B
Blaest
Can someone give me a hint please..
Conducting a MSA, evaluating the results:
• A&R, GRR Variation related to TV (Variation)
• A&R, GRR Variation related to Tolerance
• ANOVA, GRR related to TV (Variation)
• ANOVA, GRR related to TV (Variance)
The above methods give me way different GRR values, and I do not know how to handle this!
I do understand that ANOVA is preferred above A&R
I do understand ANOVA, TV related to Variation is not additive
I do understand ANOVA, TV related to Variance is additive
I do understand a good measurement system should be GRR<10%
Example:
1000mm +/-10
TV=1,085
ANOVA, Variation related to TV: GRR=27,9%
A&R, Variation related to Tolerance: GRR=9,2%
According to ANOVA the variation is too high, but compared to A&R it is less than 10%
Why should I not use this measurement system as the Variation related to Tolerance indicates?
Conducting a MSA, evaluating the results:
• A&R, GRR Variation related to TV (Variation)
• A&R, GRR Variation related to Tolerance
• ANOVA, GRR related to TV (Variation)
• ANOVA, GRR related to TV (Variance)
The above methods give me way different GRR values, and I do not know how to handle this!
I do understand that ANOVA is preferred above A&R
I do understand ANOVA, TV related to Variation is not additive
I do understand ANOVA, TV related to Variance is additive
I do understand a good measurement system should be GRR<10%
Example:
1000mm +/-10
TV=1,085
ANOVA, Variation related to TV: GRR=27,9%
A&R, Variation related to Tolerance: GRR=9,2%
According to ANOVA the variation is too high, but compared to A&R it is less than 10%
Why should I not use this measurement system as the Variation related to Tolerance indicates?
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