1. 1 Final Design Review Stephanie Moran, Ryan Rosario, Zachary Stauber, Bethany Tomerlin, Juan Carlos Ybarra

2. 2 Outline of Presentation Goals For Prototype Conductivity In Carbon Filled Elastomers Polymer Selection Processing Methods Improvements In Experimental Design How Our Proposed Device Compares to Existing Products Gantt Chart

3. 3 Minimum Goals for Strain Sensor Prototype Minimum Requirements: MC Text output of Strain vs. Resistance Sensor

4. 4 Ideal Goals for Prototype: Glove Design Ideal Prototype: MC Output: Resistance vs. Strain Position of sensor

5. Thermoplastic Polyurethane Elastomers RTV polyurethanes RTV silicone rubbers 5 Many polymers can serve as a possible insulating matrix for the strain sensors.

6. 6 Electrons tunnel through the insulating matrix to nearby conductive carbon black particles. Polymer matrix Carbon black particle e-e-

7. 7 RTV polyurethanes vulcanize when polyols are added to isocyanate-terminated pre-polymers. Addition of polyol

8. 8 Current Processing Technique

9. 9 Removal of Bubbles With Pasta Maker Succeeded

10. 10 A Vacuum failed to Sufficiently Remove Bubbles

11. 11 New Instron Testing Set-up Eliminates Torsion of Polymer Voltage Current

12. 12 Conductive Rubber Bands Product on the Market

13. KLM Series reads strain up to 20% Foil/ Resin based gauge Foil gauges elongations < 5% Cheap “art form” to properly place electrical output needed Comparison of our product to other Commercial Over the Shelf Strain Gauges

14. Carbon Black $1.5325/ lb Current Rubber $5.37/ lb retail Relative Cost ~50 Strain gauges per pound of raw material A Preliminary Breakdown of the Cost of the Sense-On Strain Gauge