156B Week 3

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

• • Micrometer setup should be fixed

    • Will test with bone samples this upcoming week

  • Prototype fabricated

    • Adjustments need to be made in order to implement into system and test

• Desiccator design decisions made

Accomplishments from Previous Week

• • Fabricated an aluminum prototype

  • Spoke to Tom Chalfant

    • Helped the team fix the micrometer inaccuracy

      • Serves as a quick fix, while we contemplate linear positioning methods

    • Provided us with a potential positioning system (Owis-Staufen Product)

      • May implement into system, making use of an encoder for precise measurements

• Design decision on desiccator: acrylic, drawer system for samples and desiccant

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

• • Prepare bone samples to test fixed Micrometer Setup and consistency of samples (Ivan)

  • Finalize Preliminary Design of Dessicator (Brandon)

  • Finish fabrication adjustments to jig prototype for testing (Chris)

  • Order acrylic for desiccator (Chris)

  • Adjust Gantt Chart (Salem)

  • Research more in-depth specifications/current lab models of dessicators (Salem)

• Investigate Impacts on Society through four scopes (Team)

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

• • Potentially using Nylon Set Screws

  • Can’t make major changes to current diamond saw system and equipment (property of Meyers lab)

    • Contemplating incorporating our own Removable Jig Mount with Linear Positioning System

  • Material: Aluminum is susceptible to rust in the long run

    • Coating for Aluminum?

• Although we’ve solved issue of handling irregularities, must consider maintaining all cuts parallel

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

• • Speak to Tom about getting the jig setup opened up to see what’s the problem with the micrometer

    • Tom was able to open up the housing and current works now, just a little stiff.

  • Spoke to Chris Cassidy about dessicator assembly.

    • Suggested that cohesive acrylic glue would provide a strong welded bond and that silicon sealant should be used after the bond.

  • Also suggested using a jigsaw type connection between acrylic walls to prevent implosion due to vacuum.  

Risks and Areas of Concern

• • Constructing a design that can maintain vacuum in the desiccator and has fewest penetrations in the acrylic.

  • Method of compatibility between separate dessicator compartments

  • How to assure prevention of damaging samples within dessicator

• How to prevent water from damaging the slider if we use one with electronic automated abilities.

Resources or Information Required but not Available

• • N/A

Schedule

• • Finalize Dessicator Design

  • Test Micrometer Setup

Budget

• • Amount spent: $37.05

  • Amount remaining: $962.95

• Major purchases still needed: Acrylic, Base slider, Keypad and LCD display (Possibly)

Progress on Report and Webpage

Report

• • Sections Started from last week

  • Fixing up Title Page for aesthetic appeal

  • Working on Impacts on Society

Website

• • Uploaded CAD files of current jig design

  • Budget Sheet updated

• Multimedia updated