Process Capability and Process Performance are statistical tools used in engineering as a way of measuring the stability and consistency of manufacturing processes. Cpk & Ppk is used during routine production, during verification and validation builds and as a product acceptance method. This publication provides an practical introduction to the subject and is useful for engineers or those working in the manufacturing industry. It is the perfect educational and training tool.This short publication introduces the topic of Process capability and provides clear definitions of Cpk and Ppk and how they differ. It also gives an overview of how to derive a suitable sampling plan for Single Inspection attribute data and Double Sided specification for variable data. It should be noted that the internet is a wash with resources on Process Capability, this eBook offers a concise one-stop introduction.
This short ebook does not provide sampling tables for use in industry. The focus of this publication is to provide an understanding of Process Capability and Performance, and the fundamental concepts required in order to apply them. It is the responsibility of companies and organisations to derive their own sampling plans and statistical methods based on best practices and international standards.