PLURA Jiří

Spoluautoři NEPRAŠ Karel, KLAPUT Pavel

One of the standard requirements for automotive industry suppliers within the framework of production part approval process is the evidence about capability of process. Process capability criteria are capability indices whose standard evaluation is based on the assumption of normal distribution of monitored quality characteristic. However, distribution of a series of quality characteristics such as tensile strength, hardness, roughness etc. does not correspond to a normal distribution. The paper deals with the influence of skewness of monitored quality characteristic distribution to process capability analysis results. They are applied different probability distibutions for process capability analysis and achieved results are compared and discussed.

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