A test method for detonation wave corner performance

A test method and detonation wave technology, applied in the field of detonation wave corner performance testing, can solve the problems of high requirements for test equipment, complex test operation, complex data processing, etc., and achieve easy popularization and application, simple data processing, and simple operation Effect

Active Publication Date: 2020-12-15
XIAN MODERN CHEM RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, there are some problems in the prior art: (1) The mushroom test has high requirements on the test equipment, and images need to be acquired by a high-speed scanning camera; Structural forming is difficult; (3) The mushroom test results need to be processed and calculated by microscope and data processing software, which requires very high precision and complicated data processing
In short, the existing methods have high requirements for instruments, complicated test operations and high costs.

Method used

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  • A test method for detonation wave corner performance
  • A test method for detonation wave corner performance
  • A test method for detonation wave corner performance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] This example is a test of the detonation wave corner performance of the PBX-1 explosive. The main explosive 4 used is five Φ40mm×3mm tablets superimposed, and the booster 2 is a Φ20mm×20mm cylindrical charge with a No. 8 detonator hole. , detonator 1 is No. 8 copper shell electric detonator, and its test method comprises the following steps:

[0026] (1) Place the PBX-1 main explosive 4 at the center of the test bracket 7, keep all the tablets concentric, and place four thin-film pressure sensors 5 between the end faces of every two tablets, and the sensitive parts of the sensors are respectively located at the center of the end faces of the charges , 1 / 3 radius from the center, 2 / 3 radius from the center and edge positions;

[0027] (2) Place the booster charge 2 on the upper end of the main explosive 4 and keep it coaxial;

[0028] (3) Press the trigger probe 3 on the bottom of the booster charge 2;

[0029] (4) tighten the nuts of the test bracket 7, and fix and po...

Embodiment 2

[0038] This example is a test of the detonation wave corner performance of GHL-2 explosive. The main explosive 4 used is 3 Φ40mm×5mm tablets and 2 Φ40mm×1mm tablets stacked from top to bottom, and the booster 2 is Φ20mm ×20mm cylindrical powder column with No. 8 detonator hole. Detonator 1 is No. 8 copper shell electric detonator. The test method includes the following steps:

[0039] (1) Place the GHL-2 main explosive 4 at the center of the test bracket 7, keep all the tablets concentric, place 5 thin-film pressure sensors 5 between the end faces of every two tablets, and the sensitive parts of the sensors are respectively located at the center of the end faces of the charges , 1 / 4 radius from the center, 2 / 4 radius from the center, 3 / 4 radius from the center and edge positions;

[0040] (2) Place the booster charge 2 on the upper end of the main explosive 4 and keep it coaxial;

[0041] (3) Press the trigger probe 3 on the bottom of the booster charge 2;

[0042] (4) tight...

Embodiment 3

[0051] This example is a test of the detonation wave corner performance of PBX-3 explosives. The main explosive 4 used is three Φ40mm×3mm tablets and two Φ40mm×2mm tablets superimposed from top to bottom, and the booster 2 is Φ20mm ×20mm cylindrical powder column with No. 8 detonator hole. Detonator 1 is No. 8 copper shell electric detonator. The test method includes the following steps:

[0052] (1) Place the PBX-3 main explosive 4 at the center of the test bracket 7, keep all the tablets concentric, and place 6 thin-film pressure sensors 5 between the end faces of every two tablets, and the sensitive parts of the sensors are respectively located at the center of the end faces of the charges , 1 / 5 radius from the center, 2 / 5 radius from the center, 3 / 5 radius from the center, 4 / 5 radius from the center and edge positions;

[0053] (2) Place the booster charge 2 on the upper end of the main explosive 4 and keep it coaxial;

[0054] (3) Press the trigger probe 3 on the bottom ...

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Abstract

The invention discloses a detonation wave corner performance test method. The method is characterized in that film pressure sensors are arranged inside a main explosive, the detonation wave corner performance of the explosive is evaluated by comparing the pressure values of different positions after detonation, the main explosive is formed by overlaying multiple explosive pieces, and the film pressure sensors are placed at different radial positions among the explosive pieces; the main explosive, the film pressure sensors, a booster explosive and a detonator are overlaid from bottom to top andare fixed and positioned through a test support. The method is applicable to the detonation wave corner effect tests of various explosive columns, pressure time travel curves of different depths anddifferent radial positions inside the explosive are recorded, the distance needed to allow the pressure at different radial positions in the explosive columns to be consistent is determined, and the detonation wave corner performance of the explosive is evaluated.

Description

technical field [0001] The application belongs to the technical field of propellant and explosive evaluation, and specifically relates to a method for testing the detonation wave corner performance. to evaluate. Background technique [0002] In the propagation sequence of the explosive charge, the small-sized charge always detonates the large-sized charge, and there is a process of detonation wave expansion and turning in both the explosion logic network and the waveform controller. In these processes, the detonation wave often does not follow the Propagation based on the principle of geometric optics, when the propagation direction deviates from the Huygens principle, the phenomenon of wavefront lag or local non-detonation occurs. This phenomenon is called the corner effect of explosive detonation wave propagation. Corner performance is an important characteristic of the detonation wave of explosive charge, and it is one of the important parameters that must be considered ...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): G01N33/22
CPCG01N33/227
Inventor赵娟冯晓军薛乐星陶俊冯博封雪松
OwnerXIAN MODERN CHEM RES INST