uses loss of rubber fillaments. HYPOTHESIS With my general knowledge of skateboarding and my new knowledge of Kevlar and Wearforce I beilieve they will make a suitable product for needs of skateboarding. I strongly believe this because overtime Kevlar has been proven to be a strong and durable material, and I do not believe DuPont would waste so much time on the Wearforce if it fails to do what they designed it for, abbrasion ressitance. With these factors into consideration I believe my experiments will succseed and flourish. PROCEDURE For the process of testing the Wearforce, Richard Gould (DuPont representative) and I decided on procedures. We finalized on using a Wyzenbek abrasion test and a Taber abrasion test. To ensure proper results, I planned to test the material in action during a skateboard activity. During a Wyzenbek test a piece of 40 grit sand paper by motioning back and forth at 90 cycles a minute while the material being tested is pushed into the sandpaper. The sandpaper is pushed down by exactly four pounds of pressure, while six pounds of tension is being applied to the testing material. After every 1,000 cycles, the sandpaper is changed. A Taber test, being less aggressive, only uses a pass or fail sitituation. If the material passes 5,000 cycles, then it passed, if not it fails. Instead of using sandpaper during the test as an abrasive, an abrasive spinnig wheel is used. Being most simplistic of all I planned to go skateboarding with the Wearforce on the ollie area of my shoe. Duning my sesion, I performed the following moves, an oille and kickfllp. These tricks were reapeated to ensure satisfaction in the product. MATERIALS * 40 grit sandpaper * Wearforce 9 sneaker leather * boot leather Wyzenbek testing mahine * Taber testing machine * contact cement * skate shoes * skateboard RESULTS When the tests were selected, I had learned that my test planned for the Kevlar had already been performed, and failed, due to the f...
