摘要
将超声相控阵频率-波数域全聚焦算法应用于304不锈钢金属薄板分层缺陷的检测中,采用两种型号的相控阵探头分别对厚度为1 mm和3 mm金属薄板的分层缺陷进行检测,比较了时域全聚焦和频率-波数域全聚焦两种算法的成像质量。结果表明:基于时域和频率-波数域的全聚焦算法均能够检测出金属薄板的分层缺陷,相对于传统时域全聚焦成像方法,频率-波数域全聚焦法成像检测具有分辨率高、伪像区域小等优点。
In this paper, the ultrasonic phased array frequency-wavenumber domain total focusing method was applied to 304 stainless steel sheet metal layered defect detection. Two kinds of models of phased array probe were used, to detect 1 mm and 3 mm thickness of sheet metal layered defect, and the conventional time domain total focusing method and frequency-wavenumber domain total focusing method imaging quality of two kinds of algorithm were compared. The research results show that total focusing method algorithms based on time domain and frequency-wavenumber domain can detect layered defects of thin metal plates. As compared with conventional time domain total focusing method imaging, the frequency-wavenumber domain total focusing method imaging detection has high resolution, smaller artifact areas and other advantages.
作者
钟芳桃
石文泽
卢超
陈果
沈佳卉
胡婧
ZHONG Fangtao;SHI Wenze;LU Chao;CHEN Guo;SHEN Jiahui;HU Jing(Key laboratory of Nondestructive Testing of Ministry of Education,Nanchang Hangkong University,Nanchang 330063,China;School of Physics Electronic Information Engineering,Gannan Normal University,Ganzhou 341000,China;Power China Jiangxi Electric Power Construction Co.,Ltd.,Nanchang 330096,China)
出处
《无损检测》
CAS
2021年第7期50-56,共7页
Nondestructive Testing
基金
国家自然科学基金资助项目(12064001,51705231)
江西省自然科学基金重点项目(20192ACBL20052)。
关键词
航空金属薄板
分层缺陷
频率-波数域算法
全聚焦法成像
aviation metal sheet
delamination defect
frequency-wavenumber domain algorithm
total focusing method imaging
