摘要
该文介绍了一种基于空气耦合超声技术的材料杨氏模量评估方法。首先采用1-3型压电复合材料及双层匹配结构,研制了高灵敏度的空气耦合超声换能器。在一发一收模式下,该空气耦合超声换能器的插入损耗和-6 dB带宽分别为-23.9 dB和26.9%。其次搭建实验平台,将空气耦合超声技术与静态拉伸法结合,以评估铜线和银线杨氏模量。铜线和银线杨氏模量评估结果与对应的公认值范围一致。
This paper presents a method for evaluating Young’s modulus of materials based on air-coupled ultrasonic technology.Firstly,the air-coupled ultrasonic transducer is developed based on 1-3 piezoelectric composites and double-layer matching structure.In the mode of one-transmitter-one-receiver,the insertion loss and-6 dB bandwidth of the designed air-coupled ultrasonic transducer are-23.9 dB and 26.9%,respectively.Then,an experimental platform is set up to evaluate the Young’s modulus of copper wire and silver wire by combining the static tensile method and air-coupled ultrasonic technology.The evaluated results are consistent with the corresponding recognized values.
作者
王晓彧
郭紫怡
黄文茜
吴浩东
陈杰
WANG Xiaoyu;GUO Ziyi;HUANG Wenqian;WU Haodong;CHEN Jie(School of Aeronautic Engineering,Nanjing Vocational University of Industry Technology,Nanjing 210023,China;Institute of Acoustics,Key Lab.of Modern Acoustics(MOE),Nanjing University,Nanjing 210093,China;Physics Laboratory of Basic Department,Southeast University Chengxian College,Nanjing 210088,China)
出处
《压电与声光》
CAS
北大核心
2023年第1期94-97,共4页
Piezoelectrics & Acoustooptics
基金
南京工业职业技术大学引进人才科研启动基金(YK21-03-06)。
关键词
空气耦合超声
杨氏模量
双匹配层
插入损耗
静态拉伸法
air-coupled ultrasonic
Young’s modulus
double-layer matching structure
insertion loss
static tensile method
