Explosive body expansion coefficient testing device

Abstract

The invention discloses an explosive body expansion coefficient testing device based on a liquid swelling method and a precise laser displacement sensor. The explosive body expansion coefficient testing device is composed of a volume metering system, a thermostat, a measurement control system and the like and can be directly used for measuring the volume increment of heat expansion of explosive and related materials and calculating the volume expansion coefficients of the explosive and related materials. When a testing system works, a swelling liquid flow system is constituted by a sample cavity in the volume metering system, a measuring thin tube, a sample cavity volume adjusting element and the like. The heat expansion volume increment of a sample is calculated through the liquid level height change displayed by the precise laser displacement sensor so that the volume expansion coefficient of the sample can be calculated. The explosive body expansion coefficient testing device has the advantages of being simple in operation, high in measuring accuracy, low in labor intensity and achieving the technical purpose that the explosive heat expansion coefficient is directly measured.

Description

technical field [0001] The invention belongs to the field of propellant and explosive performance testing, and mainly relates to a propellant and explosive body expansion coefficient testing device, in particular to a non-homogeneous explosive, propellant and cladding material, propellant and explosive based on precision laser displacement sensor and liquid swelling method Volume expansion coefficient test device. Background technique [0002] The coefficient of thermal expansion is the characteristic property of a material that deforms itself in hot and cold environments. Generally speaking, as the temperature rises, the volume of solid propellant and explosive will correspondingly increase, and when the temperature decreases, the volume of propellant and explosive will decrease accordingly. This phenomenon is called the thermal expansion of propellant and explosive. Thermal expansion may occur in propellant and explosive in the environment of propellant molding process, c...

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is that when accurately evaluating and characterizing the thermal expansion characteristics of propellants and explosives, the existing linear expansion test technology cannot satisfy the accurate measurement of thermal expansion characteristics of propellants and explosives, and lacks a direct and accurate test system and method for measuring the thermal expansion coefficient of propellants and explosives

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