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弹箭与制导学报 >

2022 , Vol. 42 >Issue 1: 38 - 41

DOI: https://doi.org/10.15892/j.cnki.djzdxb.2022.01.008

固体火箭发动机多层结构超声信号传输的数学模型

  • 郭旭飞 1, 2
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  • 1 吕梁学院物理系,山西 吕梁 033001
  • 2 中北大学信息探测与处理山西省重点实验室,太原 030051

郭旭飞(1988—),男,山西吕梁人,博士,研究方向:超声无损检测与成像。

收稿日期: 2021-09-11

  网络出版日期: 2025-02-21

基金资助

山西省高等学校科技创新计划(2020L0712)

信息探测与处理山西省重点实验室开放基金项目(ISTP2020-8)

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Mathematical Model of Ultrasonic Signal Transmission in Solid Rocket Motor Multilayer Structure

  • GUO Xufei 1, 2
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  • 1 Department of Physics, Lvliang University, Lvliang 033001, Shanxi,China
  • 2 Shanxi Key Laboratory of Signal Capturing & Processing, North University of China, Taiyuan 030051, China

Received date: 2021-09-11

  Online published: 2025-02-21

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摘要

从线性系统信号传输的角度出发,研究固体火箭发动机多层结构中超声信号传输的机理,建立了垂直作用于多层结构的超声幅度谱的数学模型,并利用Matlab软件仿真获得多层结构的归一化幅频特性和相频特性曲线。仿真结果表明,对于由钢和橡胶构成的多层结构,利用幅频特性和相频特性可以预测其一界面脱粘;如果二界面脱粘深度逐渐增大,对应的幅频特性和相频特性均会发生细微改变。

关键词： 固体火箭发动机; 多层结构; 幅度谱; 界面脱粘

本文引用格式

郭旭飞 . 固体火箭发动机多层结构超声信号传输的数学模型[J]. 弹箭与制导学报, 2022 , 42(1) : 38 -41 . DOI: 10.15892/j.cnki.djzdxb.2022.01.008

Abstract

In this article, the mechanism of ultrasonic signal transmission in solid rocket motor multilayer structure was studied from the perspective of linear system signal transmission, and a mathematical model of the ultrasonic amplitude spectrum acting perpendicularly to the multilayer structure was derived. Then Matlab software was used in order to obtain the amplitude-frequency and phase- frequency characteristic curve of the multilayer structure. The simulation results show that for a multi-layer structure composed of steel and rubber, the debonding of the first interface can be predicted by using the amplitude-frequency and phase frequency characteristics. If the debonding depth of the second interfaces gradually increases, the corresponding amplitude-frequency and phase-frequency characteristics will change slightly.

Key words： solid rocket motor; multilayer structure; amplitude spectrum; interface debonding

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参考文献

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