156B Week 7

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

• • Came up with new brake concept (Jonathan & Kelli):

• • Bearing would be placed on center rod and mounted between rotating basket and fixed base plate. Upon reaching a high velocity, the large mass will move outward, lowering the brake towards the fixed plate.

  • Baseplate on caster wheels with lazy susan currently going through final design steps. (Annie & Yuji)

Accomplishments from Previous Week

• • Designed a new brake (Jonathan & Kelli)

  • Base plate design dimensions were modeled and finalized (Yuji & Annie)

  • Finalized list of parts to be ordered (Everyone)

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

• • Collect list of parts and put orders in (Jonathan)

  • Finish any remaining design changes needed on CAD models (Yuji & Annie)

  • Finalize brake design specifications (i.e: material, mass, measurements, angles) (Jonathan & Kelli)

  • Begin final fabrication of cart (Everyone)

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

• • Approved team to present design concept to vivarium and CAEP supervisors at meeting on 02/22.

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

• • Suggested looking into nickel plated stainless steel fasteners to address rusting

  • Suggested figuring out a way to measure the velocity at which cart rotates in wash.

  • Said that team should design the brake ourselves (finding something off the shelf for this specific function would be very difficult)

  • Safety Considerations:

    • look into tipping standards

    • drafting standards

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

• • N/A

Risks and Areas of Concern

• • Time limitations on fabrication (particularly welding)

  • Stability of cart with base plate

Resources or Information Required but not Available

• • N/A

Schedule

• • Weekly Sponsor Meeting + Supervisor Presentation (02/22) (Everyone)

  • Part Ordering and Purchasing (2/20-2/23) (Jonathan)

  • Design finalization and modifications (2/20-2/24) (Everyone)

  • Machining and cart fabrication (2/25-3/1) (Everyone)

Budget (list amount spent and amount remaining)

• • 289.65 Spent

  • 1710.35

Progress on Report and Webpage

• • Report being updated following feedback from Instructor