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Method for injection loading explosive and powder loading structure damaging real-time monitoring

A technology for real-time monitoring and structural damage, applied in measuring devices, measuring heat, using optical devices, etc., can solve the problems of undetectable, increased risk, long X-ray scanning time, etc., achieve fast response time, reduce test risk, Monitoring the effectiveness of process safety

Inactive Publication Date: 2017-07-04
XIAN MODERN CHEM RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the CT detection method can carry out non-destructive testing on explosive charges, the X-ray scanning time is too long to achieve real-time monitoring, and it cannot be directly detected in the warehouse where the explosives are stored, which increases the danger during the handling of explosives. sex

Method used

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  • Method for injection loading explosive and powder loading structure damaging real-time monitoring
  • Method for injection loading explosive and powder loading structure damaging real-time monitoring
  • Method for injection loading explosive and powder loading structure damaging real-time monitoring

Examples

Experimental program
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Effect test

Embodiment 1

[0021] The research object is a new type of gel-state propellant and explosive developed by our unit, and thermally accelerated aging test is carried out on it. The new gel state propellant and explosive is in the gel state at room temperature, and its gel state may change when the ambient temperature changes, resulting in changes in the internal charge structure of the system. The traditional detection method is CT detection. The detection time of this method is long, real-time monitoring cannot be achieved, and the detection cannot be directly carried out in the warehouse where the explosives are stored, and the danger is increased during the handling process. The fiber grating sensing monitoring system can monitor the internal stress / strain changes of the new gel-state propellant and explosive system in the airtight container. The sample does not need to be moved, and the detection process realizes human-machine isolation, ensuring the safety of the experimenters, and the d...

Embodiment 2

[0034] Since the FBG sensor responds to stress, strain and temperature at the same time, in order to ensure the accuracy of the test results, it needs to be packaged when using the FBG sensor to measure the ambient temperature, so as to eliminate the influence of strain on the test results. The inner diameter of the tube used to package the temperature sensor should be larger than the outer diameter of the fiber grating, and the influence on the internal structure and mechanical properties of the charge should be reduced as much as possible. After market research and experimental demonstration, a medical needle with a diameter of 0.03mm was finally selected to package the fiber grating sensor. When packaging, put the fiber grating sensor into the medical needle, seal the two ends with epoxy glue, and let it stand for 12 hours to cure.

[0035] A. Select the initial wavelength λ 0 Single FBG fiber grating sensor with fc / apc interface in the range of 1510nm-1590nm, packaged wit...

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Abstract

The present invention provides a method for injection loading explosive and powder loading structure damaging real-time monitoring. The fiber grating sensing technology is taken as the basis, fiber grating sensors are buried in the explosive and powder loading, and the stress strain and temperature of the explosive and powder loading is monitored in real time. The method comprises: the fiber grating sensors are arranged in an explosive and powder loading die along the axial direction, the arrangement interval distance of the fiber grating sensors is 10-20cm, the fiber grating sensors are fixed in the explosive and powder loading along the axial direction according to the injection loading explosive and powder loading production technology flow, a fiber grating sensing demodulator and a computer are employed to monitor the stress strain and temperature of the explosive and powder loading in real time, and the changing of the stress strain reflects the damaging condition of the explosive and powder loading structure. The monitoring method is high in usage reliability in the flammable and combustible environment and long in service, and can perform long-term nondestructive detection of the injection loading explosive and powder loading so as to overcomes the defects that the real-time monitoring cannot be realized and the detection time is long in prior art.

Description

technical field [0001] The present invention relates to a method for real-time monitoring of the structural damage of the explosive charge of injected explosives, in particular to a method for kneading, pouring or The fiber grating sensor is fixed inside the propellant charge by melt injection and finally solidified, so as to carry out non-destructive real-time monitoring method for the structural damage of the propellant charge. Background technique [0002] Injected explosives are mainly divided into two categories according to the production process, pouring explosives and molten explosives. Among them, pouring explosives are typically represented by PBX explosives, which have high energy density, mechanical strength, and low sensitivity, and the energy can be properly adjusted within a certain range. It is mainly used in missile warheads, large-caliber explosive bombs, underwater weapons and nuclear warhead detonators. A typical representative of molten injection explo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/16G01K11/32G01K11/3206
CPCG01B11/165G01K11/32
Inventor 于思龙张林军顾妍王琼刘文亮贾林张皋张冬梅杜娇娇王芳芳
Owner XIAN MODERN CHEM RES INST
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