1 / 9

# Bruce Mayer, PE Licensed Electrical & Mechanical Engineer [email protected] - PowerPoint PPT Presentation

Engineering 25. Tutorial: PolyFit 1 st ,2 nd , 3 rd , 4 th. Bruce Mayer, PE Licensed Electrical & Mechanical Engineer [email protected] PolyFit for PolyMers. In ENGR45 you will learn that the production of PolyMers (Plastics) requires Chemical Reactions The polymer rcns maybe

I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.

## PowerPoint Slideshow about ' Bruce Mayer, PE Licensed Electrical & Mechanical Engineer [email protected]' - pabla

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.

- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript

Tutorial:PolyFit1st,2nd, 3rd, 4th

Bruce Mayer, PE

Licensed Electrical & Mechanical [email protected]

PolyFit for PolyMers

• In ENGR45 you will learn that the production of PolyMers (Plastics) requires Chemical Reactions

• The polymer rcns maybe

• Single ReAgent

• Multiple ReAgent

MultiReagent Reaction

• The Curing Time, t, for a Batch of certain Polymer varies the amount of Reagent, R, as shown in the Data-Table (T-Table) Below

• For this Data SetFind

• 1st thru 4th degreepolynomials thatbest fit the data

• Determine theall the polynomial’s goodness of fit byfinding J, S, and r2

MultiReagent Reaction

• Plot Each polynomialand the actual Dataon the Same Graph

• Use the Low-r2polynomials to estimate the Amountof ReAgent that willMinimize the CuringTime

• Use 2X2 SubPlot

The J values for polynomial degrees 1-4:

1.0e+05 *

2.1442 0.0676 0.0647 0.0621

The S value for this data set:

2.2477e+05

The r-sqd values for polynomial degrees 1-4:

0.0461 0.9699 0.9712 0.9724

The Best r-sqd value is for degree =

4

The amount of R (in kg) for minimum cure-time

4.8400

The minimum cure-time in seconds

897.5275