Development of a technique for applying pa and tofd methods for mechanized ultrasonic testing of welded joints of main pipelines using the USD-60FR-16/128 flaw detector

Abstract

A technique was developed and tested for selecting beam steering and focusing methods for mechanized ultrasonic testing of circumferential welds of pipelines up to 16 mm thick using phased antenna arrays. Criteria for the identification and interpretation of defects on the time-of-flight diffraction scans in the form of an atlas of defects were developed. The study was carried out using a new domestic flaw detector USD-60FR-16/128.