Testing system and testing method for long-time creep property of explosive

Abstract

The invention discloses a testing system for the long-time creep property of an explosive. The testing system comprises a control console, a temperature control system, a loading system and test beds,wherein the temperature system and the loading system are connected with the control console, and the test beds are connected with the temperature control system and the loading system; creep testingunits are arranged on the test beds and installed in a sealed transparent cover, and a temperature control device is arranged below the transparent cover and connected with the temperature control system; the creep testing units are further connected with the loading system; and a temperature sensor is arranged in the transparent cover, load sensors and displacement sensors are arranged on the creep testing units, the temperature sensor, the load sensors and the displacement sensors are all connected to a testing control box, and the testing control box controls temperature adjustment of thetemperature control device and pressure loading adjustment of the loading system and achieves information transmission with the control console through a communication line. The invention further provides a testing method for the long-time creep property of the explosive. According to the testing system and testing method for the long-time creep property of the explosive, the cost can be significantly reduced, the research cycle is shortened, and the huge application value is achieved.

Description

technical field [0001] The invention relates to a test system and method for the creep performance of explosives, in particular to a test system and method for the long-term creep performance of explosives, belonging to the field of material experimental mechanics. Background technique [0002] The long-term creep performance test of explosive materials is one of the important contents in the safety and reliability assessment of ammunition weapon systems. The long-term creep performance test of explosive materials refers to the long-term stability of explosives under constant tensile or compressive loads. A test method for the deformation behavior of materials. This method is mainly used to test the long-term strength of materials at different temperatures, the steady-state creep rate at different load levels, and the evolution law of creep damage to obtain the creep damage law and characteristics of materials. constitutive model. [0003] When carrying out this type of exp...

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Problems solved by technology

[0003] When conducting this type of experiment, the biggest difficulty faced in the actual operation process is that there are many samples (different temperature points, different stress levels, two forms of tension and compression, and data repeatability must also be considered), and it takes a long time (single shot In the past, the creep test of explosives was carried out on a material testing machine, but the existing material testing machine can only test one sample at a time, which is only suitable for short-term creep experiments of several hours. To systematically carry out long-term (monthly) creep tests and obtain data within a short period of time, it is necessary to occupy several or more than a dozen material testing machines at the same time to carry out creep tests at the same time, which consumes a lot of material costs

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