A composite gas cylinder health monitoring system and method based on acoustic emission

Abstract

The invention discloses a composite gas bottle health monitoring system and method based on acoustic emissions. The system comprises a sensor, a front amplifier, a main amplifier, an analog-digital converter, a collector and a processor; the sensor is used for detecting acoustic emission mechanical waves inside a composite gas bottle, and converting the acoustic emission mechanical waves into voltage vibration signals; the front amplifier is used for amplifying the voltage vibration signals to obtain second electric signals; the main amplifier is used for amplifying the second electric signals to obtain third electric signals; the analog-digital converter is used for converting the third electric signals into digital signals; the collector is used for collecting and transmitting the digital signals in real time; the processor is used for receiving the digital signals and carrying out analysis processing on the signals, and acoustic emission signal feature parameters needed by composite gas bottle health monitoring are obtained. Health monitoring under the use state of a composite gas bottle is achieved, and the damage condition and the fatigue life of the composite gas bottle can be effectively evaluated and predicted.

Description

technical field [0001] The invention relates to the technical field of health monitoring of composite gas cylinders for aerospace, in particular to a system and method for health monitoring of composite gas cylinders based on acoustic emission. Background technique [0002] Composite material gas cylinder is an important stand-alone unit of the rocket pressurization delivery system, which is used to store high-pressure nitrogen or helium to pressurize the propellant tank. With the development of my country's aerospace technology, the reuse of vehicles has become a future development trend, which poses a great challenge to composite gas cylinders. One of the main technical difficulties lies in monitoring the use status and damage of composite gas cylinders, and early warning of possible failures. [0003] The non-destructive testing method is the main means to evaluate the damage state and damage development law of composite gas cylinders, to evaluate the service performance...

AI Technical Summary

Problems solved by technology

[0004] The technical problem solved by the present invention is: compared with the prior art, a composite material gas cylinder health monitoring system and method based on acoustic emission is provided, which solves the problem of health monitoring of composite material gas cylinders in use state, effectively Evaluated and predicted the damage condition and fatigue life of composite gas cylinders

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