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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

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Presentation Transcript
slide1
Engineering 25

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

Bruce Mayer, PE

Licensed Electrical & Mechanical [email protected]

polyfit for polymers
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
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 reaction1
MultiReagent Reaction
  • Plot Each polynomialand the actual Dataon the Same Graph
  • Use the Low-r2polynomials to estimate the Amountof ReAgent that willMinimize the CuringTime
the plots
The Plots
  • Use 2X2 SubPlot
the results
The Results

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

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