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research-article

Damage detection through pipe bends

[+] Author and Article Information
Bouko Vogelaar

Department of Mechanical Engineering, Eindhoven University of Technology, Groene Loper 15, 5600 MB Eindhoven, The Netherlands
b.b.s.a.vogelaar@tue.nl

Michael Golombok

Shell Global Solutions International B.V., Kessler Park 1, 2288 GS Rijswijk, The Netherlands
michael.golombok@shell.com

1Corresponding author.

ASME doi:10.1115/1.4037120 History: Received June 02, 2016; Revised June 09, 2017

Abstract

Axial pipeline defects are detectable from torsional guided wave reflections through 90o elbows. We demonstrate that damage localization in carbon steel pipes with a so-called standard long and very long radius elbow is possible using a single permanently installed source-receiver pair. We use dispersion imaging to determine why this is not possible in a short radius elbow pipe. Although the remote damage is detected in a standard short radius bend pipe, there is not enough signal for damage localization. Since pipeline bends are normally of at least standard long radius, the acoustical behavior is similar to that previously determined in straight pipes. The reflective method can thus be applied fruitfully to monitor structural health beyond industrial pipeline bends.

Copyright (c) 2017 by ASME
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