Which Possible Shin Guard Material Absorbs The Most Force - PowerPoint PPT Presentation

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Which Possible Shin Guard Material Absorbs The Most Force

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Tibia, Fibula protection. EVA (Ethylene Vinyl Acetate) = most common. Experiences ... The effectiveness of shin guards and materials has been studied only to a ... – PowerPoint PPT presentation

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Title: Which Possible Shin Guard Material Absorbs The Most Force


1
Which Possible Shin Guard Material Absorbs
The Most Force?
  • Emily Bell, Aryn Grause, Becca Wales

2
Shin Guards Background
  • Tibia, Fibula protection
  • EVA (Ethylene Vinyl Acetate) most common
  • Experiences

3
Previous Studies
  • The effectiveness of shin guards and materials
    has been studied only to a limited extent.
  • Institute for Preventative Sports Medicine
  • -temperatures (hot, cold, room) effect on shin
    guard effectiveness
  • -comparison of common shin guards and their
    effectiveness
  • University of Birmingham
  • -ankle protection
  • -Polycarbonate (over EVA)

4
Background of Materials Tested
  • Gel Pad travel temperature control packs, bike
    seats, ankle protection
  • EVA (Ethylene Vinyl Acetate) shin guards,
    tennis shoes, manufacturing
  • PE Blue (Polyethylene) packaging, floatation
    devices, athletic equipment, recycled plastic bag
  • Vinyl Acetate safety vests
  • XPE White (Cross Linked Polyethylene) flotation
    applications

5
Conditions
  • Warm, Dry
  • (70.5 F, 21.2 C)
  • Warm, Wet(70.5 F, 21.2 C)
  • Cold, Dry
  • (50.9 F, 11.2 C)
  • Frozen
  • (30.4 F, C)
  • Damp
  • (50.9 F, 11.2 C)

6
Dual Range Force Sensor
  • Detects force
  • (better material
  • less force detected)

7
Methods
8
Methods
9
Results Soccer Ball
T test for gel pad (best average) data compared
to PE blue (worst average) data is 0.286295, this
data has no correlation
10
Results Softball
T test for gel pad (best average) data compared
to PE blue (worst average) data is 0.082333,
closer to .05, bust still above it, which means
there is no real significance connecting the data.
11
Results (soccer)
  • Best Results
  • Gel Pad (cold wet)
  • EVA (warm wet)
  • PE(warm dry)
  • Vinyl Acetate (cold dry)
  • XPE (frozen)
  • Best Average Gel Pad

12
Results (softball)
  • Best Results
  • Gel Pad (cold dry, warm dry, frozen)
  • Best Average Gel Pad

13
Conclusions
  • Gel 1
  • EVA 2
  • Results too scattered and inconsistent
  • The data shows that more testing needs to be done
    to conclude this experiment

14
Real Life Connections
  • Gel pads are not practical
  • EVA most common material
  • Cost
  • EVA- 12x18, .79
  • Gel- Brace, 19.99

15
What We Would Have Changed
  • More trials
  • Test for one weather condition
  • More reliable mechanism
  • Larger material pieces

16
What To Do Next
  • Continue trials to draw conclusions
  • Place the results into more life-like situations
  • - real soccer ball, impact apparatus, real
    shin
  • - actual shin guards
  • Ankle protectors vs. No ankle protection
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