Week 8

Week 8: Progress Report

Team 10 Members:

Shom Bhandari Nobuto Ishii

Brian Mckenna Tomo Yamada

Overview of Status of Analysis, Design, Fabrication, Tests, etc.

All required materials have been purchased and recieved.
Injector needle TU interface adapter is being machined
Overflow sensor final design has been completed.
Labview program tested using overflow sensor feedback.
- Although this is an incomplete system, it functions adequately.
T-core box is fixed and picked up from the sponsor on Feb. 27

Accomplishments from Previous Week

Final Overflow Sensor Design

- “Jagged” edges were minimized by folding Cu layers, but effectively doubling the layer size of these sensors. Poor edges were minimized to prevent shorting during operation.
- Low profile fabrication technique discovered by layering Cu+Polyimide, then cutting careully with razor over smooth acrylic surface.
- Also discovered that another layer of Polyimide at the bottom created a sticky sensor, and seeled the sensor from water traveling underneath.

Final Design is a “sticker sensor” that can be applied to the surface of the TU.
Si adhesive from Polyimide double sided tape to attach the sensor onto the TU.

Labview Design

Goals for Next Week (list names after each item). Use specific and measurable objectives.

Test: got delayed from power supply failure of T-core box. See week 7 for the procedure
Optimize/ Improvements:
- Detachable overflow sensor (if time may spare) (Tomo, Nobuto)
- debug any software glitch (Brian, Shom)
  - fix the time on the pump control system

Sponsor Comments from Last Meeting and Actions Taken to Address these Comments

Acquired recommendations to finalize project:
- Any plastic bottle will do, just make it presentable and functional.
- Important to get DUT temperature limiter working with system, to prevent future catastrophic DUT events.
Most of the materials are purchased and in progress of assembling. Tube coupling for 1/16" to 1/32" is still needed though.
T-core box's power supply has failed. The Voltage reading of the Power supply read 148V, which is the half of the power, thus T-core box was unable to run.
#7 channel RTD sensor has failed, for supplying the power to DUT too long without having the heat sink on the DUT. DUT must be cooled off or it will destroy the DUT even though only 10W is supplied to DUT

Instructor Comments from Last Meeting and Actions Taken to Address these Comments

Recommendation to fabricate tube coupling to be made in the Machine Shop with help of Thomas Chalfant or Isaiah Freerksen.
Get T-core box as soon as possible.
Alternative inexpensive pump has not been purchased nor tested for the application of our project. There is no need to do this, for the pump was acquired at a desired price.

Risks and Areas of Concern

Water distribution on DUT is uneven. The overflow sensor is triggered before water is equally distributed over the DUT.
Failure of T-core box delayed our schedule by a week. Hopefully, the testing will go smoothly
We have only one RTD sensor left to work with. If this fails, it may cause a delay

Resources or Information Required but not Available

Schedule

Week 8

Week 9

Upcoming milestones

Updated Gantt chart

Budget (list amount spent and amount remaining)