1. Three-dimensional reconstruction of ceramic membrane with internal defects based on ultrasound imaging technique applying triangular matrix-synthetic aperture focusing
- Author
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Jian Sun, Ding Yu, Yanjun Zhang, Juntong Xi, Wang Ning, and Zhu Xinglong
- Subjects
010302 applied physics ,Materials science ,business.industry ,Phased array ,Aperture ,Process Chemistry and Technology ,3D reconstruction ,Detector ,Triangular matrix ,02 engineering and technology ,021001 nanoscience & nanotechnology ,01 natural sciences ,Surfaces, Coatings and Films ,Electronic, Optical and Magnetic Materials ,Length measurement ,Optics ,Ceramic membrane ,visual_art ,0103 physical sciences ,Materials Chemistry ,Ceramics and Composites ,visual_art.visual_art_medium ,Ceramic ,0210 nano-technology ,business - Abstract
To realize a three-dimensional (3D) visual display and evaluate the internal defects of a ceramic hollow plate membrane, a method for creating a 3D reconstruction of the internal defects based on an ultrasound imaging technique applying triangular matrix–synthetic aperture focusing is proposed. First, a phased array detector is used to scan the surface of the ceramic membrane, and ultrasound imaging is achieved based on the triangular matrix–synthetic aperture focusing technology. The acquired B-scan images are pre-processed and a 3D reconstruction is achieved based on the contours of the internal defects. Finally, a 3D visualization of the internal defects of a hollow plate ceramic membrane is realized. The use of a triangular matrix focusing method can improve the detection efficiency because the amount of data acquired and the number of calculations are reduced by nearly half. In addition, the synthetic aperture focusing method can ensure a high imaging resolution, which leads to an improved recognition accuracy of the defect size. As a result, the error of the diameter measurements of the inner hole defects ranges between 2% and 3%, and the error of the diameter and length measurements of the crack line defects ranges between 2% and 4%. Experimental results with real datasets are presented to demonstrate the efficiency and accuracy of our method as compared with traditional methods.
- Published
- 2020