156B Week 5

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

• • Fabrication and testing

Accomplishments from Previous Week

• Flow Meter

  • Fan Code 

  • LCD Code 

  • Transducer code 

  • Add USB data output 

  • Circuit diagram 

• Sewing

  • Attach zipper to vinyl 

  • Test anti-tear sewing methods 

• Hospital bed (Heja)

  • Bought bed and mattress from surplus store

• Report

  • Applicable Standards 

  • Report 1st Draft

    • Analysis of end plates and poles FEA 

    • Catenary analysis of nylon support structure

    • Add Catenary simulation to proof of concept presentation 

  • Proof of concept presentation outline 

• Website

  • First draft of website

    • Sponsors

    • Update background

    • Update objectives

    • "How it works" summary

    • Photos of current frame

    • List of Deliverables

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

In Progress / Done

• • • Flow meter/pressure transducer 

    • Documentation (Tim, Cameron) 

    • Sewing

    • Nylon strap mesh (Scott) 

    • Neoprene seal (Scott) 

    • CAD lower frame (Cameron)

    • Vacuum System

    • Buy 3 way valve and adapters for hoses and flow meters (Heja)

    • Report

    • Organize CAD drawings for report (Cameron)

    •  "Decision Justification" continue outline (Heja) 

    • Abstract (Heja)

    • Executive Summary (Heja)

    • Chapter 2: Description of Final Design Solution (Tim)

      • Final Design Solution with brief review of requirements (Tim)

      • Figures/Drawings (Cameron/Tim)

    • Chapter 3: Design of Key Components

      • Internal Frame (Scott)

        • CAD Figures (Cameron)

      • Fabric (Scott)

      • Flow meter/pressure transducer? (Cameron)

        • CAD Figures

    • Chapter 4: Prototype Performance (Tim/Cameron) 

      • Hold pressure test? Postpone until week 7.

    • Chapter 5: Design Recommendations and Conclusions (Tim)

      • Changes to zipper for production design 

    • Format Report (Cameron)

    • Upload Report (Cameron)

• • Proof of Concept Presentation

    • Add Catenary simulation to proof of concept presentation (Scott)

    • Website

    • First draft of website (Cameron)

      • Home Page

        • Sponsors

        • "How it works" summary

        • Photos of current frame

        • List of Deliverables

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

• • Approval of progress

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

• • Use catenary equation to create a simulation for the nylon tie down straps.

    • Recalculate bending equation with fixed ends

    • Created matlab simulation with equation to simulate behavior and provide forces on bed

    • Calculate bending/breakage of acrylic

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

• • Zipper not as airtight under pressure as expected

  • Tearing at the seams

Resources or Information Required but not Available

• • Bed (Arrives Wednesday)

Schedule

• • Describe upcoming milestone

  • Update Gantt chart.

Budget (list amount spent and amount remaining)

• • $984.21 Spent

  • $4515.79 Remaining

Progress on Report and Webpage

• • Select sections of first draft of report done

  • Website home page revised to match report