I would like to know the difference - interms of methodology, formula between Preliminary process capability study PpK(widely used during PPAP submission in Automotive Industries), Capability Index Cpk & performance index Ppk.

How it is different from Short term capability & Long term capability studies being conducted during six sigma projects. Any relation???

I would like to know the difference - interms of methodology, formula between Preliminary process capability study PpK(widely used during PPAP submission in Automotive Industries), Capability Index Cpk & performance index Ppk.

How it is different from Short term capability & Long term capability studies being conducted during six sigma projects. Any relation???

Hello bkarthikeyan,

Welcome to The Cove!

Here is a good place to start (previous posts)....

What is the difference between Cp, Cpk and Ppk? (http://elsmar.com/Forums/showthread.php?t=13003)

Stijloor.

You may be helped with attached overview :

http://elsmar.com/Forums/attachment.php?attachmentid=3497

Hope it helps,

Best regards,

Antoine