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Why/When is Taguchi Method Appropriate?

Why/When is Taguchi Method Appropriate?. Tip #4 Robust design improves “QUALITY ” at all the life stages at the design stage itself. Friday, 11 th May 2001. Tip #4. Robust design improves “QUALITY ” at all the stages at the design stage itself. The four stages are

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Why/When is Taguchi Method Appropriate?

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  1. Why/When is Taguchi Method Appropriate? Tip #4 Robust design improves “QUALITY” at all the life stages at thedesign stageitself Friday, 11th May 2001

  2. Tip #4 Robust design improves “QUALITY” at all the stages at thedesign stageitself • The four stages are • Design • Manufacturing • Customer usage • Aging

  3. PRODUCT LIFE CYCLE Every product life cycle has four stages Design Manufacturing Customer usage Aging Every stage has a " product quality " associated with it Conventional design methods improve " quality " at each stage only after the product passes through that stage Robust design improves " quality " the design stage itself at all the stages at

  4. How to minimize the ‘effects’ of all ‘manufacturing variations’ right at the design stage? • Variations during Manufacturing • Raw materials • Equipment • Workmanship • Variations during Operation/Use • Environment • Temperature, humidity, • supply voltage, EMI, • dust, vibration • Human error • Loading • Heavy duty, light duty • Variations due to aging (over time) • Components • Consumables Include these as NoIsE while conducting Matrix experiment

  5. How to minimize the ‘effects’ of all ‘operating variations’ right at the design stage? Normal testing conditions are for capturing the effect of NoIsE included during the Matrix experiments • Variations during Manufacturing • Raw materials • Equipment • Workmanship • Variations during Operation/Use • Environment • Temperature, humidity, • supply voltage, EMI, • dust, vibration • Human error • Loading • Heavy duty, light duty • Variations due to aging (over time) • Components • Consumables Include these as ‘additional’ testing conditions for measurements

  6. How to minimize the ‘effects’ of all ‘variations due to aging’ right at the design stage? • Variations during Manufacturing • Raw materials • Equipment • Workmanship • Variations during Operation/Use • Environment • Temperature, humidity, • supply voltage, EMI, • dust, vibration • Human error • Loading • Heavy duty, light duty • Variations due to aging (deterioration over time) • Components • Consumables Include these ‘deteriorations’ as NoIsE while conducting Matrix experiment Include these as ‘additional’ testing conditions for measurements

  7. How to minimize the ‘effects’ of all ‘causes of variations’ right at the design stage? • Variations during Manufacturing • Raw materials • Equipment • Workmanship • Variations during Operation/Use • Environment • Temperature, humidity, • supply voltage, EMI, • dust, vibration • Human error • Loading • Heavy duty, light duty • Variations due to aging (over time) • Components • Consumables Include these as NoIsE while conducting Matrix experiment Include these as ‘additional’ testing conditions for measurements Normal testing conditions are for capturing the effect of NoIsE included during the Matrix experiments Include these ‘deteriorations’ as NoIsE while conducting Matrix experiment and/oras ‘additional’ testing conditions

  8. Taguchi Method “inner” L9 array with “outer” L4 and L9 NoIsE arrays Taguchi Method “inner” L18 array with “outer” L4 and L9 NoIsE arrays Taguchi Method Why/When is TaguchiMethod not Appropriate? Friday, 27th July 2001 Friday, 20th July 2001 Friday, 13th July 2001 Earlier Tips Links below Tips 12, 11, 10 

  9. Taguchi Method “inner” L8 array with “outer” L4 and L9 NoIsE arrays Taguchi Method Useful at ALL Life-stages of a Process or Product Taguchi Method Performs Process “centering” or “fine tuning” Friday, 6th July 2001 Friday, 29th June 2001 Friday, 22nd June 2001 Earlier Tips Links below Tips 9, 8, 7 

  10. Taguchi Method Identifies the “right”NoIsEfactor(s) for Tolerance Design Taguchi Method Finds best settings to optimizeTWO quality characteristics Simultaneously 7. Taguchi Method When to select a ‘Larger’ OA to perform “Factorial Experiments” Friday, 15th June 2001 Friday, 8th June 2001 Friday, 1st June 2001 Earlier Tips Links below Tips 6, 5, 4 

  11. Taguchi MethodUsing Orthogonal Arrays for Generating Balanced Combinations of NoIsE Factors Taguchi MethodSignal-to-Noise Ratio for Quality Characteristicsapproaching IDEAL value 4. Taguchi Methodimproves " quality “ at all the life stages atthe design stage itself Friday, 25th May 2001 Friday, 18th May 2001 Friday, 11th May 2001 Earlier Tips Links below Tips 3, 2, 1 

  12. 3. Taguchi MethodAppropriate forConcurrent Engineering 2. Taguchi Methodcan studyInteraction between Noise Factors and Control Factors 1. Taguchi’sSignal-to-Noise Ratiosare inLog form Friday, 4th May 2001 Friday, 27th April 2001 Friday, 6th April 2001 Earlier Tips Links below

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