156B Week 3

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

• • Build and assemble initial prototypes and various features

  • Develop test frame

  • Acquire data acquisition system.

Accomplishments from Previous Week

• • Purchased raw materials.

  • Autocad drawings of parts to be lasercut.

  • Preliminary assembly and mock-up of prototypes.

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

• • Finish prototypes and test frame.

  • Acquire DAS and strain sensors. (waiting on Steve Roberts)

  • Begin testing and collecting data for different prototype/features.

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

• • Sponsor expressed interest in purchasing a 3D printer.

    • Performed quick research into various brands and pricing.

    • Alonso has good experiences with Robo 3D, and is below $800. Robo 3D is also headquartered nearby UCSD, and may be able to assist with any issues that arise.

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

• • 4/11 (After Design Proposal Presentation)

    • Look into using load cell instead of a strain gauges to get "direct measurements instead of an indirect.

    • Look into materials lighter than acrylic (balsa wood)

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

• • 4/11 (After Design Proposal Presentation)

    • If we can't contact Steve, try Nick for getting a DAS

    • Accelerometers or load cells may be more effective than strain gauges

Risks and Areas of Concern

• • Prototype materials

  • Potential failures in test setup (noise, systemic error, etc.)

Resources or Information Required but not Available

• • DAS from Steve who has been out sick all week.

Schedule

• • Develop prototypes and test them against other prototypes

  • Potential second test set up for validation

  • Update Gantt chart.

Budget (list amount spent and amount remaining)

• • Spent: $72.49 - Acryllic, foam core, etc. 

  • Remaining: 

    • TBD - 3D printer? 

    • Strain sensors? 

Progress on Report and Webpage