Sealed initiating explosive device storage life evaluation method based on missile electric igniter
A technology of electric ignition head and storage life, which is applied in the direction of electric digital data processing, instruments, probability CAD, etc., can solve the problems of storage life evaluation method of unsealed pyrotechnics, and achieve the effect of storage life evaluation
Active Publication Date: 2020-05-19
天航长鹰(江苏)科技有限公司
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Problems solved by technology
At present, there is no storage life evaluation method for sealed pyrotechnics, and when evaluating the reliability of such pyrotechnics, only one degradation model calculation may cause relatively large errors
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[0044] A method for evaluating the storage life of sealed pyrotechnics based on the bomb electric ignition head of the present invention will be described in detail in conjunction with the drawings and specific embodiments.
[0045] The present invention is based on a method for evaluating the storage life of sealed pyrotechnics based on the electric ignition head for bombs, such as image 3 , which includes the following steps:
[0046] Step 1: Analyze the functional structure of the electric ignition head, clarify the relationship between the electric ignition head and the curing glue during the degradation and failure process, and the two-stage changes of the pyrotechnic product during the degradation process. The failure of the electric ignition head is divided into performance aging failure and moisture failure caused by poor airtightness. At the same time, the aging failure of the cured adhesive is considered in the degradation process of the electric ignition head. The ...
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The invention discloses a sealed initiating explosive device storage life evaluation method based on a missile electric igniter, and the method comprises the steps: 1, carrying out the analysis of thefunctional structure of the electric igniter, determining the correlation between the electric igniter and a curing adhesive in a degradation failure process and the two-stage change in the degradation process, and building a two-stage accumulation type time sequence degradation transmission model; 2, obtaining a probability density function and a distribution function of the electric igniter indifferent periods and the curing adhesive related to the degradation amount through an accelerated degradation test; and 3, solving the reliability of the sealed initiating explosive device accordingto a multi-failure-mode calculation method. According to the method, the reliability and the reliable service life of the sealed initiating explosive device can be obtained, and the novel sealed initiating explosive device storage life evaluation method based on the electric igniter for the bomb is provided. According to the method, the storage life of the sealed initiating explosive device is evaluated according to a probability density function and a distribution function of product degradation and the cumulative damage effect of front and back stages.
Description
technical field [0001] The invention provides a method for evaluating the storage life of sealed pyrotechnics based on an electric ignition head for bombs, and belongs to the technical field of storage life evaluation of sealed pyrotechnics components. Background technique [0002] Explosives are a general term for disposable components and devices that contain gunpowder or explosives, which burn or explode after being stimulated by the outside world to ignite gunpowder, detonate explosives, or perform mechanical work. Among them, electric ignition heads are very typical A pyrotechnic product. [0003] The fuze is a control device that uses target information and environmental information to detonate or ignite the charge of the warhead under predetermined conditions. In the fuze structure, the function of the electric ignition head is to output deflagration products after ignition, thereby cutting off the copper wire of the positioning pin. , so that the positioning pin ret...
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IPC IPC(8): G06F30/20G06F119/14G06F119/08G06F111/08
Inventor 袁宏杰徐如远
Owner 天航长鹰(江苏)科技有限公司