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A high efficiency adaptive ultrasonic array imaging method with sensitivity correction for curved structures

delete2024-10-01
delete0
PRE
AI
J
Jun Wang
周
周正干 (Zhenggan Zhou)
Y
Yang Li
G
Gongpeng Yang
W
Wenbin Zhou *
DOI:10.1016/j.measurement.2024.115322delete
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摘要

摘要

En 中文
The adaptive ultrasonic array imaging can be used for defects detection with unknown sample profile. To solve the problems of low computational efficiency and difficult quantitative evaluation in detection, this paper presents a high efficiency adaptive ultrasonic array imaging method with sensitivity correction. For surface reconstruction, the vector coherence technique has been used to correct the plane wave imaging of sample surface with single emission, which improves the imaging quality and efficiency. A robust fitting method is proposed based on Random Sample Consensus algorithm to reconstruct the surface after the surface pixel recognition. To reduce the beam path calculation time, a prediction search method is developed, whose time consumption is reduced by 97.2 % compared with the global traversal method with the same results. The sensitivity correction algorithm is proposed based on the ultrasonic propagation model, which makes the amplitude difference of defects in different regions is less than 0.8 dB.
Keyword:
Non-destructive testing
Ultrasonic array
Curved structure
Adaptive imaging
High efficiency

期刊

Measurement 封面图
Measurement
IF:
5.6
论文数:
2.1W
被引数:
5.4W

机构

B
Beihang University
学者数:
5.2W
论文数: 4.1W
被引数: 37
引用论文

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