期刊
SENSORS
卷 23, 期 13, 页码 -出版社
MDPI
DOI: 10.3390/s23136007
关键词
ultrasonic nondestructive testing; phased arrays; acoustic arc arrays; concave arrays; convex arrays; flexible phased arrays; total focusing method; angular resolution; Rayleigh criterion
This study investigates the angular resolution of concave and convex acoustic arrays in ultrasonic testing using the total focusing method. Computer modeling and in situ experiments were conducted to validate the results.
Currently, phased arrays are increasingly used in ultrasonic nondestructive testing. One of the most important parameters of ultrasonic nondestructive testing with the application of phased arrays is the angular resolution. This paper presents the results of studies of the angular resolution of concave and convex acoustic arrays in ultrasonic testing with the application of the total focusing method. Computer modeling of concave and convex acoustic arrays consisting of 16, 32 and 64 elements with distances between elements of 0.5 and 1 mm and arc radii of 30 and 60 mm have been performed. The results obtained by computer modeling were confirmed via in situ experiments.
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