Study on Ultrasonic P-Scan Imaging Technology for Rotary Parts Used in Coal Mine Machinery

Aiming at implementing numeralization, automatization and imaging of ultrasonic testing in rotary parts used in coal mine machinery, ultrasonic P-scan imaging technology of rotary parts is studied in this paper. Searching pixel units according to the incident direction of ultrasonic, and correcting non-isotropic resolution images to isotropic ones with linear interpolation algorithm to, multi-layer B-/C-/D-scan and 3-D projection view imaging are achieved. Experimental results show P-scan image could accurately reflect the localization, quantification and orientation of flaws.