156B Week 8

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

• • Top of aluminum plate-- done machining

  • Still have to machine the sides of aluminum plate

  • Final design of machine complete

Accomplishments from Previous Week

• • All major parts have been ordered and should be in by this week

  • Began the process of machining aluminum plate

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

• • Complete machining/assembling the whole machine- all

  • Set up a time for next week for ATA to bring their DAS to UCSD to test- all

  • Fix any kinks within the system after testing- all

  • Design/machine back of fixture plate- Sam

  • Machine/assemble frame (especially waterjet tabs)- all

  • Impactor design finalization + machine- Troy

  • Label tubes, tabs, etc. for frame + assembly instructions- Leighy

  • Impact tips design + manufacture (pending fixture plate final mass) - Roy

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

• • Fixed vs. Pinned-- buckling analysis

    • Fixed-- 4x more stiff

  • Use the cut list to figure out beam length

  • Final presentation should included dimensioned CAD figures

  • Suggestion from Mike Pogue-- Hole drilling

    • Align in assembly, punch, drill press

  • No nylock per Jeff Kowtko's request

  • Basic rubber with locknut feet

  • Secondary strap is a priority safety item

  • Should have a discussion that addresses safety items in final report

  • Wants Belleville springlock washers for the type of washers

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

• • Add more detail to report

    • Annotations, figures, analysis detail

  • Make sure to add names for each task under "Goals for Next Week"

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

• • No comments so far

Risks and Areas of Concern

• • Time availability to test

    • We can't test without ATA's DAS

    • Setting up times that match both schedules is difficult

    • Not a lot of time remains to fix problems with our machineby week 10 after testing

  • Ensuring placement of fixture plate is repeatable on foam

    • impact velocity of impact head will be different (changes pulse amplitude)

Resources or Information Required but not Available

• • None-- ATA is very helpful in providing any resources/info we need

Schedule

• • Upload second draft of report by Friday midnight

  • Update Gantt chart.

  • Presentation Monday

  • Accomplish goals for this upcoming week (see above)

Budget (list amount spent and amount remaining)

• • Got our budget increased from $1500 to $2200

  • Spent: $1819.17

  • Remaining: $380.83

Progress on Report and Webpage

• • Report with instructor/TA revisions was uploaded by Friday midnight

  • Second draft of webpage for this upcoming Friday is in progress

  • Second draft of report for this upcoming Friday is in progress