March 14, 2008

Process improvement

Six sigma is a process improvement methodology that aims to increase business performance through a solid and accurate business focus. It is a systematic approach to achieving continuous process improvements. The six-sigma approach incorporates five stages of implementation in process improvement, which are called the DMAIC-cycle of define-measure-analyzeimprove-control. These steps guide the improvement process and help detect root causes of the failures in a single improvement project. The key steps in six sigma are:

1. Defining product characteristics that affect customer satisfaction.

2. Using a failure mode and effect analysis to identify and control parameters to meet

customer specifications.

3. Employing a reproducibility and repeatability study to measure the control parameters.

4. Estimating the process capability of the prototypes and thereby being able to correct

individual defects immediately.

5. Developing the quality control plan and training material.


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