1 Prototype Presentation Stephanie Moran, Ryan Rosario, Zachary Stauber, Bethany Tomerlin, Juan Carlos Ybarra
Dec 19, 2015
1Prototype Presentation
Stephanie Moran, Ryan Rosario, Zachary Stauber, Bethany Tomerlin, Juan Carlos Ybarra
2We modified our goals to more suitably match our application
1. Inexpensive
2. High Elongation (>10%)
3. Fast Response Time
4. Precision
• We need:• Movement through Space• Rotation • Real Time Feedback
Can act as a supplement• Reduce Errors
4
Improvements to be Made to Our System in Order to compete with existing Motion Capture Technologies
5Our Product Could Be Used to Monitor and Provide Feedback for Joint Extension
• Inexpensive
• Output of strain
• Track degenerative diseases
• Posture Feed Back Loops
• Need to reduce distractibility
6Current Processing Technique
7Current Processing Technique
8Current Processing Technique
9Current Processing Technique
Calender
10Bubbles Create Stress Concentrators In Rubber
Ippolito, M. Physical Review, 75, 224110 (2007).
11Bubble Removal with Vacuum
Before Vacuuming
12Bubble Removal with Vacuum
Before Vacuuming During Vacuuming
13Bubble Removal with Vacuum
Before Vacuuming During Vacuuming After Vacuuming
14Improvements in Processing to Help Consistency
Weighing Carbon Black Alternating Mixing Time
Optimized Measurement Set-Up
Characterized Samples, Normalized and Real Data
0 0.2 0.4 0.6 0.8 1 1.20
50
100
150
200
250
300
350
Resistance vs Extension
sample 1sample 2sample 3
Extension (in./in.)
M- O
hm
0 0.2 0.4 0.6 0.8 1 1.20
2
4
6
8
10
12
Resistivity vs. Extension
sample 1sample 2sample 3
Extension
M-O
hm-in
.
Hysteresis of Samples
0 0.2 0.4 0.6 0.8 1 1.20
2
4
6
8
10
12
14
16
18
Hysteresis
cycle 1 upcycle 1 downcycle 2 upcycle 2 downcycle 3 upcycle 3 down
Extension (in.)
M-O
hm
0 0.2 0.4 0.6 0.8 1 1.2 1.40
50
100
150
200
250
300
Hysteresis
cycle 1 upcycle 1 downcycle 2 upcycle 2 downcycle 3 upcycle 3 down
Extension (in.)
M-O
hm
Sample used in Prototype
0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 10
50
100
150
200
250
300
f(x) = 453.915509134616 x³ − 198.775426573427 x² + 95.2364976689977 x + 5.59790209790215R² = 0.998050312909082
Resistance vs Extension
sample 2Polynomial (sample 2)
Extension (in./in.)
M- O
hm
19Minimum Goals for Strain Sensor Prototype
Minimum Requirements:MC
Text Output: Strain vs. Resistance
Sensor
R = 453.9 ε 3 - 198.7 ε 2 + 95.23 ε + 5.597
20Glove for Final Design
Final Design:
MC
Arduino
Output:•Resistance vs. Strain•Position of sensor
Multiplexer Amp
Bread Board
21We plan on altering our current process to yield more reproducible samples
1. Better dispersed phase
2. Optimize void removal
Gantt Chart 22
23Conduction in the composite cannot be explained by tunneling, but can be modeled by Mean Field Theory.
e-e-
30nm
24Complete Circuit Design
MC
Normalization of Data
26Comparisons of Processing Techniques
27Comparisons of Processing Techniques
28Failure vs. Hole Radius Size