Wedge two-layer medium ultrasonic plane wave compounding imaging based on sign multiply coherence factor combined with delay multiply and sum beamforming. (April 2022)

• Record Type: Journal Article
• Authors: Luo, Lin; Tan, Yuanhao; Li, Jinlong; Zhang, Yu; Gao, Xiaorong
• Is Part Of: NDT & E international. Volume 127(2022)
• Publication Date: 2022-04
• Subjects: AMV adaptive spatial-smoothed MV -- API Array Performance Index -- CF Coherence Factor -- CPWC Coherent Plane wave Compounding -- CR Contrast Ratio -- DAS Delay-and-sum -- DMAS Delay Multiply and Sum -- DMAS-SCF SCF weighted DMAS -- DMAS-SMCF SMCF weighted DMAS -- FMC Full-Matrix Capture -- FWHM Full Width at Half Maximum -- GCF Generalized Coherence Factor -- MV Minimum Variance -- NDT Non-Destructive Testing -- PCF Phase Coherence Factor -- PWAPP PWI adapted in postprocessing -- PWI Plane Wave Imaging -- SCF Sign Coherence Factor -- SMCF Sign Multiply Coherence Factor -- TFM Total Focus Method -- USCF United Sign Coherence Factor; Ultrasonic plane wave imaging -- Sign multiply coherence factor -- Delay multiply and sum -- Wedge two-layer medium; Nondestructive testing -- Periodicals; Contrôle non destructif -- Périodiques; Electronic journals; 620.1127
• DOI: 10.1016/j.ndteint.2021.102601
• Languages: English
• ISSNs: 0963-8695

Abstract

Abstract: Ultrasonic phased array coherent plane wave compounding has a fast imaging speed, but the imaging quality is severely affected by noise, especially the imaging quality in the case of wedge two-layer medium, which is a problem worthy of study. In this paper, a wedge two-layer medium ultrasonic coherent plane wave compounding imaging based on the sign coherence weighting delay multiply and sum (DMAS) beamforming is proposed. The sign multiply coherence factor (SMCF) is proposed according to the correlation of the received data. The experimental results show that the SMCF weighted DMAS (DMAS-SMCF) method can significantly improve the contrast ratio and resolution of wedge two-layer medium plane wave imaging, and show its application capability in related applications.