W. Edwards Deming is known as the father of the Japanese post-war industrial revival. He developed the Deming Wheel (PDCA cycle) and focused on statistical process control, his famous 14 points for management, and identifying the seven deadly diseases of quality. Joseph Juran developed the Juran Trilogy for quality planning, control, and improvement. Philip Crosby emphasized defining quality in understandable terms and calculating the cost of poor quality. Kaoru Ishikawa created the cause-and-effect diagram (also called a fishbone diagram) and advocated for quality circles and emphasizing internal customers. Genichi Taguchi developed experimental design methods for parameter and tolerance design to reduce variability and improve quality.

1. Quality Management Gurus

2. Who was W. Edwards Deming
•Dr. W. Edwards Deming is known as the father of the Japanese post-war industrial revival
and was regarded by many as the leading quality guru in the United States. He passed on in
1993.
•His expertise was used during World War II to assist the United States in its effort to improve
the quality of war materials
-He got his PHD in the states in physics and math's
-Get his first employment chance in an electricity company in Chicago
-He taught physics , mathematics , statistics and quality in Japan .
* Deming is best known for his management philosophy , establishing quality , productivity
and competitive position

3. Deming focus on 5 ideas :
1. Statistical process controlling (SPC)
2. Deming philosophy
3. Deming 14 points
4. Deming Cycle (for continuous improvements)
5. Seven deadly diseases of quality
Statistical process controlling: it’s a process which aims at achieving good quality during
manufacture through prevention rather than detection .
It is concerned with controlling the process (machine) which make the product through
inspecting the machine rather than the product itself.
For example why the salesman can’t sell the same amount every month ?
SPC will answer this question by discovering and analyzing these items

4. Deming's cycle

5. Who was Joseph Juran?
Joseph Juran is an internationally acclaimed quality guru, similar to Edwards
Deming, strongly influencing Japanese manufacturing practices. Joseph Juran’s
belief that “quality does not happen by accident” gave rise to the quality trilogy

6. CONTRIBUTIONS OF JURAN:
THE JURAN TRILOGY
Juran views quality as fitness for use.
Juran Trilogy is designed to reduce the cost of quality over time.
1. QUALITY PLANNING
1. Determine internal & external customers.
2. Their needs are discovered.
3. Develop product / service features.
4. Develop the processes able to produce the product / service features.
5. Transfer plans to operations.
2. QUALITY CONTROL
1. Determine items to be controlled.
2. Set goals for the controls.
3. Measure actual performance.
4. Compare actual performance to goals.
5. Act on the difference.
3. QUALITY IMPROVEMENT
1. Establishment of quality council.
2. Identify the improvement projects.
3. Establish the project teams with a project leader.
4. Provide the team with the resources

8. Who is Philip Crosby?
Known as The Fun Uncle of the Quality Revolution
*Where Phil Crosby excellence was in finding a terminology for quality that mere
mortals could understand. (Dr. Deming and Dr. Juran were the great brains of the
quality revolution)
*He popularized the idea of the "cost of poor quality", that is, figuring out how
much it really costs to do things badly

9. Kaoru Ishikawa
Kaoru Ishikawa was a Japanese professor and influential quality management innovator
best known in north America for the Ishikawa or cause and effect diagram (also known as
fishbone diagram) that are used in the analysis of industrial process.
Quality Contribution:
User Friendly Quality Control
Fishbone Cause and Effect Diagram - Ishikawa diagram
Implementation of Quality Circles
Emphasized the 'Internal Customer '
Shared Vision

10. Quality Contribution:
he was known for the use of the “seven basic tools of quality”:
•Pareto analysis: which are the big problems?
•Cause and effect diagrams: what causes the problems?
•Stratification: how is the data made up?
•Check sheets: how often it occurs or is done?
•Histograms: what do overall variations look like?
•Scatter charts: what are the relationships between factors?
•Process control charts: which variations to control and how?

11. Ishikawa diagram
The Ishikawa diagram (or fishbone diagram or also cause-and-effect diagram) are diagrams,
that shows the causes of a certain event. A common use of the Ishikawa diagram is in
product design. Also it reveals key relationships among various variables

12. Taguchi
Genichi Taguchi is an engineer and statistician. Taguchi developed a methodology for
applying statistics to improve the quality of manufactured goods. Taguchi methods have
been controversial among some conventional Western statisticians, but others have
accepted many of the concepts introduced by him as valid extensions to the body of
knowledge.

13. Taguchi Philosophy
3 stages in a product’s (or process’s) development:
1) System design: uses scientific and engineering principles to
determine the basic configuration.
2) Parameter design: specific values for the system parameters are
determined.
3) Tolerance design: determine the best tolerances for the
parameters.

14. Taguchi Philosophy
Recommends: statistical experimental design methods have to
be used for quality improvement, particularly during
parameter and tolerance design phases.
■Key component: reduce the variability around the target
(nominal) value.

15. Points to be remember
Quality Gurus
Deming –Wheel
Juran – Trilogy
Crossby – Quality Contribution
Ishikawa – cause and effect diagram or fish bone diagram
Taguchi -DoE