Download - “Wear It” Impact Baseball Vest
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“Wear It” Impact Baseball Vest
Garth FletcherKyler HastKyle Meredith
Maria MiroRyne WickeryCecilia Wong
March 20, 2014
AdvisorsDr. K. AminDr. D. Olawale
Team Members
SponsorGavin Boone
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• Batter may incur severe or painful injuries from being hit by a baseball.
• These types of injuries may deter younger children from playing baseball.
• With an effective protective collar injuries to the spine and neck can be prevented.
• No current protection is available for the neck region.
Background
Garth Fletcher
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• Design a collar to prevent injury from baseball impact.
• Design the collar so it does not hinder performance.
• Design collar to be integrated into current vests.
Scope
Garth Fletcher
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Material Selection• EVA Foam
• High Density Polyethylene
Garth Fletcher
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Why EVA Foam• Good Characterize
• Toughness• Flexibility • Resistance to chemical
• Many different application• Shock absorber
Garth Fletcher
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Why EVA Foam• Minimize kinetic energy by an impact
• Lifespan of 3 years
• Viscoelastic recovery occur after impact
Garth Fletcher
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Why HDPE
Garth Fletcher
Characteristics • Thermoplastic• Large density ratio• Lightweight• Resistant to water and most solvents
Application• Bull riding vest• Fuel tanks• Storage
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Collar Design
Cecilia Wong
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Flat Neck Plate
Cecilia Wong
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Collar Attachment
Between the two materials
• Contact cement
To the vest
• Nylon fabric sleeve sewn to the vest neckline.
Cecilia Wong
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Testing Procedure/Plan
Kyle Meredith
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• Machine is located in HPMI; not currently functional
• 6 in X 6 in flat piece of sample will be used
• Measures impact energy and deformation of sample
• Enables team to determine correct size of final collar
design
• Video processing also being considered
Compression Testing
Kyle Meredith
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• Force Sensor mimics surface area of ball• Multiple heights are being considered(3 ft, 6ft, etc)• Sample will sit at base of machine(free, unclamped)• Deformation is measured after each drop• Impact energy is calculated from values• Velocity profile may also be obtained from video
processing
Testing Procedure
Kyle Meredith
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Questions?