Test Method with Small Samples of Electro-Explosive Devices Based on Information Equivalence Principle

Abstract

In order to solve the problem which generally exists in assessing high explosive ignition reliability of electro-explosive devices (EED), a new test method, based on information equivalence principle, is proposed on the condition of a relatively smaller sample size for instead. According to the definition of information principle, the method measures the reliability test information by the negative logarithm of ignition probability of EED and converts the test by GJB376-1987 at a larger amount of stimulation with a big sample size to a small one. We adopt this method to assess the ignition reliability of EED used in the emergency opening system. The result is that we just need 29 sample size on the confidence of not less than 95% and the ignition reliability greater than 0.999. Compared with the 2996 sample size in GJB376-1987, the method reduces the sample usage greatly. Tests shows that the small sample test method based on information equivalence principle for the ignition reliability test of EED is accurate, feasible and can meet the objective of experimental design