156B Week 4

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

• • Pole Requirements

    • Between 1.8-3 meters

    • Sponsor said extension mechanism can be twist lock, push button, or pin

    • Should be able to withstand 90-180 Newtons of Force

  • Vibration Motor

    • New Solution: Slide Hammer

    • Sponsor said that we should omit vibration motor and implement slide hammer

  • Frame

    • Prototype Construction Underway

  • Capture

    • Image capture might be difficult due to the random levels of water clarity 

    • Sponsor stated that video might be better idea to allow capture of specific frame when water is clear

  • Testing Condition Updates

    • Sponsor Stated that a Jon boat might be used instead of kayak

    • Sponsor Stated that testing will most likely occur with teams of two people

    • Prototype Testing will occur on Friday 5/1

Accomplishments from Previous Week

• • Order Placed for Delrin, Drawer Slides

  • Order Placed for Waterproof Light, 2nd Camera, 2nd Case (Caitlin)

  • Order Placed for Sample End Caps (Denny)

  • Requested Aluminum from Metal Supply (Joshua)

  • Impact on Society (Isabel)

  • Finish Readjusting CAD model (Joshua)

  • Redo Linear Slider Analysis (Justin)

  • Look into different types of viable collapsible poles (Denny/Isabel)

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

• • Analysis:

    • Slide hammer on Pole (Denny/Isabel)

    • Camera Mount (Caitlin)

    • Welding Aluminum (Josh/Justin)

  • On Kayak Testing to Occur on 5/1

    • Finding a Suitable Pole (Denny/Isabel)

    • Finish Prototype Frame (Justin/Joshua)

      • Design Finished by Tuesday 4/25

      • Manufacture from Wednesday 4/26 to Thursday 4/27

      • Integration: Thursday Evening

  • Sections of Report due on Friday 4/28

    • Applicable Standards (All)

  • Get Started on Proof on Concept Presentation (All)

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

• • Sponsor Stated that a Jon boat might be used instead of kayak 4/17

  • Sponsor Stated that testing will most likely occur with teams of two people 4/17

  • Sponsor Preferred Slide Hammer in place in Vibration Device 4/17

    • Team has decided to omit Vibration Device at the current time

  • Sponsor Stated that when foot is removed after taking a sample the sediment would sometimes slide out due to lack of sealing 4/24

    • Team is brainstorming solutions such as method of draining seawater from sample tube to decrease weight of sample before sealing

  • Sponsor has identified location for testing of sampler device - Liberty Station NTC Park, the north end has a boat launch with sufficient sediment 4/24

  • Recommended Go-Pro with 360 Degree instead of multiple cameras 4/17

    • 2nd camera was already bought

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

• • Should test/analyze scooping mechanism on actual algae to observe is mechanism is adequate for the job 4/19

    • Testing will be done on Friday 5/1

  • Slider analysis to determine if feasible 4/19

    • Try to make slider as big as possible

    • Try to make sampler weight in water as close to 0 N as possible

    • More slider analysis was performed and design was updated

  • Recommended using Delrin-AF for Slider 4/19

    • Delrin was purchased

  • Recommended Camping collapsible elastic poles 4/19

    • Ex. Collapsible Aluminum gun cleaning rod 

    • No Twist Lock Mechanism restriction was lifted which expanded range of usable poles

    • Poles with Similar Collapsing Mechanism to the example Collapsible Aluminum gun cleaning rod as well as poles that expand/collapse with twist lock will be tested

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

• • Production of Prototype is being rushed

    • Welding Aluminum will have to wait for another time

Resources or Information Required but not Available

• • N/A

Schedule

• • On field testing on 5/1

    • Prototype should be complete

  • Applicable Standards due on 4/28

  • Design Proposal Presentation on 5/3

  • Update Gantt chart.

Budget (list amount spent and amount remaining)

• • Amount spent: $298.43

  • Amount remaining: $701.57

Progress on Report and Webpage

• • Project Management Up to Week 4 Complete on Webpage by 4/26

  • Sections of Report Complete by 4/28

    • Background

    • Review of Existing Solutions

    • Statement of Requirements

    • Deliverables

    • Title page

    • Appendix with Individual Component Reports

    • Impact on Society

    • Applicable Standards