may contain sensitive and/or privileged material. Any review, retransmission, dissemination or other use of, or
taking of any action in reliance upon, this information by persons or entities other than the intended recipient is prohibited.
Exposure Action Value (EAV)• The amount of time necessary for user-felt
vibrations to reach discomfort levelo Prescribed acceleration of 0.5 m/s2 [ISO 2631]
• In industry, if this value is met, the employer must take action to reduce vibration
Exposure Limit Value (ELV)• The amount of time necessary for user-felt
vibrations to reach unsafe levelo Prescribed acceleration of 1.15 m/s2 [ISO 2631]
• In industry, this value may not be exceeded
Team Wendy Proprietary/Business Sensitive Information
The information transmitted may contain sensitive and/or privileged material. Any review, retransmission, dissemination or other use of, or
taking of any action in reliance upon, this information by persons or entities other than the intended recipient is prohibited.
Team Wendy’s ZFRTM foam is certified to FAA 25.853.(Govmark test reports 2-80884-0 to 2-80895-1)
More rigorous than the typical FMVSS 302 standard.
• FMVSS 302 Automotive burn standardo Horizontal burn, 1550ºF, 1.5” tall flame for 15 secondso Passing criteria is max burn rate of 4 inches/minute
• FAA 25.853 Aviation burn standardo Vertical burn, 1550ºF, 1.5” tall flame for 12 secondso Must self-extinguishes in 15 seconds, drips extinguish within 5 sec
Post FAA 25.853
ZFRTM FMVSS 302 foam
ZFRTM self extinguishes immediatelyupon removal of flame
Others require extinguishing, still burn 10mins after torch exposure
FMVSS 302 poly foam TPU military seat upgrade
How do seats respond to exposure to propane torch flame?
Team Wendy Proprietary/Business Sensitive Information
The information transmitted may contain sensitive and/or privileged material. Any review, retransmission, dissemination or other use of, or
taking of any action in reliance upon, this information by persons or entities other than the intended recipient is prohibited.
Team Wendy has cutting edge material technology• Extensive background in impact/shock management• Control over material properties• Significant upgrade in impact and vibration performance
Team Wendy offers custom solutions• Homogenous or layered seat options• Thin and lightweight options
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ZFR Locomotive Cab SeatZFR “Pilot Cut” military aviation seat
Team Wendy Proprietary/Business Sensitive Information
The information transmitted may contain sensitive and/or privileged material. Any review, retransmission, dissemination or other use of, or
taking of any action in reliance upon, this information by persons or entities other than the intended recipient is prohibited.
17000 St. Clair Ave., Bldg. 1Cleveland, OH 44110www.teamwendy.com
