Method and device for measuring post-combustion effect of non-ideal explosive by underwater explosion method

Abstract

The invention relates to a method and a device for measuring a post-combustion effect of a non-ideal explosive by an underwater explosion method. The method comprises the following step of: processing an impact wave signal and a gas bubble pulsation signal through underwater explosion by using an implementation device for enhancing the post-combustion effect of the non-ideal explosive under the condition that test conditions such as explosive amount, the size of the implementation device, gas pressure, underwater penetration of an explosion source, the position of a sensor relative to the explosion source and the like are identical so as to solve a specific energy value of the post-combustion effect of the explosive under the atmosphere of different gases; integrating a pressure time-interval curve of an impact wave to solve a specific impulse I and a specific impulse II respectively; and defining an indicator value phi which represents the post-combustion effect, wherein the definition of the phi is shown in the specification. When a selected integral form during impulse examination is the specific impulse I, a selected integral form during the impulse examination is the specificimpulse II, and tc in the formula means integral starting time, a decay time constant, namely required time when pressure is attenuated from a peak value pm to pm / e, of the pressure time-interval curve of a naked explosive is selected; when tend means integral end time, time when the pressure time-interval curve of the impact wave is attenuated to a position close to a base line is required to beselected; and p(t) which means the pressure of the impact wave is a function of time t.

Description

technical field The invention relates to a technique for measuring the afterburning effect of explosives, in particular to a method and a device for measuring the afterburning effect of non-ideal explosives by an underwater explosion method. Background technique The devices for measuring the afterburning effect of explosives in the prior art mostly use calorimeter bombs or explosive containers, which cannot fully meet the requirements of high test accuracy, good reproducibility and safety. With the needs of national defense construction, there is an urgent need for a method that satisfies high test accuracy, good reproducibility and safety at the same time, and provides a basis for the application and selection of explosives. Document 1: Kiciński W, Trzciński W A. Calorimetry studies of explosion heat of non-ideal explosions. Journal of Thermal Analysis and Calorimetry, 2009, 96(2), 623-630. Detonation heat under different gas atmospheres, but the reproducibility is not hi...

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Problems solved by technology

Document 1: Kiciński W, Trzciński W A. Calorimetry studies of explosion heat of non-ideal explosions. Journal of Thermal Analysis and Calorimetry, 2009, 96(2), 623-630. Detonation heat under different gas atmospheres, but the reproducibility is not high enough and the safety is poor

Document 2: U.S. Patent US 6,354,220 B1. Graham et al. Underwater explosive device. 2002.3 discloses an underwater explosive device, which is used to enhance the underwater explosion power of explosives, but does not propose a method for measuring the afterburning effect