Process Capability vs Process Performance - Understanding the Practical Difference

It is commonly said that we are to use Cp and Cpk to represent “short term” variation and Pp and Ppk to represent “long term” variation. Although this definition seems simple enough, there is considerable confusion in the industry regarding how these two sets of indices differ and precisely when to use one versus the other.

Industry expert Jerry Schmidt will be Presenting on Tuesday, July 21, 2015, join us to gain a practical understanding of when to use each and how to interpret the difference.

Description :

The most common method for a customer to communicate quality requirements to a supplier is through the use of a capability index. Cp/Cpk and Pp/Ppk are the indices most commonly used. These indices compare the product specification, known as the “Voice of the Customer”, to the process width, known as the “Voice of the Process”. Attendees will learn the mathematical difference between these two sets of metrics.
The presentation will also include a brief overview of variation and basic statistics as well as individual and moving range (I-MR) control charting, both critical prerequisites to gain an advanced understanding of process capability.

Areas Covered in the Session :

• Mathematical understanding of Cp/Cpk & Pp/Ppk
• Basic variation and statistics understanding
• Individual & Moving Range (I-MR) charts fundamentals
• Knowledge of why both Cp/Cpk & Pp/Ppk are needed
• Practical application of capability indices
• Common pitfalls and misunderstanding

Who Will Benefit:

• Design Engineers
• QA/QC Engineers
• Manufacturing Teams
• QA/QC Managers
• Process Engineers
• Research & Development Teams
• Everyone involved in specifying or interpreting customer requirements where capability indices are used

Please click here for more details