# 230526 - Design of Experiments Flashcards

How to know if it is a full-factorial design?

2^2 = 4 runs

Interaction diagram: 2 lines

Mean effect: 1 line

if you only have the corner points, thats no proof that there’s no interaction between the effects, additional points could be

What is a regression analysis?

Determine the coefficients for the regression analysis.

with corner points you can only have linear polynomials in the regression

the function can be extended to more effects (A, B and C; or A, B, C, D and E and so on)

range of values for fatigue stresses

does it depend on the material? does it depend on the shape of the part?

What is T-Test?

What’s the goal of doing this analysis?

get a mathematical model of how the behavior of the system will be

How do you know if something has no interaction effect if you only get the corner points?

The center points may have a different shape, since the functions may not be lines.

Resolution of an experiment

Ideal resolution? How do you define the colors of each resolution level? yellow? red?

How to reduce the number of tests in order to make it more cost-effective or faster? Do the first half? the second half?

since the target is to use only a half and the number of experiments is given by: 2^a, you just need to do 2^(a-1)

(delete the one factor only interaction and replace it with the two or all factors, starting to 3?).