A device for measuring interfacial strain under temperature and pressure synergy

By using an interfacial strain measurement device under temperature and pressure synergy, and employing cutting and cleaning techniques to simulate the combustion process of propellant grains, the problem of the non-reusability of solid propellants is solved. This enables interfacial strain measurement without combustion measurement, adapts to cutting and cleaning of propellant grains of different diameters, and maintains measurement accuracy.

CN117405069BActive Publication Date: 2026-05-26XI AN JIAOTONG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
XI AN JIAOTONG UNIV
Filing Date
2023-10-24
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

In the existing technology, solid propellants cannot be reused after combustion, resulting in resource waste, and it is impossible to measure interfacial strain without combustion.

Method used

An interfacial strain measurement device under temperature and pressure synergy is used to simulate the combustion process by cutting the propellant column. The propellant column is cut layer by layer using blades and scrapers, and waste is cleaned up with a brush. Combined with fixing and pressure-applying components, the propellant column is kept stable, and the measurement is carried out in a simulated high temperature and high pressure environment.

Benefits of technology

It enables layered measurement of interfacial strain without burning the propellant, reducing resource waste, adapting to cutting propellant of different diameters, and maintaining measurement accuracy.

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Abstract

This invention relates to the field of solid propellant measurement technology, specifically to an interfacial strain measurement device under temperature and pressure synergy conditions. It includes an experimental chamber with mirror-distributed sliding doors rotatably connected to it. A controller is installed on one side of each sliding door. Inside the experimental chamber are a first fixed frame and an interfacial strain measurement module electrically connected to the controller. An electric actuator electrically connected to the controller is fixed to the first fixed frame. A second fixed frame is fixed to the telescopic end of the electric actuator. A drive motor electrically connected to the controller is located on the side of the second fixed frame away from the telescopic end of the electric actuator. This invention simulates the phenomenon of a propellant gradually shortening in length during combustion by cutting the propellant grain. The interfacial strain measurement module then performs layered measurements of the propellant grain, achieving the measurement of interfacial strain under different layered conditions without burning the propellant grain.
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