ME345_Lecture_11 - Solution : ( b ) To do : Design a...

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M E 345 Spring 2008 Professor John M. Cimbala Lecture 11 02/08/2008 Today, we will : Review the pdf module: Experimental Design Do some example problems – Taguchi design arrays; experimental design Do C a n d y Q u e s t i o n s f o r C a n d y F r i d a y Example Given : A toy gun that shoots Nerf bullets is being designed. The engineers want to maximize the distance traveled by the bullet. Three parameters are to be varied: a = spring constant b = weight of the bullet c = diameter of the bullet The engineers decide to test 4 levels for each of these 3 parameters. ( a ) To do : Calculate how many runs are required for a full-factorial analysis.
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Unformatted text preview: Solution : ( b ) To do : Design a Taguchi array such that each level of each parameter appears twice. Solution : ( c ) To do : Now that the Taguchi design array is set up, experiments are performed, with the following results. Calculate the level averages, and determine which levels are optimum. run # a b c X (m) 1 1 1 1 5.5 2 1 2 4 6.2 3 2 3 3 6 4 2 4 2 7.3 5 3 1 2 7.6 6 3 2 3 8.1 7 4 3 1 9.7 8 4 4 4 7.2 Solution : ( d ) To do : Recommend follow-up experiments Solution :...
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This note was uploaded on 07/23/2008 for the course ME 345 taught by Professor Staff during the Spring '08 term at Pennsylvania State University, University Park.

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ME345_Lecture_11 - Solution : ( b ) To do : Design a...

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