156B Week 5

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

• • Presented Proof of Concept Presentation to Professors, Sponsor, and Class

  • Created few iterations of Force Measurement Mount Adapter with correct alignments

  • Talked with sponsor about pricing of components and places for fabrication

    • Display Panel, Adapter Fabrication, etc.

• Performed heat analysis on DUT mount to show SLK doesn't get heated with DUT

  • Presented in Proof of Concept Presentation

  • Ultem Fabrication Procedures

Accomplishments from Previous Week

• • Improved the mount design for force test fixture (CAD Design)

  • Cost analysis on various handheld displays

    • Compatible with the Finalized Load Cell Choice

      • Searched for adapters to make display compatible

  • Performed Heat Analysis of DUT fixture

    • Used bottom heating block as heat source at steady state temperature

  • Looked into the electrical circuit behind controlling the DUT and RTD

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

• • Sam

    • Finalize Handheld Display

      • Look into final cost

    • Improve on Cartridge Heater Options with new requirements

      • Faster and more accurate heating

  • Look into S-Beam Load cell mounting

    • Threaded or Clearance Hole?

  • Damon

    • Look into possible RTD's that would work with our requirements

    • Research about which microcontroller and MOSFET would suit our needs

    • Work on the electric circuit design

  • Heater selection

  • Daniel

    • Improve DUT Adapter

      • Making it less material for better heat transfer

        • Increase rate of heating by stripping unnecessary material

    • Look into tolerances for Cartridge Heater

  • Richard

    • Improve force fixture adapter design

      • Considering the slots and holes

Sponsor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)

• DUT

  • Heating Accuracy

    • +/- 3 C

  • Heating Time

    • <10 seconds

      • ~5 seconds would be ideal

  • Set Screw for Heater to hold in place

• Force Test Fixture

  • High cost for display is ok

    • Need to ensure ease of use for client

  • Look into Misumi Hole Shaft Tolerances for screws and fits 

• Sent few images and files for mounting

• Put us in touch with various manufacturers

Instructor Comments from Last Meeting and Actions Taken to Address these Comments  (indicate date of comments and if via email or in person)

• • Try to find chip wattage to get respective heater wattage

  • Look into ANSI Fits & Tolerances

    • For Dowel Pins Alignment and other adapter fits

• Research Programmable Logic Controllers (PLCs) for circuit for DUT

• Find ways to maximize heat transfer

  • Set screw will leave gap for air

    • Try to minimize thermal loss

  • Design Guides for Mounting Cartridge Heaters

Comments from Other Students in the Class (indicate date of comments and if via email or in person)

• • Pacing of speaking while presenting

    • Organize thoughts to improve flow

• Make better cost estimates for presentation

  • Factor in machining and labor costs

• More discussions on why certain iterations of adapter didn't work

Risks and Areas of Concern

• • DUT

    • Safety Risk

      • Incorporate a kill switch

    • Ensure mounting doesn't conduct heat generated from DUT

      • Don't let the SLK head heat up from generated heat

Resources or Information Required but not Available

• • N/A

Schedule

• • Update Gantt chart.

Budget (list amount spent and amount remaining)

• • N/A

Progress on Report and Webpage

• • Updating Webpages

  • Drafting Report