MATEC Web Conf.
Volume 71, 2016The International Conference on Computing and Precision Engineering (ICCPE 2015)
|Number of page(s)||5|
|Section||Modeling, Numerical Simulation and Optimization|
|Published online||02 August 2016|
Parametric Study of Defect Detection in Pipes with Bend Using Guided Ultrasonic Waves
1 School of Engineering, Monash University Malaysia, Jalan Lagoon Selatan, 47500 Selangor, Malaysia
2 Department of Mechanical, Materials and Manufacturing Engineering, University of Nottingham Malaysia Campus, Jalan Broga, 43500 Semenyih, Malaysia
a Corresponding author: firstname.lastname@example.org
The propagation behaviour of guided ultrasonic waves in a steel pipe with welded bend is studied by finite element simulation. The effectiveness of the longitudinal L(0,2) and torsional T(0,1) guided waves in detecting circumferential cut near the weld is investigated. In order to identify the presence of the defect, the reflection strength due to the cut is studied. The geometry of the weld is constructed based on common V-bevel butt joints and the anisotropy of the 316L stainless steel weld is included to correctly predict the scattering of ultrasonic waves. The finite element model is built to allow high accuracy. Detection of small circumferential cut (up to 60° circumferential extent) can be achieved with longitudinal L(0,2) mode. Detection of moderate to large circumferential cut can be achieved by torsional T(0,1) or longitudinal L(0,2) modes, with T(0,1) mode preferred due to its less mode conversion to higher order modes.
© The Authors, published by EDP Sciences, 2016
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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