ME 488 Design of Experiments
Homework Set #5 - Solution
1. Reanalyze the data for sand erosion, Problem #2, Homework #4, by using a halffractional design. Use the AB=C configuration, where A=Car, B=Ro
CALCULATION OF EFFECTS: MAIN EFFECTS:
MAIN EFFECT = y+ y
Difference of Averages = Average of Differences
T C K
y8 + + +
y5 +
y3 + -
y2 + -
y7 + +
y6 + +
y4 + + -
y1 -
( y8 + y6 + y 4 + y 2 ) ( y7 + y5
Measurement of Fly Rod Spines
Graig Spolek
Modern fly rods
Hollow, tubular, and tapered Manufactured of carbon fiber reinforced plastic Formed by layering pre-preg (graphite imbedded cloth) around a
Solution Fly Rod Data Analysis The equation for the average or the mean is the same for both the population and the sample:
The equation for the standard deviation, on the other hand, differs for the
AdatasetfortheaveragecommutingtimefrommyhousetoPSUhasthreedifferentvariables:
differentcars(JandM),differentroutes(BandK),anddifferentweatherconditions(rainYorN).
Route
B
B
B
B
K
K
K
K
Car
J
J
M
M
J
J
Homework Problem 9.7
Problem Objective:
Statement: Given y = ax2 and that the uncertainty in a is 3 % and that in x is 2 %,
determine the % uncertainty in y for the nominal values of a = 2 and x = 0.5
EXAMPLE
TURBINE INDEX TEST
ASME PTC 18-1992
WINTER-KENNEDY METHOD RELATIVE FLOW RATE
Two Pressure Taps on Spiral Case Outer Tap: High Velocity, Low Pressure Inner Tap: Low Velocity, High Pressure Meas