METHOD FOR DETERMINING THE SIZE OF A DEFECT DURING ULTRASONIC TESTING USING A PHASED ARRAY TRANSDUCER Russian patent published in 2021 - IPC G01N29/44 

FIELD: ultrasonic testing.

SUBSTANCE: invention is intended for determining the size of a defect during ultrasonic testing using a phased array transducer. The substance of the invention lies in the fact that the determination of the size of the defect during ultrasonic testing using a phased array sensor is based on the analysis of S, C or D scans or their combination, while in a heated or cooled test object, the true dimensions of the defect Р₀ are calculated by the formula Р₀=k(1/Т₀-1/Т)+Р, where P is the size of the acoustic image of the defect on the scan at temperature T, k is the coefficient equal to the slope of the linear dependence Р*(1/Т*), determined experimentally on a tuning sample with a known defect by slowly cooling or heating the sample and determining the size of the acoustic image P* on scans at different temperatures T*, Т₀ is the temperature at which the size of the acoustic image of a defect on the tuning sample coincides with its true size.

EFFECT: reduction of the error in determining the size of a defect detected in a heated or cooled industrial test object during ultrasonic flaw detection with a phased array sensor in the process of sorting.

3 cl, 1 dwg