ULTRASONIC WAVE DELAYED VALUE DETERMINING DEVICE AND ULTRASONIC WAVE DELAYED VALUE DETERMINING METHOD AND DEFECT POSITION OF WELDING PORTION DETERMINING METHOD

摘要

The present invention relates to an ultrasonic delay value determination device. Specifically, according to an embodiment of the present invention, delay value generation for generating a delay value for a reference time point related to a time point at which each of a plurality of transducers irradiate an ultrasonic wave toward a predetermined point of a welding part of a pipe based on a predetermined algorithm and a deformation degree value extraction unit for extracting a deformation degree value of the irradiated ultrasonic wave from a result obtained by irradiating the ultrasonic waves toward the point according to the delay value by each of the plurality of transducers, and generating the delay value A plurality of different delay values are obtained from the unit, and a plurality of deformation degree values in which each of the plurality of delay values are reflected are obtained from the deformation degree value extraction unit, and the maximum value of the plurality of obtained deformation degree values is obtained. An ultrasonic delay value determining apparatus may be provided, comprising a delay value determining unit that determines a delay value causing a deformation degree value as a delay value for the point.