Wednesday, September 29, 2010

History (Evolution) of Quality Control

Contributors in the Improvement of Concept of QUALITY

In the early 1900s, the beginning of Factory Productions, the final products were inspected for the purpose of accepting or rejecting the same. During these times, in his list of basic areas of manufacturing management, F. W. Taylor, emphasized on quality by including Product Inspection into it. Radford’s was of the view of involving quality consideration early in the product design stage and also to connect-together Quality, Productivity and Costs.
In 1924, Walter Shewhart introduced ‘Statistical Process Control (SPC)’ by means of ‘Control Charts’ in order to keep a control over production. After five years or so, Dodge & Romig introduced Acceptance Sampling Inspection Tables popularly known as Dodge-Romig Tables. The concept of SPC found a little acceptance in the Manufacturing Industry till 1940s.
Historically, Second World War remarkably increased the importance of Quality Control. W. Edward Deming introduced SQC in Japanese Industry. This resulted in creation of a quality manufacturing facilities in Japan. The devastated country in this Second World War posed a tough competition to other leading nations in the area of manufacturing, especially the American Manufacturing Firms.
After this war, in the mid-twentieth century, professionals and engineers in the industry hugely benefited by the American Universities in terms of training in quality control. This has seen the emergence of ‘Quality Assurance’ evolved out of this development taken place around ‘Quality Control’ concept. At about the same time, Joseph Juran began his `Cost of Quality’ approach, emphasizing accurate and complete identification and measurement of Costs of Quality, In the mid 1950s, Armand Fiegen Baum proposed Total Quality Control which enlarged the focus of Quality Control from manufacturing to include Product Design.
During the 1960s, the concept of “Zero-defects” gained favor. Philip Crosby, who was the champion of “Zero defects” concept focused on employee motivation and awareness. In this decade from 1950 to 1960; quality control and management became synonymous with the growth of Industrial Revolution in Japan.
In the 1970s, Quality Assurance methods were used in services such as government operations, health care, banking etc. During this period the world started importing heavily from Japan including America and European countries. In the late 1970s, there was a dramatic shift from quality assurance to a strategic approach to quality. The `reactive’ approach of finding and correcting defectives in products manufactured was changed to a pro-active’ approach of focusing on preventing defects from recurring altogether. During the same period ‘British Standards’ (BS 5750) emerged along with ISO 9000 Standards of Quality.
In late 1980s, Total Quality Management (TQM) gained a lot of popularity even outside Japan and became the main theme revolving around the concept of Quality Control. In the twenty first century the concept of quality has been gathering a total or gross approach in terms of ‘Business Excellence’.

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