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Skyracks. Sam Bennett Arbaaz Khan. Agenda . Team roles problem statement Statement of purpose Justification Timeline Research Market Research Buyers and consumers Market of backpacks Geography of selling Survey Data Designs Decision Matrix Prototype Testing and data
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Skyracks Sam Bennett Arbaaz Khan
Agenda • Team roles • problem statement • Statement of purpose • Justification • Timeline • Research • Market Research • Buyers and consumers • Market of backpacks • Geography of selling • Survey Data • Designs • Decision Matrix • Prototype • Testing and data • Refinements • Final Solution • summary
Team roles • Leader: Both • Scribe: Samantha • Timekeeper: Arbaaz
Problem Statement • Due to the poor distribution of weight across the body by traditional two strap backpacks, over twenty million American middle and high school students exceed the recommended amount of stress (15% of their body weight) placed on their shoulders, neck, and lower back resulting in pain, distortion of the natural "S" curve of the spine, and poor posture. According to a study performed in May of 2002 to May of 2003 by the Consumer Product Safety Commission, an estimated 21,000 children were admitted to an emergency room from backpack related injuries.
Statement of Purpose • Reduce the negative impact on posture and pain felt by students while wearing a backpack.
Justification • A survey conducted by The American Academy of Orthopedic Surgeons of 101 doctors showed: • 70% of doctors believe backpacks are a clinical problem for children. • The majority of doctors believe backpacks become a clinical problem at 20% of the wearer’s body weight. • 58% of doctor’s surveyed have seen school-age patients complaining of back and shoulder pain from heavy backpacks. • Retrieved from: http://www.chiro.org/LINKS/FULL/AAOS_tells_media.shtml
Justification • According the American Chiropractic Association, backpack related injuries were the cause of over 7,000 emergency room visists in 2001. • “In my own practice, I have noticed a marked increase in the number of young children who are complaining about back, neck and shoulder pain,” -Dr. Scott Bautch, a member of the ACA's Council on Occupational Health. Retrieved from: http://www.spineuniverse.com/wellness/ergonomics/backpack-misuse-leads-chronic-back-pain-doctors
Market Research • Backpack Market: • total available market 4,093,750 people • Sales on backpacks:
Market research • Competitors: • Jansport Right Pack Wool • Adidas Lucas Backpack • North Face Jester Backpacks • Nike Cheyenne 2000 Classic
Market research • Buyers: • Parents • Users: • Students • Age range 12-18 years old
Performance Benchmarks • Fully functional and usable as a backpack • Can hold at least 444 Lbs • 1 lb = 4.44 N
What problems do you currently experience with backpacks? (Taken from our online surveys) • “Too heavy to lift, hard to put on, and feels way to heavy on back.” • “Pain in my shoulders.” • “Textbooks are too heavy to carry on the shoulders/back.” • “The weight I carry is too heavy and it hurts my back/shoulders.” • “Painful straps or too little space”
Build process • Draw out constraints on materials • Straps • Ban saw strips into appropriate sizes • Cut 2 of the 4 22’’ by 22’’ in half • Trim one end of halved strips off by a 45˚ angle • Vest • Cut out dimensioned strips of fabric • Use sewing machine attach pieces together
Testing • Weight distribution • Strap effectiveness • Comfort ability • Ease to Zip • Able to fit in locker
