Experimental research on ultrasonic A-scan testing technology of composite solid propellant

0Citations
Citations of this article
5Readers
Mendeley users who have this article in their library.

This article is free to access.

Abstract

To explore the application and development of ultrasonic non-destructive testing technology in composite solid propellant materials, the theory is combined with the principle and method of ultrasonic non-destructive testing technology and the material characteristics of composite solid propellant; Based on ultrasonic A-scan, the experimental testing of propellant grain with multiphase structure, complex properties and high attenuation was carried out using pulse reflection method and penetration method. For the testing system with probe emission frequency of 1 MHz and gain adjustable range of 60 dB, the thickness of propellant grain is recommended to be 10 ∼ 50 mm for the pulse reflection method to effectively observe the first bottom echo and the second bottom echo, and the thickness of propellant grain is recommended to be less than or equal to 100 mm for the penetration method to effectively observe the transmission waveform. The coupling modes of ultrasonic testing technology are further analyzed, and the effect test is carried out. In addition, based on the pulse reflection method of direct contact coupling, the sound velocity of propellant grain is measured with probes with different frequencies. The results show that the higher the probe frequency is, the smaller the sound velocity of propellant grain is.

Cite

CITATION STYLE

APA

Huang, L., Li, J., & Li, B. (2022). Experimental research on ultrasonic A-scan testing technology of composite solid propellant. In Journal of Physics: Conference Series (Vol. 2338). Institute of Physics. https://doi.org/10.1088/1742-6596/2338/1/012011

Register to see more suggestions

Mendeley helps you to discover research relevant for your work.

Already have an account?

Save time finding and organizing research with Mendeley

Sign up for free