A STUDY ON EFFECT OF BOWING ON A SCANS USING PULSE ECHO ULTRASONIC TECHNIQUE

Sujatha Kumaran, Sheela Rani.B

Abstract: This paper deals with the study of A Scans obtained from sub assembly head top used in a Prototype Fast Breeder Reactor. A sub-assembly head top is the specimen used to determine the effect of bowing on A Scans. The condition of bowing has been simulated. The A Scans are obtained under normal conditions of the ring and also under simulated bowing conditions. The envelope of the A Scans under both the conditions have been compared. It is found that the two edges of the ring are clearly indicated through the A Scan. Under normal conditions, the two edges have a slight difference in the depth. This is due to the constructional feature of the object. But under simulated conditions, the two edges are obtained at two different depths, of magnitude higher than the normal conditions. The shift in the A Scans is clearly seen It is observed that greater the tilt given for simulated bowing, larger is the shift in the depth of the two edges of the ring.

Keywords: Ultrasonic, Pulse Echo, Bowing, A Scans

DOI: https://doi.org/10.15623/ijret.2013.0211087