Small-Sample Inspection Plans for the New Product Quality Level Evaluation of Finite Population : Focused on Guided Weapons in Development Stage

Abstract

In the product development stage, it is very important to ensure demanded quality level before moving to the full-scale manufacturing. For example, in developing guided weapons, live-fire tests are required to verify the final performance of the weapons which are very expensive. The quality evaluation of the guided weapons needs destructive testing, which makes it necessary to test as small number of samples as possible. This paper presents sampling inspection plans and calculating system for finite population guided weapons, which can meet the demanded quality level and confidence level with the minimum number of performance tests. The result of this paper can be useful for any kind of costly destructive testing. †

Ensuring the reliability and reduction of quality control costs by minimizing process variability

“…For example, Son and Ryu [32] presented a sensitivity analysis and the results of comparing different methods of estimating reliability in determining the sample size and sampling time in one-shot processes. Shin et al [31] proposed a control based on low-number samples, taking into account the expected quality level of one-shot processes.…”