Preparation and performance testing of amidation modified acoustic matching layer for air coupling ultrasonic transducer

被引：0
|
作者：
Han S. [1 ]
Kang Y. [1 ]
Shao X. [1 ]
机构：
[1] Intelligent Manufacturing College, Tianjin Sino-German University of Applied Sciences, Tianjin
来源：
Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica | 2024年 / 41卷 / 05期
基金：
中国国家自然科学基金;
关键词：
air-coupled ultrasonic transducer; amidation modification; gas ultrasonic flowmeter; hollow glass microspheres; matching layer;
D O I：
10.13801/j.cnki.fhclxb.20230914.003
中图分类号：
学科分类号：
摘要：
A high-sensitivity air-coupled ultrasonic transducer with an acoustic matching layer based on epoxy resin/hollow glass microsphere (HGM) is investigated. In order to improve the dispersion of low-density HGM in high-density epoxy resin matrix, poly(methyl vinyl ether-alt-maleic anhydride) (PVMMA) was grafted onto the HGM surface (PVMMA-g-HGM). The morphology and surface chemical characteristics of modified HGM and HGM/epoxy resin composite were analyzed. An air-coupled ultrasonic transducer was fabricated with the improved matching layer, which achieved a peak-to-peak voltage of 4.88 V. In addition, the gas ultrasonic flowmeter equipped with the improved ultrasonic transducer had better flow field adaptability, and the relative error was less than 1.0%. This work is to propose a new technology to improve the performance of ultrasonic transducer in gas ultrasonic flowmeter. © 2024 Beijing University of Aeronautics and Astronautics (BUAA). All rights reserved.
引用
收藏
页码：2455 / 2464
页数：9
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