Very nice clean interface. Do you plan to update to MSA 4th edition as well? Your good work would need only a couple of tweaks as the 4th edition does more clearly differentiate between Product and Process GR&R and acceptable % and also modified the 0-30% rule.
Capability comparison and rationale demonstrated that 0-30% error has a neglible effect on Ppk/Cpk estimates. It was noted that capability percentage uses 30% as derived from σ; when the σ² (variance) is used, the maximum is 10%. Over 30% the effect on accept/reject decisions is almost exponential. (Appendix B, Page 199).
Thanks!
Capability comparison and rationale demonstrated that 0-30% error has a neglible effect on Ppk/Cpk estimates. It was noted that capability percentage uses 30% as derived from σ; when the σ² (variance) is used, the maximum is 10%. Over 30% the effect on accept/reject decisions is almost exponential. (Appendix B, Page 199).
Thanks!
I have in plan to add on the form calculation of PV from historical variation informations (Pp). See page 121. Also calcualtion described in appendix B will be added. Thans for your proposal.
What you mean under 0-30% rule? GRR criteria all the same as in MSA 3rd version, right? Page 78.
Form update will be made in one month.
Regards