Overview of Status of Analysis, Design, Fabrication, Tests, etc.
Fabricated new bags (single bag/anti-static window, double layered bag anti-static window, Tyvek)
Finalized Controlled test bed with 12 volt powered fan and four pocket weight scales
Conducted water loss testing trials
New Seal methods (roll top was effective and inexpensive)
Accomplishments from Previous Week
Determined that double-layered silk, anti-static window was the best (water loss)
Did test run with continuous water loss testing with fours bags (double-layered silk, control (silk), single-layered window anti-static bag, double-layered window anti-static bag)
Able to get additional data and graphs on vapor pressure inside and outside of silk bag
Did further mass transfer analysis on new bag water loss tests to model Darcy’s Law
Goals for Next Week (list names after each item). Use specific and measurable objectives.
Albert/Jordan: Get website updated especially the Gantt Chart
Albert: Document closely any small or big comments or suggestions made by instructor or lead sponsor during meetings
Kevin: Design and fabricate more L-shaped Noryl shading structure (4 in total)
Everyone: Work on poster and final draft of report
Sponsor Comments from Last Meeting and Actions Taken to Address these Comments
Dylan and Christian conducted outside noise tests (double-layered silk and silk bag inside polyethylene (pink) anti-static bag were all acceptable)
Todor asked for more concrete water loss test results for different bags and noise tests
Double-layered silk bag with antistatic window had overall the least water lost and lowest K value
Silk, double silk, and double silk anti-static window all had similar noise performance
Instructor Comments from Last Meeting and Actions Taken to Address these Comments
Velcro is probably among the biggest factors to water escaping as vapor from the bag
Do more testing for validity of final bag design
We conducted 5 trials and overall Double-layered silk bag with antistatic window performed the best with single-layered silk bag with antistatic window second
Do as much necessary testing that seems reasonable
Conductive silicone RTV is too expensive ($1600 for 10 oz)
Risks and Areas of Concern
• How much consistent and accurate water loss testing results we can get
• Placement of the weight scales inside the heated box
• Temperature sensor error readings for pocket weight scales will be hard to diagnose
Schedule
Finish poster and final draft of report
Update Gantt chart and final site
Budget (list amount spent and amount remaining)
Currently, we have only used approximately $700 out of the $1000 so far. $125-150 was set apart in order to fabricate eight copies of the finalized coupling bags.
Progress on Report and Webpage
Update the Gantt Chart
Added diagrams to controlled test bed
Upload Weekly Progress Report
Work on final report and poster