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Tag: Lean

Shewhart-Deming Cycle (PDCA Concept)

Posted in Lean Six Sigma


PDCA cycle concept first introduced by Walter Shewhart, an engineer who worked at Bell Laboratory since 1920 and one of the mentors Demings. So in the end is often called the Deming PDCA cycle, Shewhart Cycle, since Deming popularized it.

PDCA cycle is the engine that focuses on manufacturing process improvement.Plan-Do-Check-Action is a basic improvement methods commonly used in the production process and an overall management philosophy.

Recommended Bibliography for Reference Quality Improvement

Posted in Improvement, and Lean Six Sigma

1. STATISTICAL METHODS FOR QUALITY IMPROVEMENT, Hitoshi Kume, Association for Overseas Technical Scholarship, ISBN 4-906224-34-2 C0034, 1985 (1st published) – Good basic book on the methods of quality improvement. We handed out thousands of these at FPL. Has one of the best descriptions of process improvement steps wrapped up into the QC Story (Chapter 10).

2. OUT OF THE CRISIS, W. Edwards Deming, MIT Center for Advanced Engineering Study, ISBN 0-911379-01-0, 1991 (14th Printing) – Still probably the best overall treatment of the late Dr. Deming’s philosophy and practice. Get used to clipped sentences and other funny writing habits, though. It’s best to warm up to Deming by reading the next reference first.