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The process control plays a vital role in controlling the quality of the product during the production process. However partially finished or finished product in a batch or lot has to be accepted or rejected before it reaches the consumer. To control the quality of the finished product, acceptance sampling plans are widely used. However, the literature shows that the sampling plan system is inadequate for the engineers at the shaft floor in different situations. Hence in this project, a novel relational mixed chain sampling plans is being developed by relating the results of current lot with...

In situations where testing is destructive or very expensive, small sample plans such as the chain sampling plan are used. The original chain sampling plan introduced by Dodge, known as the ChSP-1 plan, calls for the use of past lot inspection results when the current sample has a nonconforming unit. This selective use of related lot inspection results helps to achieve a more discriminating Operating Characteristic curve but it does not lead to a reduction in sample size... Thus, in order to achieve a smaller sample size, the approach for chaining the results of the i preceding lots may be...