The invention provides an ultrasonic
phased array full-focusing mechanical arm scanning method for seamless steel rail
welding seam defects, and relates to the field of
welding seam detection.The ultrasonic
phased array full-focusing mechanical arm scanning method comprises the steps that S1, a flaw detection car advances on a steel rail
route, a
laser scanner synchronously scans a steel rail, and the flaw detection car stops when the surplus height of a steel rail
welding seam is collected; s2, the upper computer corrects the preset scanning path
point set through an automatic guide positioning
algorithm to obtain a new scanning path
point set, and a maintenance path is generated; s3, the upper computer drives the mechanical arm to clamp the ultrasonic
phased array probe to scan along the maintenance path; and S4, the ultrasonic phased array displays a real-time full-focusing imaging picture according to the scanned and acquired
signal data and can
record the detected defects. According to the method, the full-section position of the steel rail weld defect is automatically scanned, the mechanical arm scanning path is corrected by using an automatic guide
positioning technology, and the positioning error influence of a mechanical arm scanning program in automatic application is solved.