Ultrasonic testing technology has been widely used in the quality control of industrial products and the reliability testing methods of materials. Therefore, to ensure the good completion of the work, it is necessary to ensure the accuracy of the ultrasonic flaw Detector used, and the verification device of the ultrasonic flaw Detector is its It is particularly important to ensure the accuracy of the value transfer standard at the upper level.
The article "Discussion on Calibration Method of Ultrasonic Flaw Detector Verification Device" combines the relevant requirements of JJG746-2004 "Ultrasonic Flaw Detector" verification regulations and actual working conditions, and studies the calibration method of the two main parameters of the verification device, the nominal frequency and attenuation , and the rationality and accuracy of the calibration method are experimentally explored, and the final test results verify the feasibility of the calibration method.
The following is the specific calibration method of frequency and attenuation
Calibration method for output frequency accuracy
Calibration method for output attenuation accuracy
