156B Week 3

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

• • Jamming Analysis for Linear Slider using ABS Plastic

    • Angle at which jamming will occur

    • Force required to jam the slider

  • Method of Attaching Extendable Rod to Sampler

    • Locking Clip

  • Spring Loaded Motor Analysis

    • Looking at different motor types

  • Optimal Underwater Camera and Setup for 360 Degree Capture

    • The best underwater camera for job

    • Position and placement of camera on extendable rod to capture 360 degrees image

    • Illumination for the camera

  • Extendable Rod

    • Method of creation/design

    • Other required attachments on rod

Accomplishments from Previous Week

• • CAD for Sampler mostly complete

  • Prototype frame design mostly finalized

  • Design Proposal Presented

  • First Portion of Report

  • Obtained new sampler from Spawar & did mock sampling in the kayak

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

• • Prototypes of the different components of the Sampler should be constructed/bought/tested:

    • Camera/Underwater lighting attachments (Caitlin)

    • Visual Processing (Josh)

    • Algae Strainer (Isabel)

    • Frame/Reflective Taping (Justin)

    • Sealing Trigger Mechanism (Denny)

    • Vibration Attachment/Sediment Cutter Attachment (Joshua/Justin)

  • Analysis to be Done

    • 360 Degree Capture for Cameras (Caitlin)

    • Linear Slider Jamming Analysis (Justin/Denny)

    • Spring Loaded Motor Research (Joshua)

    • Extendable Rod (Isabelle)

    • Method of Attaching Extendable Rod to Sample (Denny)

  • Action Items:

    • Review feedback for next presentation- all

    • Impact on Society due Friday 4/21 midnight- Isabel

    • Finish readjusting CAD Model -Joshua

    • Redo Linear Slider Analysis to accommodate for friction -Justin

    • Place Order for Delrin, drawer slides, 2nd camera, 2nd case - Caitlin

    • Research pole that meets functional requirements - Isabel/Denny

      • (1) between 1.3-3 meter length (6-10ft)

      • (2) no twist lock

      • (3) needs ~ 180N (40lbs-force)

    • Request samples for caps - Denny

    • Request aluminum for metal supply - Joshua

    • Obtain Delrin Samples- Isabel/Justin

      • Eplastic thurs 11am

    • Check out Linear sliders  (Isabel/ Justin)

      • Industrial Metal Supply Thurs 11am

    • Test prototype on kayak on Marine Corps Base w/ sponsor- all

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

• • New Sampler is ready for pick up and testing, features include:

    • Bigger Sample Tube

    • Adjusted Quick Release for Sampling Tube

• Sponsor Suggested Features to work on:

  • • Slide Hammer

    • o   Suggested working on nut slide hammer mechanism to improve ease of use on kayak

    • o   Sliding mechanism that slides up and releases pin to release slide hammer

    • o   Suggested the use of Delrin for slider; said that there is no real reason to use more expensive material such as Teflon

    • o   Noted that visibility varies and that it will be a gamble whether picture will be able to be used for percent bloom

    • o   Suggested video and frame freezing instead of image capture

    • o   Went into kayak to see conditions researchers will be dealing with

    • o   Talked about vibration device to sponsor; They said they might have something we could use

    • o   Said that current slide hammer mechanism would be adequate to collect algae

    • o   Suggests that algae would be similar to spinach, could also try to get algae samples to test

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

• • Would the current scooping mechanism on the sampler created for sediment samples be adequate for scooping up/cutting off algae?(4/12)

    • Should look at other teams algae cutting analysis

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

  • Slider analysis to determine if feasible

    • Try to make slider as big as possible

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

  • Recommended using Delrin-AF for Slider

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

  • Recommended Camping collapsable elastic poles

    • Ex. Collapsable Aluminum gun cleaning rod 

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

• • The scooper mechanism on the current sampler has not been tested to see if it can scoop up all the variations in algae

    • Scooper might not be able to cut off algae and jam on it

    • Might result in massive design changes and delays if current scooper mechanism is not adequate

  • Visibility of cameras

    • will need multiple cameras placed at multiple angles

Resources or Information Required but not Available

• • Manufacturer was called for part details and pricing on Caps for samples

    • General Part info was obtained

    • Manufacturer never got around to pricing/sending part samples

Schedule

• • Prototyping construction begins this week and needs to be complete about two weeks from now

    • Might be delays due to sponsor securing a updated sampler for team

  • Update Gantt chart.

Budget (list amount spent and amount remaining)

• • $981.80/$1000 remaining

Progress on Report and Webpage

• • Sections of Report to be completed

    • Background

    • Review of Existing Solutions

    • Statement of Requirements

    • Deliverables

    • Title page

    • Appendix with Individual Component Reports

  • Project Management on Webpage up to Week 2 have been completed