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2 - IDEAS SOLUTIONS FOR TUTORIAL EXERCISES GSOE9810 PRODUCT...

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I DEAS & S OLUTIONS FOR T UTORIAL E XERCISES GSOE9810 PRODUCT AND PROCESS QUALITY IN ENGINEERING Discussion Questions Chapter 4 Question 10 Ideas for discussion: An old nursery rhyme says: For want of a shoe the horse was lost. For want of a horse the rider was lost. For want of a rider the battle was lost. For want of a battle the kingdom was lost. And all for the want of a horseshoe nail Or as Benjamin Franklin said: An ounce of prevention is worth a pound of cure. Prevention costs are those costs associated with preventing defects and imperfections from occurring. Prevention costs include: · The cost of setting up, planning, and maintaining a documented quality system · Quality planning · Quality and process engineering (including preventive maintenance) · Calibration of quality related production equipment · Supplier quality assurance (including supplier assessment) · All training · Defect data analysis for corrective action purposes · Time spent on quality system audits Compare these costs with the cost of not selling your product or service. Question 11 The following two tables illustrate the situation: 1
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They are associated with product failure after the production process. External failure costs include failure after the customer takes possession of the product. While the cost of failure may vary across circumstances, common sense says that external failure costs are the most expensive. It is always better to catch mistakes as soon as possible. The worst possible scenario is to find out that a part is defective after the customer has already started using it. The Lundvall-Juran model illustrated below is a simple economic model. It shows the difference in expenditures between internal and external expenditures. 2
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