1. BACK UP P09045: Membrane Characterization Test Stand
1/2/2019 1

2. Engineering Specs Engineering Spec # Needs # Metric Unit Ideal Values
Resolution
Importance 1
1,2,3,4,5
Data - Load N
N/A
+/- .001
High 2
Data - Displacement
mm/mm
+/- .1 3
7,14
Weight lb 15
Low 4
7,9,15,16
Initial Assembly
Time
Medium 5 10
Cost
Dollars
1500 6
11,12
Cycle Time
minutes 7
7,8,9,12,13,15,16
Repair time
hours 8
Test Stand footprint
m^2
0.5 9
Edge Effects
1,3,6
Membrane Preparation Time 30 90 11
1,3
Sample Geometry
mm^2
781.25
+3000
Denotes a Maximum Value
P09045: Membrane Characterization Test Stand
P09045: Membrane Characterization Test Stand
1/2/2019 2

3. Engineering Specs Continued
Needs #
Metric
Unit
Ideal Values
Marginal
Importance 1
1,2,3,4,5
Load sensor resolution
mV/lb 50 70
High 2
Displacement Strain Field
pixels/pixels
200 3
7,14
Weight
lbs 10 15
Low 4
7,9,15,16
Initial Assembly
hours 6
Medium 5
Cost
dolars
1500
11,12
Cycle Time
minutes 7
7,8,9,12,13,15,16
Repair time 8
Test Stand footprint
m^2
N/A 9
Edge Effects
1,3,6
Membrane preparation 30 90 11
1,3
Sample Geometry
mm^2
781.25
3225.8
P09045: Membrane Characterization Test Stand
P09045: Membrane Characterization Test Stand
1/2/2019 3

4. Software Diagram Get User Inputs Move One Increment
Measure and Save Load Cell Data
Take Picture
Reach Max Number of Iterations No
Program End, Proceed to Analysis
Yes
P09045: Membrane Characterization Test Stand
P09045: Membrane Characterization Test Stand
1/2/2019 4

5. Software Parameters
One increment is the smallest unit of motion the motor can move, 1.8° (Anaheim Automation 34Y1)
This may change as the moving system is assembled
Files names and/or location to store data and images
The number of load data points to take at each increment
P09045: Membrane Characterization Test Stand
P09045: Membrane Characterization Test Stand
1/2/2019 5

6. Software Flow Move One Increment
LabView communicates with the motor controller and tells the motor to rotate the amount corresponding to one increment
Measure and Save Load Cell Data
LabView measures a given number of samples from the load cell and records it to a predetermined file
Take Picture
LabView tells the camera to take a single frame of the membrane at the current displacement
Reach Max Number of Increments Condition
If the maximum number of iterations has been reached, end the program and proceed to analysis
If the maximum number of iterations has not been reached repeat from step 1
P09045: Membrane Characterization Test Stand
P09045: Membrane Characterization Test Stand
1/2/2019 6

7. Data Analysis Procedure
Calibration Image
Calculate Displacement for each Iteration
Convert Load Cell Data to Strain
Load Cell Data from LabView
Stress/Strain Data
P09045: Membrane Characterization Test Stand
P09045: Membrane Characterization Test Stand
1/2/2019 7

8. System Flow Diagram Deformed Membrane Data Sample Energy User Input
Obtain
Prep
Mount
Conversion
(Energy to Motion)
Useful
Motion
Deformation
Of Membrane
GUI
Run
LabView
Sensing
Log
P09045: Membrane Characterization Test Stand
P09045: Membrane Characterization Test Stand
1/2/2019 8 8