Analysis of influencing factors of phased array ultrasonic sector scan

In order to improve the quality of phased array ultrasonic sector scan imaging in defect detection, the factors affecting the imaging quality are analyzed, and the effects of focal length, deflection angle and aperture on the imaging quality are studied. The control variable method is used for experimental verification, and the experimental results are analyzed. The research results are of reference significance for optimizing the parameter setting of phased array ultrasonic sector scanning and improve the imaging quality.