27+Taguchi_Loss - TAGUCHILOSS TAGUCHILOSS TAGUCHILOSS...

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TAGUCHI LOSS TAGUCHI LOSS
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TAGUCHI LOSS TAGUCHI LOSS AN EXAMPLE ON TAGUCHI’S QUALITY LOSS FUNCTION AS IT RELATES TO PROCESS SELECTION. Taguchi's quadratic loss function is given by L(y) = K(y-m) 2  , where, K = A/Δ0 2  , A = cost of each unit returned Δ0 = (range of process variability)/2 = (USL - LSL)/2 m = target value (ideal) y = individual value measured on a product Let A = $100, Δ0 = 2, m = 85. Then, K = 100/(10/2)2 = 4 and L(y) = 4(y-85) 2
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TAGUCHI LOSS TAGUCHI LOSS Let the quality statistics according to the existing process be  given  in  the  table  below.  This  is  based  on  50,000  units  produced. Range % in the Range # in the Range Avg Unit Loss Total Loss for the Range($) 78 – 81 10 5,000 130 650,000 81 – 84 20 10,000 32 320,000 84 – 87 40 20,000 10 200,000 87 – 90 20 10,000 58 580,000 90 - 92 10 5,000 148 740,000 Total 100 50,000 2490000 Therefore, according to the Taguchi's loss function we have  $2,490,000 loss due to lack of quality.
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This note was uploaded on 10/25/2011 for the course EIN 4401 taught by Professor Staff during the Fall '08 term at University of Florida.

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27+Taguchi_Loss - TAGUCHILOSS TAGUCHILOSS TAGUCHILOSS...

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