Imaging of subsurface defects with surface wave SAFT based on an array pickup EMAT

被引：1

作者：

Deng, Jie ^{[1
]}

Pei, Cuixiang ^{[1
]}

Zhang, Yuange ^{[1
]}

Qu, Yinqiang ^{[1
]}

Deng, Ke ^{[1
]}

Chen, Hong-En ^{[1
]}

Chen, Zhenmao ^{[1
]}

机构：

[1] Xi An Jiao Tong Univ, Shaanxi ERC NDT & Struct Integr Evaluat, State Key Lab Strength & Vibrat Mech Struct, Xian 710049, Peoples R China

来源：

INTERNATIONAL JOURNAL OF APPLIED ELECTROMAGNETICS AND MECHANICS | 2024年 / 74卷 / 04期

基金：

美国国家科学基金会;

关键词：

Updated SAFT; array pickup EMAT; surface wave; subsurface defects; ELECTROMAGNETIC ACOUSTIC TRANSDUCER;

D O I：

10.3233/JAE-230148

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

It is necessary to detect subsurface defects for a key metallic structural component especially a multilayer coating to ensure its structural integrity. In this paper, an imaging algorithm using the synthetic aperture focusing technique (SAFT) is developed for processing surface wave signals of array pickup electromagnetic acoustic transducer (EMAT) to improve its signal-to-noise ratio and detectability of subsurface defects. In addition, an array pickup unit of surface wave EMAT with gap configuration is proposed to receive multi-channel surface wave signals and is optimized by adjusting its coil configuration such as number, spacing and detection distance in order to obtain better SAFT imaging result. Both simulation and measured EMAT surface wave signals are used for the defect imaging and all the results verified the validity and the efficiency of the proposed method.

引用

页码：415 / 428

页数：14

共 17 条

[1] Ultrasonic inspection of curved structures with a hemispherical-omnidirectional ultrasonic probe via linear scan SAFT imaging [J].

Chen, Qiping ;

Xie, Yinfei ;

Cao, Huanqing ;

He, Zike ;

Wang, Dawei ;

Guo, Shifeng .

NDT & E INTERNATIONAL, 2022, 129

[2] Near-surface defect detection in additively manufactured components using laser induced phased arrays with surface acoustic wave crosstalk suppression [J].

Davis, Geo ;

Stratoudaki, Theodosia ;

Lukacs, Peter ;

Riding, Matthew W. ;

Al Fuwaires, Ahmed ;

Kamintzis, Panagiotis ;

Pieris, Don ;

Keenan, Alan ;

Wilcox, Paul ;

Pierce, Gareth ;

Macleod, Charles ;

Williams, Stewart .

MATERIALS & DESIGN, 2023, 236

[3] Development of an array pickup electromagnetic acoustic transducer and application to surface wave visualization [J].

Deng, Jie ;

Pei, Cuixiang ;

Zhang, Yuange ;

Liu, Tianhao ;

Chen, Hong-En ;

Chen, Zhenmao .

INTERNATIONAL JOURNAL OF APPLIED ELECTROMAGNETICS AND MECHANICS, 2023, 71 :S521-S530

[4] Artificial Neural Network Based Sub-surface Defect Detection in Glass Fiber Reinforced Polymers: Nondestructive Evaluation 4.0 [J].

Dua, Geetika ;

Arora, Vanita ;

Mulaveesala, Ravibabu .

SENSING AND IMAGING, 2023, 24 (01)

[5] Optimization of interdigital transducers for the generation of surface acoustic waves over a large bandwidth (20-125 MHz) [J].

Fall, Dame ;

Duquennoy, Marc ;

Ouaftouh, Mohammadi ;

Smagin, Nikolay ;

Piwakowski, Bogdan ;

Jenot, Frederic .

SENSORS AND ACTUATORS A-PHYSICAL, 2018, 273 :303-310

[6] Quantitative ultrasonic testing for near-surface defects of large ring forgings using feature extraction and GA-SVM [J].

Guan, Shanyue ;

Wang, Xiaokai ;

Hua, Lin ;

Li, Li .

APPLIED ACOUSTICS, 2021, 173

[7] Enhancement of signal amplitude of surface wave EMATs based on 3-D simulation analysis and orthogonal test method [J].

Kang, Lei ;

Dixon, Steve ;

Wang, Kaican ;

Dai, Jingmin .

NDT & E INTERNATIONAL, 2013, 59 :11-17

[8] Noncontact testing and imaging of internal defects with a new Laser-ultrasonic SAFT method [J].

Kou, Xing ;

Pei, Cuixiang ;

Liu, Ting ;

Wu, Shangzi ;

Liu, Tianhao ;

Chen, Zhenmao .

APPLIED ACOUSTICS, 2021, 178

[9] Fast and high-resolution laser-ultrasonic imaging for visualizing subsurface defects in additive manufacturing components [J].

Lv, Gaolong ;

Yao, Zhijun ;

Chen, Dan ;

Li, Yehai ;

Cao, Huanqing ;

Yin, Anmin ;

Liu, Yanjun ;

Guo, Shifeng .

MATERIALS & DESIGN, 2023, 225

[10] Characterization of planar flaws by an integrated approach using phased array and synthetic aperture focusing technique [J].

Nanekar, Paritosh ;

Jothilakshmi, N. ;

Kumar, Anish ;

Jayakumar, T. .

MEASUREMENT, 2019, 147

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