Course:MTRL466-adhesivebonding/Group2/October 7
| Project Name | Adhesive Bonding |
|---|---|
| Group | 2 |
| Current Meeting | October 7, 2011 |
| Minutes Prepared By | Mandy |
Attendees
Mandy, Shauna, Kyle, Andy and Chad
Agenda
Paint Bake
- Andy will find appropriate references for the paint bake cycle this weekend
- How should we solve the reference problem?
Adhesive Bonding
- Have found the maximum time step
- Will find maximum preliminary alpha cured
- Haven't talked to Goran, will make appt for next week
Precipitation Hardening
- Finished spreadsheet
- Have questions
Recovery
- Had meetings with Chad. Understand the mathematical model
- Made modifications to the model and it seems to be working better than before
- Find v vs T
- More sigma vs time data on the alloy at lower temperature?
Heat Transfer
- Haven't found the optimization of delta x and delta t
- How does Error Function work?
- Need to ask GM about oven specifications to find h
- Managed to find k on ASM Handbook, but no value for 6111 and 5754 wrought Al alloy.
- Need data for heat generation from adhesive bonding
- For now, we only make up a heat flux value
- Tried to plot temperature profile, but need help for writing macro
New Duties
- Shauna will be editor of report
- Mandy will be in charge of making the slides to the presentation
Future Plans
- Write summary of approaches and theories used for each model with proper references
- Teach each other on their expertise so everyone is prepared for the midterm
- Prepare presentation and midterm report
Minutes
Paint baking
- Use Shauna's paper on paint baking information
- Don't have to e specific- leave it as a soft constraint for now
- If there are materials in paper that aren't clear, we can ask GM
Adhesive Bonding
- Shauna will email Goran the thickness we should use
- % Cured
- Heat evolved- Give units in J/m^2/s
- Heat transfer guys need: qdot, kepoxy, densityepoxy, cp epoxy
Precipitation Hardening
- Assumption: it is only a function on relative function(up to peak strength)
- dfr/dt - to get non isothermal model, volume fraction depends on variable last path
Recovery
- Look at experimental data literature
- Literature research on low temperature- Can we just extrapolate to lower temperature?
Heat Transfer
- Plot Newtonian heating to model
- Work with adhesive model
- Small deltax
- Small deltat
Models
- Functioning
- Explain limitation
- How to work on obstables
Midterm Report
- Need- Faster process
- Constraint- Use aluminum material- lightweight
- Meet requirement on CAFE
- Find what number it is right now- where are you moving towards
- Why Aluminum
- Why adhesive bonding
- Site any idea that is not yours
Problem Specification
- Be specific
- Strength- secondary objective (%)
- Maximize efficiency- Objective
- Free variable
- Temperature
- heat transfer- convection, radiation
- Orientation of heating
Literature Review
- Aluminum alloy
- Paint bake cycle
- Precipitates in each alloy
- Building models- why?
- To predict , to see feasibility
Assess and design
- Models- Point where you are, point where you are going
- Can use appendix
- Leave section at the end to summarize and next steps
Last Section
- How you have met during the week to discuss progress
- How you communicated- Wiki, dropbox
- Write the report in point form as a group first