DMAIC Measure Robert Setaputra Measure The measure phase
DMAIC: Measure Robert Setaputra
Measure The measure phase begins with the identification of the key process metrics. n Once the key process metrics have been specified, related process and customer data is collected. n
Purpose of Measure Phase To validate the data n To help the team narrowing the range of potential causes need to be investigated in Analyze phase. n
Framework Statistical Problem Business Problem Measurement Business Solution Statistical Solution
Measurement System Analysis MSA is a study to determine the extent and acceptability of system measurement n 5 Properties n ¨ Biasness ¨ Stability ¨ Linearity ¨ Repeatability ¨ Reproducibility
Gage R&R n n Repeatability & Reproducibility (R&R) Repeatability ¨ Variation that is due to the measurement device (same operator, same part, same device). ¨ Within person variation. n Reproducibility ¨ Variation that is due to the measurement system (different operators, different parts, same device). ¨ Between person variation
Gage R&R Study Design (Crossed Design) Select a set of representative parts. n Select a group of operators to measure the parts. n Ask the operators to measure for each part repeatedly. n n Ex. 5 parts, 2 operators, and 4 replicates.
Gage R&R using Minitab Gage R&R Run Chart n Gage R&R Study (Crossed) – ANOVA n Gage R&R Contribution n n Exercise: ¨ Table 5. 6 (p. 121) ¨ Table 19. 6 (p. 617)
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