Research on Estimation Method of MTBF for Zero-Failure Data in Reliability Time Truncated Qualification Test

With the advancement of design and manufacturing technology of the weapons and equipment,the probability of zero-failure is increased in the reliability time truncated qualification test.Many Statisticians have addressed such an issue,however,these methods are hardly applied because they focus on the mathematical derivation and the theoretical demonstration on zero-failure.A new method presented in this paper was used to derive a proof value of MTBF(mean-time-between-failures) from the Principle of Little-Probability according to the project of time truncated qualification test in GJB899.The method is easily operated and practicable,and can theoretically calculate the point estimation and the confidence intervals of MTBF.In addition,the application background of the method and project was described in detail.The evaluation method can calculate the estimation value of MTBF for GJB899.