Explosive shock wave post-wave parameter measurement method and device based on background schlieren technology

An explosion shock wave and parameter measurement technology, applied in measurement devices, instruments, scientific instruments, etc., can solve the problems of large error, high cost, incomplete data, etc., achieve low cost, improve accuracy and reliability, and comprehensive and reliable data. Effect

Pending Publication Date: 2022-08-05
NAT UNIV OF DEFENSE TECH
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Problems solved by technology

[0007] On the one hand, the present application provides a method for measuring post-wave parameters of explosion shock waves based on background schlieren technology, in order to solve the technical problems of high cost, large error, and incomplete data of existing explosion shock wave measurement methods

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  • Explosive shock wave post-wave parameter measurement method and device based on background schlieren technology
  • Explosive shock wave post-wave parameter measurement method and device based on background schlieren technology
  • Explosive shock wave post-wave parameter measurement method and device based on background schlieren technology

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Embodiment Construction

[0055] It should be noted that the embodiments in the present application and the features of the embodiments may be combined with each other under the condition of no conflict. The present application will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0056] refer to figure 1 , a preferred embodiment of the present application provides a method for measuring parameters after an explosion shock wave based on background schlieren technology, comprising the steps:

[0057] S1. Obtaining the refractive index after shock wave based on background schlieren technology;

[0058] S2, obtain the density, pressure, velocity, temperature and Mach number after the shock wave respectively according to the basic properties of the shock wave and the state parameter equation, the ideal gas conversion formula obtained from the ideal gas state equation, and the refractive index after the shock wave.

[0059] Specifically, a...

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Abstract

The invention discloses an explosive shock wave post-wave parameter measurement method and device based on a background schlieren technology. The method comprises the following steps: acquiring a shock wave post-wave refractive index based on the background schlieren technology; according to the shock wave basic property and state parameter equation, an ideal gas conversion formula obtained through the ideal gas state equation and the shock wave post-wave refractive index, the shock wave post-wave density, pressure intensity, speed, temperature and Mach number are obtained. On one hand, the problems of unreasonable test data and test cost increase caused by unreasonable arrangement and damage of sensors in the test are avoided, and on the other hand, compared with a pressure sensor electrical measurement method and a schlieren camera shooting method, quantitative measurement of density, pressure intensity, speed, temperature and other information after shock waves can be achieved, data are more comprehensive and reliable, and the test efficiency is improved. And the cost is low, so that researchers can more scientifically and comprehensively measure and research the explosive power, and the accuracy and reliability of measurement are improved.

Description

technical field [0001] The present application relates to the technical field of shock wave testing, and in particular, to a method and device for measuring post-explosion shock wave parameters based on background schlieren technology. Background technique [0002] The overpressure test of ammunition explosion shock wave generally adopts the pressure sensor electrical measurement method. This method mainly measures the gas pressure information at key points in the near-earth area by arranging a pressure sensor array near the explosion field, and using the pressure signal measured by the pressure sensor. [0003] At present, the non-contact measurement of shock wave power in a large range mainly adopts the schlieren imaging method. The method is mainly based on the action of the explosion shock wave, the charge explodes in the air, and the energy is rapidly released to produce high-temperature and high-pressure detonation products, which violently compress the surrounding ai...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/00G01D21/02G01N21/84G06F30/23
CPCG01N33/0004G01N33/0062G01D21/02G01N21/84G06F30/23G01N2021/8411G06F2119/08G06F2119/14Y02T90/00
Inventor 丁浩林
Owner NAT UNIV OF DEFENSE TECH
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