156B Week 6

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

• • Did tests on mouse brain sample last week

  • New nozzle is almost done being manufactured, will be tested on Thursday or Friday

  • Another new design will be made this week (two-part design with channels)

  • CFD analysis on various two-outlet designs

Accomplishments from Previous Week

• • Microscope test on organic sample using reference 0.5mm carbon fiber needle

  • New Tip designs (multi-layer manifold with multiple outlets)

  • Machined 30% Carbon reinforced PEEK nozzle that splits flow into two streams

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

• • Finish testing on 0.2mm slot nozzle (Everyone)

  • Finish machining and testing on Tip designs (Dylan for machining and everyone else for testing)

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

• • Tristan (5/8/18, in person)

    • Two layer tip design

      • New design in progress

      • CFD simulation in progress

      • Use the brian sample which does not charge as much as gold one before

    • Use one big piece to replace the role of carbon fiber needle

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

• • (5/2/18, in person)

    • Possibility of increasing number of vacuum pumps?

    • No, it is not possible to add more pumps to the microscope

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

• • Prototyping will be a huge advantage to getting results (5/4/18, via email)

• Work on making eye contact and speaking clearly and audibly while presenting (5/4/18 via email)

Risks and Areas of Concern

• • Difficulties in machining

    • Two layers assembly requires high precision

    • High risk in leaking

  • New manifold does not converge flows and not improve the result

Resources or Information Required but not Available

• • N/A

Schedule

• • Describe upcoming milestone

  • Update Gantt chart.

Budget (list amount spent and amount remaining)

• • PEEK, $200

  • Machining at CRMS, ~$400 (waiting for exact quote from Bob)

  • Grade 2 Titanium,  1 inch wide, 1 ft long, 1/4 in thick, ~$43 (McMaster)

  • $4357 remaining

Progress on Report and Webpage

• • First draft report finished

  • First draft team website finished