156B Week 5

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

• • Need mock up testing for lighting

    • Use current camera and cardboard mock up of the housing

    • Test in a dark room to simulate amount of light at depth

  • Need to test Camera with mounts.

  • Fabrication of the Housing

    • Welding

    • Machining

  • Test of camera in housing by shoving into sand.

Accomplishments from Previous Week

• • Ordered Materials

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

    • Subconn wet mate and accessories needed- Curtis

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

  • Completed 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

• • Completed proof of concept presentation- all

    • Presented on Monday

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

• • Order/purchase

    • Camera- Jonathan

    • Vibration dampening mounts- Vicki

    • Lighting- Vicki

  • Speak with Tom about welding the housing, tip, and lid- Curtis

  • Redesign for housing, open on top, easier tip replacement- Curtis

  • Complete CAD assembly for all components, including adapter to 4 in round pipe- Juan

  • Complete a first draft of the final report- all

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

Waiting on meeting: Monday 4/27/15 12:30 pm

• • Determine the tip angle and find how much the system will be deviated due to the shearing force, show deviation as a function of tip angle.

    • we will make a matlab code to define deviation as a result of the expected force, mass, and angle of the tip.

  • Use a double o-ring for an extra safety factor on all seals.

    • We will add another o-ring to the lid.

  • Consider opening the housing on top instead of the bottom.

    • Curtis will provide an alternate design model

  • Consider design of the adapter to reduce risk of failure, look at stress concentration on bolts

  • Clarify that the vibra-core system is using an open un-obstructed pipe to ensure access for the Ethernet cable

  • Go ahead and buy the sapphire

  • Consult with instructor about buying or making the flexure mounts.

  • Camera, find out how much light is needed, depend on f-stop, sensor quality/size, shutter speed.

  • Look at Isosensitivity and how this might affect our camera

  • Make a list of camera options with pros and cons (resolution is more important)

  • Contact instructor to ensure solid or hollow tip ask about threading and thickness of steel.

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

Waiting on presentation comments/questions on Monday 4/27/15 4pm

• • Make the flexures out of flex-steel

  • Talk to Nick Busan about getting access to a shaker table.

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

Waiting on presentation comments/questions

Risks and Areas of Concern

Resources or Information Required but not Available

Schedule

• • Describe upcoming milestone

  • Update Gantt chart.

Budget (list amount spent and amount remaining)

Progress on Report and Webpage