Monday, August 18, 2008

Design of Experiments and Quality Assurance

Why would a project quality team design an experiment? Design of experiments is an analytical technique for project quality assurance that helps project managers determine which variables have the most effect on an outcome. It can help you determine the capability of a material, process, or product.

Your project can be improved with experiments that test new ideas and possibilities. Designed experiments are helpful in solving chronic quality problems. Properly designed experiments can:
  • reduce rework
  • improve productivity
  • increase customer satisfaction
  • prevent problems
  • reduce the need for extra inspections.
Companies strive for efficiency in most areas. After all, companies that have efficient processes while still maintaining a high level of quality are usually the companies that are best-in-their-class.

Design of experiments is a more efficient and less disruptive experimentation process than most trial method experiments. It requires extra thought and planning. However, it is worth the time and effort put into it.

This technique for quality assurance is beneficial for many company types and is most often used for projects that produce a product. Companies and their project managers usually choose to use this technique for the following reasons.
  • It requires smaller sample sizes to receive the same accuracy of results.
  • It determines interactions between process variables.
  • It tests more variables at one time, making this process more efficient.
Design of experiments is a quality assurance technique that verifies how materials, products, or processes affect your project. It is useful for solving chronic quality problems because it tests new ideas and possibilities.

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