156B Week 4

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

• • Analysis of achievable penetration depth is finished.

  • Look into vibrational frequency of mountings for camera.

  • Need to test our mounting method for the camera and mirror on a shaker table.

  • Need to fully define our design and check with Sponsor to start ordering and fabrication on parts

Accomplishments from Previous Week

• • Checked with sponsor and found that the housing is not going to be mass produced.- all

  • Testing the more inexpensive wetmate connection failed.- Curtis

    • Machined the attachment of the wetmate to housing.

    • Used teflon tape to seal the connections

    • Tested to see if it can withstand 414 kPa (60 psi)

    • Placed withing pressure chamber overnight

    • Wet mate was not waterproof at pressure

  • Decision to pursue another wetmate solution- Subconn 13 pin round bulkhead connector with Ethernet cable- Curtis

  • Test to see if epoxy or elastomer would be better and if it works in sealing the cable splicing.

  • Added sections to the report and edit/add to previous sections- Jonathan, Juan, and Vicki

  • Looked into stabilizer mounts, found some different options-Vicki

    • Rubber mount that requires less weight

    • Custom mounting frame with a specific spring

  • Designed several mounting options to review with Sponsor and instructor- Vicki

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

• • Order Materials

    • Stainless steel square tube, .5 inch thick, 2 ft required- Vicki

    • Subconn wet mate and accessories needed- Curtis

  • Complete design of housing, window, lid, and tip on solidworks- Juan

  • Complete camera comparison report to choose a camera to purchase-Jonathan

Criteria

• • • Resolution, minimum is camera provided by sponsor

    • Frame rate, " "

    • Cost, must stay close to budget, including other purchases

    • Size, must fit inside our housing

    • Power over Ethernet cable

• • Complete proof of concept presentation- all

    • Present on Monday

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

• • Satisfying to have Penetration Analysis completed

  • Most important issue is choosing a camera

  • Move forward with designing the mounting for the camera

  • Complete full design of the project to get a full picture

  • Lighting may need to be ambient rather than directed

  • Discussed designing for an interchangeable/replaceable tip

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

• • Be more specific in progress reports

  • Check with sponsor if the housing is going to be made in mass quantity

    • If not, then it might be better to not waste our time with the more inexpensive wetmate route

    • If yes, then look into an elastomer seal for the plastic wetmates for better flexibility

  • Be careful of word choices in the report

  • Look into anti-glare windows

  • Build the stabilizer mount for the camera using spring

  • Might want to make it symmetrical as to not create a moment

  • Look into flexures

    • Mount it on the same axis of vibration, verticle

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

• • None this week

Risks and Areas of Concern

• • Access to a shaker table for testing, 60hz and 3 mm amplitudes

Resources or Information Required but not Available

Schedule

• • Describe upcoming milestone

  • Update Gantt chart.

Budget (list amount spent and amount remaining)

• • Steel tube: $

  • Steel plate: $

  • Subconn connectors and accessories: $

Remaining total of budget: $

Progress on Report and Webpage