Impact pressure testing device and method based on mechanoluminescent material

Abstract

The invention discloses an impact pressure testing device and method based on a mechanoluminescent material. The device comprises a pressure generation device, which is in contact with the bottom plane of an impedance matching material, wherein the upper plane and the inclined plane of the impedance matching material are provided with a mechanoluminescent material, the mechanoluminescent material is opposite to a linear optical fiber array, the output of the linear optical fiber array is connected with the input of an optical splitter, the output of the optical splitter is connected with the input of a photoelectric detector through an optical fiber, the output of the photoelectric detector is connected with the input of an oscilloscope through a coaxial cable, detonation waves or shock waves generated by the pressure generation device are transmitted to the impedance matching material, optical signals are generated on the mechanoluminescentmaterial, the optical signals received by the linear optical fiber array are transmitted to the photoelectric detector through the optical splitter and the optical fiber, the photoelectric detector converts the optical signals into electric signals, the electric signals are transmitted to the oscilloscope through the coaxial cable, and the oscilloscope displays the electric signals on a screen. According to the invention, an electrode lead is not needed, and interference of transient high temperature and electromagnetic radiation on signals can be avoided.

Description

technical field [0001] The invention belongs to the technical field of ultra-high pressure testing, and in particular relates to an impact pressure testing device and method based on mechanoluminescent materials. Background technique [0002] In dynamic high-pressure physics research, explosive performance characterization, and weapon power evaluation tests, it is often necessary to measure dynamic ultra-high pressure. This pressure is generally obtained through explosive explosion, high-speed impact, and high-energy particle bombardment. It has two characteristics: ①The pressure reaches GPa level; ②With transient high temperature. [0003] Currently, commonly used shock pressure tests use piezoresistive pressure sensors and piezoelectric pressure sensors. The piezoresistive pressure sensor uses the piezoresistive effect of the material to convert the pressure into an electrical signal for measurement. The manganese-copper alloy is used to make ultra-high pressure sensors b...

AI Technical Summary

Problems solved by technology

However, the above-mentioned sensors still have some disadvantages in the shock pressure test process: first, the electrode leads reduce the reliability of sensor signal transmission in the shock environment; second, the electrical signal is easily interfered by the electromagnetic radiation generated by the explosion; third, Contact measurements can expose the sensor to transient high temperatures

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