Ultrasonic flow detection for small and medium diameter pipe bends

摘要

This paper presents a new method of ultrasonic flaw detection for small andrnmedium diameter pipe bends with thin pipe walls. Based on detailed analysisrnof frequently encountered problems in ultrasonic flaw detector for such pipernbends, a double piezocrystal ultrasonic detector with a concave surface hasrnbeen developed and proved to be efficient for practical use.