Effects of Measurement System Analysis on the Sampling Plan of MIL-STD-1916

[[abstract]]The MIL-STD-1916 sampling plan aims to request the supplier to establish a quality system and continually improve the implementation of process control. Though, in the process of sampling, MIL-STD-1916 adopts a set of acceptability criteria to make the decision. The decision regarding to either accepting or rejecting the incoming batch, the sample variance might involve variation from the measurement system (also known as R&R variation), which may result in the rejection of good batch. Therefore, this paper proposes a preventive sampling plan that considers both quality loss and measurement system. The proposed approach can clearly identify the source of variation, either from parts variation or gauge variation, when a good lot is rejected. Based on this, the minimum probability of rejecting good lot is studied to protect the supplier’s risk by considering its true process performance. Finally, this study can also provide a company the optimal combination of number of inspectors and number of replications that minimizes measurement variation when adopting the sampling plan of MIL-STD-1916