pr.35 - viper impact performance · background 26.97 16.22 13.41 11.59 8.37 8.14 7.18 6.39 0 5 10...
TRANSCRIPT
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PR.35 - vIPERImpact PERformanceDevice
BEN BANKS
ZORBEY CANTURK
ROB GRUNDY
ROB MELE
1
ADVISOR:
DR. LESLIE LAMBERSON
SPONSOR:
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Outline
• Background
• Methods and Design Description
• Context and Impact
• Project Timeline and Conclusion
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Background
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Football Ice Hockey Girls' Soc Boys' Lax Girls' B-ball Girls' Lax Boys' Soc Wrestling
Concussions per 10,000 competition exposure(a game is equal to one game played by one player)
3http://www.washingtonpost.com/sports/highschools/reducing-the-number-of-concussions-in-high-school-girls-soccer-is-a-daunting-task/2014/04/24/4054f470-c6ff-11e3-9f37-7ce307c56815_story.html
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Head Injuries in Soccer• 92,505 concussions in high school soccer per year
• Players not wearing protective soccer headgear are 2.7 times more likely to suffer a concussion than those who did wear headgear
• Concussions in soccer are not necessarily caused by heading the ball
• Head to head impacts pose high concussion
• In a peer reviewed study, 63% of college-level soccer players had concussion symptoms in a single year
• The concussion rate in youth soccer is similar to that in youth American football
4[1] National High School Sports-Related Injury Surveillance Study 2011/2012 [2] Delaney (2007) [3] Boden (1998) [4] Withnall (2005) [5] Delaney (2002) [6] Baroff (1998)
https://www.youtube.com/watch?v=XjwO9InuFJk
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DeliverablesProblem Statement• Currently, Storelli has no means of testing the effectiveness of their protective headwear in house
• No readily available test device can be purchased
Goals• To design, manufacture and test an impact test rig that will allow Storelli to easily test new materials
and concept designs
• Stay within predetermined budget
• Meet all stakeholders needs
• Deliver working device by June 8th, 2015
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StakeholdersPrimary• Storelli• American Society of Testing and Materials (ASTM)• Drexel University
Secondary • Official Soccer Institutions• FIFA
• NCAA Men & Women’s Soccer
• Youth Soccer Organizations
• Licensed Equipment Suppliers
6http://www.psychiatrictimes.com/articles/concussion-young-athletes-heads-diagnosis-and-management
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Important Needs
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Category Priority Description Metric Value
ASTM 1Able to meet ASTM Standards
All conditions met Yes
ASTM 1 ASTM Upper Limit Force G force 784 N (80-g load)
ASTM 1 ASTM Velocity Velocity 2-3.8 m/s
ASTM 1Able to generate frequency of impacts
Frequency6 impacts every minute
Operations 1 RepeatableTolerance Difference between multiple tests
<5%
Business 2Production Cost within Budget
Budget <$7,500
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Needs• ASTM • Current ASTM testing standards (for soccer headgear)• 80 g-force
• 6 impacts at 1 min intervals
• 2.0 – 3.8 m/s
• Testing• Head-to-forehead impact
• Head-to-goalpost impact
• Head-to-Modular Elastomer Programmer (MEP)
• Multiple impact test
• Stay in Budget • $7,500
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Outline
• Background
• Methods and Design Description
• Context and Impact
• Project Timeline and Conclusion
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The Concurrent Engineering Method
10Concurrent Engineering [Online]. Available FTP: http://en.wikipedia.org/wiki/Concurrent_engineering
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Current Impact Fatigue Devices
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Drop Weight System Kolsky (Split-Hopkinson) BarPendulum System
Drop Weight System:http://www.instron.us/wa/product/CEAST-9340-Drop-Tower.aspx
Pendulum System: http://www.clickindia.com/detail.php?id=132119467
Kolsky Bar: https://www.asme.org/about-asme/who-we-are/engineering-history/landmarks/242-split-hopkinson-pressure-bar-apparatus
1 meter
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Design A) Pendulum System •Advantages• Simple
• Durable
• Little Maintenance
• Limitations• Repeatable Results
• 6 impacts at 1 minute intervals
12
10 cm
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Design B) Drop Weight System• Advantages• Simple
• Easily Adjustable
• Cheap
• Limitations• Requires two people to operate
• Adjustment in velocity
• Large
13
10 cm
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Design C) Mechanical & Electrical System• Advantages• Repeatable results
• Adjustable velocities
• Multiple Outputs
• Limitations• Maintenance
• Durability
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10 cm
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Decision Matrix for Concept SelectionDecision Factors
A B C SpecificationCriteria Wt
Repeatable impacts 2.0 1 2 5 6 impacts at 1 minute intervals
ASTM upper limit force 2.0 3 5 5 784 N (80-g load)
Maintenance 1.0 5 5 3 20 hours per year
ASTM velocities 2.0 3 1 4 2.0 – 3.8 m/s
Durability 2.0 5 5 3 5 years before major maintenance
Portable or collapsible 1.0 4 1 3 1 cubic meter
Multiple inputs 2.0 4 4 4 >5 inputs
Weighted Scores 41 40 48
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Process & Results• The ultimate goal of this design process is to create a working impact fatigue device for Storelli
• Utilize a parametric software
• MATLAB
• Other Resources• Dr. Leslie Lamberson – Team Viper’s Advisor
• Mr. Steve Pagano – Graduate student of Dr. Lamberson
• Dr. Jing Liang – Co-Founder & Head of Product Development of Storelli
• Drexel Machine Shop
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Project Budget• Mechanical – $3,500• Motor – $200-400
• Mounted Bearing – $200-300
• Electrical – $1,500• PLC – $300-500
• Linear Actuator – $100-200
• Labor – $1,000-1,500• Custom Parts
• Miscellaneous – $1,000
• Total Budget
• $7,500
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0
500
1000
1500
2000
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3500
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Mechanical Electrical Labor MiscellaneousU
SD (
$)
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Outline
• Background
• Methods and Design Description
• Context and Impact
• Project Timeline and Conclusion
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Economic Analysis •Niche market• Specialized for headgear
• <10 expected to be produced
• Mass production economically not feasible
•Prototype costs to develop and test• $5,000-$7,000
•Full scale costs• Similar to prototype costs
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Environmental ImpactSustainable:• Low production• Low material consumption
•Recyclable and salvageable parts
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Sustain-ability
People
Product
Pros-perity
Planet
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Social Merit & Ethical AnalysisProducts with:•Falsified data •Falsified credentials
Creates false sense of security
Quality test data leads to a better products • Leads to a real concussion
prevention
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http://www.forcefieldheadbands.com/productlineneo.html
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Outline• Background
• Methods and Design Description
• Context and Impact
• Project Timeline and Conclusion
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Project TimelineAction Sep Oct Nov Dec Jan Feb Mar Apr May Jun
Project ID
Concept research and market analysis
Stakeholder ID
Manufacturing and design studies
Evaluate best design
Ordering the parts
Installing equipment
Machining
Electrical wiring
Setting up data acquisition systems
Validation
Testing of materials
Final evaluation and reporting
Completed On Track Future Work
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Future Work
Winter Term Deliverables
• Regular reports to Storelli
• Impact fatigue calculations
• The impact test rig
• Engineering design files
Spring Term Deliverables
• Calibrated impact test rig
• Analysis of testing material
• Final report on testing results• Suggestions for future work
• Possibly challenging the ASTM Standard Specifications on Headgear Requirements for Soccer
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Conclusion
Project Goal
• Building an impact test rig for testing soccer headgear materials
Broad Impact
• Innovating a sustainable solution for Storelli, and other manufacturers
• Having a significant impact on the studies made on soccer concussions
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http://pr35teamviper.wordpress.com/(Updated regularly after biweekly meetings)
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AcknowledgementsDr. Leslie Lamberson – Advisor, Drexel University
Mr. Steve Pagano – Graduate student of Dr. Lamberson, Drexel University
Dr. Jing Liang – Co-Founder, Storelli
Ms. Olivia Fuller – Graphic Design, Drexel University
Mr. Tim Killeen – Vice President of Sales, Full90
Dr. Robert McGrath – Senior Associate Vice Provost, Drexel University
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Background References[1] National High School Sports-Related Injury Surveillance Study 2011/2012
[2] Al-Kashmiti, Delaney, et al. “The Effect of Protective Headgear on Head Injuries and Concussions in Adolescent Football (Soccer) Players” British Journal of Sports Medicine (2007)
[3] Boden, Kirkendall et al. “Concussion Incidence in Elite College Soccer Players” American Journal of Sports (1998), 26:238-41
[4] Withnall, Shewchenko et al., “Effectiveness of Headgear in Soccer” British Journal of Sports Medicine (2005), 39(supp1):i40-i48
[5] Delaney, Lacroix et al., “Concussions Among University Football and Soccer Players” Clinical Journal of Sports Medicine (2002), 12(6):331-38
[6] Baroff, “Is Heading a Soccer Ball Injurious to Brain Function?” Journal of Head Trauma Rehabilitation (1998), 13(2):45-52
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Q & A
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