Preliminary Process Capability Studies

Characteristics identified in the control plan

Usually 100 pieces minimum

May be 30 if run is less

Ppk 1.67 is acceptable unless otherwise specified

Ppk Š 1.67 requires action plan unless otherwise specified

Reference AIAG Fundamental SPC Reference Manual

1.0 at spec limit

+-3 sigma = 1.67
Allows ‘flop’ within spec limit

APQP Forum Discussions

	The. Deming PDCA Cycle	QMS Implementation	FMEA Information	APQP Information
Auditing Information	8-D Problem Solving	Statistics	Error Proofing (Poka Yoke)	Brainstorming
Identifying Waste	Pull Systems	Lead Time Reduction	Planned Maintenance	Quick Setup
Discovering Change	Process Capability - Cp vs. Cpk	Histogram. Animation	Process Loop Animation	Taguchi Loss Function
		Fishbone / Cause and Effects Animation