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2 3 4 5 6 7 8 performance reliability durability

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Unformatted text preview: ul to environment The Eight Dimensions of Quality 1. 2. 3. 4. 5. 6. 7. 8. Performance Reliability Durability Serviceability Aesthetics Features Perceived Quality Conformance to Standards 4 The Transmission Example Quality Characteristics Quality Quality characteristics may be of several types; Physical: Physical: length, weight, voltage Sensory: Sensory: taste, appearance, color Time Time Orientation: reliability, durability Variability Variability can only be described in statistical terms classified as either attributes or variables data. Variables data are usually continuous measurements and where attributes data are usually discrete often taking the form of counts. 5 Quality Characteristics Specifications Specifications Lower Lower specification limit Upper Upper specification limit Target Target or nominal values Defective Defective or nonconforming product Defect Defect or nonconformity Not Not all products containing a defect are necessarily defective Statistical Methods for Quality Control and Improvement 6 Statistical Methods Statistical Statistical process control (SPC) Control Control charts, plus other problem-solving tools problemUseful Useful in monitoring processes, reducing variability through elimination of assignable causes OnOn-line technique Designed Designed experiments (DOE) Discovering Discovering the key factors that influence process performance Process Process optimization OffOff-line technique Acceptance Acceptance Sampling Statistical Methods 7 Statistical Methods Management Aspect of Quality 1. 2. 3. Effective management of quality requires the execution of three activities: Quality Planning Quality Assurance Quality Control and Improvement 8 Management Aspect of Quality Management Aspect of Quality 9 Management Aspect of Quality Quality Philosophies and Management Strategies Walter Walter Shewhart (1920s -1940s) W. W. Edwards Deming (post WWII through 1980s) Joseph Joseph M. Juran (consultant post WWII through 1980s) Armand Armand Feigenbaum Philip Philip Crosby (1980s) Japanese Quality Innovators: Kaoru Kaoru Ishikawa (post WWII - 1980s) Genichi Genichi Taguchi (19...
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