19 April 2011 Development of a C-Scan phased array ultrasonic imaging system using a 64-element 35MHz transducer
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Abstract
Phased array imaging systems provide the features of electronic beam steering and dynamic depth focusing that cannot be obtained with conventional linear array systems. This paper presents a system design of a digital ultrasonic imaging system, which is capable of handling a 64-element 35MHz center frequency phased array transducer. The system consists of 5 parts: an analog front-end, a data digitizer, a DSP based beamformer, a computer controlled motorized linear stage, and a computer for post image processing and visualization. Using a motorized linear stage, C-scan images, parallel to the surface of scanned objects may be generated. This digital ultrasonic imaging system in combination a 35 MHz phased array appears to be a promising tool for NDT applications with high spatial resolution. It may also serve as an excellent research platform for high frequency phased array design and testing as well as ultrasonic array signal algorithm developing using system's raw RF data acquisition function.
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Fan Zheng, Fan Zheng, Changhong Hu, Changhong Hu, Lequan Zhang, Lequan Zhang, Kevin Snook, Kevin Snook, Yu Liang, Yu Liang, Wesley S. Hackenberger, Wesley S. Hackenberger, Ruibin Liu, Ruibin Liu, Xuecang Geng, Xuecang Geng, Xiaoning Jiang, Xiaoning Jiang, K. Kirk Shung, K. Kirk Shung, } "Development of a C-Scan phased array ultrasonic imaging system using a 64-element 35MHz transducer", Proc. SPIE 7983, Nondestructive Characterization for Composite Materials, Aerospace Engineering, Civil Infrastructure, and Homeland Security 2011, 79833E (19 April 2011); doi: 10.1117/12.880520; https://doi.org/10.1117/12.880520
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