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Final Presentation

Final Presentation. Stephanie Moran, Ryan Rosario, Zachary Stauber , Bethany Tomerlin , Juan Carlos Ybarra . Goals Achieved . Inexpensive High Elongation (>10%) Precision (Error <6%). There is a minimum concentration of carbon black required for conductivity.

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Final Presentation

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

  2. Goals Achieved Inexpensive High Elongation (>10%) Precision (Error <6%)

  3. There is a minimum concentration of carbon black required for conductivity.

  4. Conduction in the composite cannot be explained by tunneling, but can be modeled by Mean Field Theory. e- e- 4nm

  5. As the sample elongates, the distance between nearby carbon black particles changes.

  6. Particle movement affected by the viscoelastic properties of the polymer. Viscoelastic Model

  7. Carbon black fillers significantly affect the microstructure of the polymer Sticky Hard Layer Glassy Hard Layer Carbon Black

  8. Steps to our Final Fabrication Process 15-25 % Carbon Black

  9. Steps to our Final Fabrication Process 15-25 % Carbon Black

  10. Steps to our Final Fabrication Process 15-25 % Carbon Black

  11. Steps to our Final Fabrication Process 15-25 % Carbon Black Calender

  12. Steps to our Final Fabrication Process 15-25 % Carbon Black 20% Vol. KetJen Carbon Black Calender

  13. Steps to our Final Fabrication Process 15-25 % Carbon Black 20% Vol. KetJen Carbon Black Calendar

  14. Steps to our Final Fabrication Process 15-25 % Carbon Black 20% Vol. KetJen Carbon Black Calender

  15. Steps to our Final Fabrication Process 15-25 % Carbon Black 20% Vol. KetJen Carbon Black -1hr Monomer -20 Minutes with Monomer andCross Linking Agent Calender

  16. HighShear Seen With Dispersion Blade

  17. Large Agglomerates Still Seen in Samples with Dispersion Blade

  18. Characterization ofvoids using confocal microscopy Mixed, calendered, and vacuumed Only mixed

  19. Four-point resistance measurements eliminate errors due to changing contact resistance. Current Voltage

  20. An automatic data acquisition setup allows for a faster sample rate. Elongation Voltage Output Multimeter Multimeter Resistance Output

  21. Cycling of 20% KetJen Sample

  22. Hysteresis of 20% KetJen Sample

  23. Equation used to program Arduino

  24. Minimum Goals for Strain Sensor Prototype Minimum Requirements: MC Sensor Text Output: Strain vs. Resistance Characterize sample Create Equation For Samples 3. Calibrate sensor for final design.

  25. Circuit for Strain Measurement Prototype Microcontroller Amplifier Multiplexer

  26. Glove for Final Design Final Design: Output: Dynamic Graphical Representation of Strain vs. Resistance Bread Board Arduino Multiplexer Amp MC

  27. Structure of Carbon Black Filled Rubber Composites Matrix Cross-Linked Rubber Sticky Hard (SH) Glassy Hard (GH) Amplifier Multiplexer Carbon Black YoshihideFukahori. Current Topics In Elastomer Research (2008).

  28. Super-Network Under Strain Amplifier Multiplexer YoshihideFukahori

  29. Carbon Black Affects Curing Time Amplifier Multiplexer

  30. Microstructure and Time Dependence of Conductivity • Observed a decrease in conductivity over time for some samples. • Crosslinking proceeds over time. • Tests for future work: • Rheometry • Mechanical Testing • Time-dependent environmental effects • NMR • FTIR Amplifier Multiplexer

  31. Our System can Complement Traditional MoCap Systems

  32. Our System can Provide Joint Motion Feed Back Loops Occupational Therapy Sports Therapy Ergonomic Training and Monitoring

  33. Cost Analysis of the Sensor Ketjen Carbon Black $25.07 Per Pound Polyurethane Rubber $5. 38 pound (retail) Assume a standard markup of 100 % = $2.69 pound .016 pounds carbon black + .43 pounds rubber= 25 Sense-on Sensors Materials Cost of sensors is 6 to 12 cents Off the Shelf Electronics ( resistors, leads) << $1

  34. Cost Propagation using an Analogous Industry http://www.ic.gc.ca/cis-sic/cis-sic.nsf/IDE/cis-sic32621cote.html

  35. We would Like to Thank… 35 -Mike and Matt -David Bono -Forest Lau -3.042 Staff

  36. Any Questions? 36

  37. Complete Circuit Design MC

  38. Normalization of Data

  39. Bubble Removal with Vacuum Before Vacuuming

  40. Bubble Removal with Vacuum Before Vacuuming During Vacuuming

  41. Bubble Removal with Vacuum Before Vacuuming During Vacuuming After Vacuuming

  42. Comparisons of Processing Techniques

  43. Comparisons of Processing Techniques

  44. Volume percent and particle size calculations Using Ketjen Carbon Black Surface area: 1400 m^2/g r ≈ 2nm assuming randomly oriented hemi-spherical particles Density of graphite ≈ 2.15 g/cm^3 4.5 g CB / 0.85 cups polymer ≈ 1.04 vol.-% ≈ 5 area-%

  45. Failure vs. Hole Radius Size

  46. Increase in Bubble Size Under Vacuum

  47. Porosity Characterization of Carbon Filled Elastomers 10X 200X MC Voids Seen Under Confocal Microscope

  48. Dispersion Kneader MC

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