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Method for analyzing reliability of explosive logic network based on evaluation of accelerated life

A technology of logic network and accelerated life, applied in the field of reliability analysis of explosive logic network based on accelerated life evaluation, can solve problems such as large test error, and achieve the effect of reducing test error, speeding up prediction, and speeding up storage life reliability

Inactive Publication Date: 2017-10-03
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

However, the accelerated life test of conventional pyrotechnic products generally only uses a single temperature as the accelerated life test method of environmental stress, and does not add humidity environmental stress. This kind of accelerated test that ignores the influence of environmental humidity on the system will produce large test errors.

Method used

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  • Method for analyzing reliability of explosive logic network based on evaluation of accelerated life
  • Method for analyzing reliability of explosive logic network based on evaluation of accelerated life
  • Method for analyzing reliability of explosive logic network based on evaluation of accelerated life

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Embodiment Construction

[0020] In order to make the object, technical solution and advantages of the present invention clearer, the embodiments of the present invention will be further described below in conjunction with the accompanying drawings. It should be understood that the calculation examples described here are only used to explain the present invention, and are not intended to limit the present invention.

[0021] The reliability analysis method of explosion logic network based on accelerated life assessment in this example includes the following steps:

[0022] Step 1: According to the characteristics that the explosive logic network belongs to pyrotechnics and its basic structural principles, the failure distribution function of the system is determined to be log-normal distribution, and the failure probability density function expression is shown in formula (1).

[0023]

[0024] Among them, t represents the failure time, σ represents the standard deviation, and μ represents the averag...

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Abstract

The invention discloses a method for analyzing the reliability of an explosive logic network based on evaluation of accelerated life. According to the method, accelerated stresses in temperature and humidity directions are selected and used; and an acceleration model is introduced into a conventional distribution function for transformation of the distribution function so as to each reliability parameter expression related to temperature-humidity. The method provided by the invention takes the influence of both temperature and humidity on the storage life of the explosive logic network into consideration; and compared with a conventional accelerated-life testing method which only takes temperature into consideration, the method reduces testing errors caused by consideration of the influence of a single environmental stress and better accords with the actual situation of complex storage environments in a battlefield.

Description

technical field [0001] The invention belongs to the technical field of reliability analysis, in particular to an explosion logic network reliability analysis method based on accelerated life evaluation. Background technique [0002] Explosion logic network is a detonation transfer sequence realized by utilizing the unconventional detonation characteristics of explosives. It is composed of various explosive elements and input and output pyrotechnics. It has the characteristics of low cost, multiple functions, and high precision. It is generally used in weapon systems such as directional warheads, as well as aviation and aerospace systems. The explosion logic network can realize detonation control functions such as delayed detonation, directional detonation and multi-point detonation. The output of the explosive logic network is typically a weapon warhead, so failure would have catastrophic consequences. [0003] Explosive logic network belongs to pyrotechnics, and most of i...

Claims

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Application Information

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IPC IPC(8): G01N33/22
CPCG01N33/227
Inventor 黄洪钟周勇李彦锋米金华郭骏宇殷毅超张凯延
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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