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research-article

REFLECTION AND MODE CONVERSION OF FUNDAMENTAL TORSIONAL GUIDED WAVE MODE FROM LACK OF BONDING IN INDUCTION PRESSURE WELDING (IPW)

[+] Author and Article Information
DEEPESH V

Non-Destructive Testing Lab, Quality department Bharat Heavy Electricals Limited Trichy, Tamil Nadu, India-620015
d2208881@gmail.com

Krishnan Balasubramaniam

Centre for Non-Destructive Evaluation, Machine Design Section, Department of Mechanical Engineering, Indian Institute of Technology Madrass, Chennai, Tamil Nadu-600036
balas@iitm.ac.in

Prabhu Rajagopal

Centre for Non-Destructive Evaluation, Machine Design Section, Department of Mechanical Engineering, Indian Institute of Technology Madrass, Chennai, Tamil Nadu-600036
prajagopal@iitm.ac.in

1Corresponding author.

ASME doi:10.1115/1.4036852 History: Received November 01, 2016; Revised May 18, 2017

Abstract

Interaction of fundamental torsional ultrasonic pipe guided mode T (0, 1) from defects caused by Induction Pressure Welding (IPW) process is studied using 3-D Finite Element (FE) analysis validated by experiments. Defects are assumed as cross-sectional notches along the weld bond-line, and both surface-breaking and embedded features are considered. Results show that T (0, 1) mode reflection from weld defects is strongly influenced by features of the weld itself. However, with supplementary results such as the mode-converted flexural F (1, 3) and F (1, 2) modes and circumferential variation of T (0, 1) reflection, there is potential for an effective screening solution.

Copyright (c) 2017 by ASME
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