High-temperature Hopkinson pressure bar experimental system with atmosphere protection device

Abstract

The invention discloses a high-temperature Hopkinson pressure bar experimental system with an atmosphere protection device. The whole system comprises an atmosphere protection device, a heating system and a loading system, wherein the atmosphere protection device comprises a protection box, an exhaust emission pipeline and an exhaust filtering device, wherein the protection box is provided with a protective gas inlet, an exhaust emission hole and a cooling gas inlet, and a seal suite is arranged between the protection box and a wave guide bar; the heating system comprises a heating furnace, an armoured thermocouple and a thermocouple wire, wherein the armoured thermocouple is used for monitoring furnace temperature, and the thermocouple wire is welded on a test piece by spots and is used for measuring the temperature of the test piece. The whole heating furnace, the armoured thermocouple for monitoring furnace temperature and bar ends of two wave guide bars are separately arranged in the protection box. The invention can adopt two experimental methods for firstly heating the test piece, and then assembling the test piece and the wave guide bars or heating the test piece and the wave guide bars simultaneously. The experimental system not only can conveniently carry out a high-temperature dynamic experiment of special materials in a protection atmosphere, but also can be used for a high-temperature dynamic experiment in common air.

Description

technical field [0001] The invention belongs to the technical field of high-temperature dynamic mechanical property experiments of materials, and in particular relates to a high-temperature Hopkinson pressure bar experimental system with an atmosphere protection device. Background technique [0002] There are two commonly used methods for studying the high-temperature dynamic mechanical properties of materials using Hopkinson pressure rods. One is to keep the waveguide rod and the test piece separated before the experiment, heat only the test piece, and then complete the assembly of the test piece and the waveguide rod before the impact. In this method, the temperature gradient in the rod is reduced because the rod is separated from the specimen during heating, and the data processing is relatively simple. The invention patent (Patent No.: ZL200610021096.5) titled "Automatic Assembly Device for Two-way Dual Airways for High-temperature Hopkinson Compression Bar Experiment"...

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Problems solved by technology

[0004] In order to overcome the deficiency that the high-temperature compression rod experiment in the prior art cannot provide an experimental environment that meets the specific requirements, resulting in high-temperature oxidation of the experimental materials or even the release of toxic gases, the present invention provides a high-temperature Hopkinson pressure rod with an atmosphere protection device. rod test system

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