1D profiling using highly dispersive guided waves

1D profiling using highly dispersive guided waves

Volker, A.W.F.
van Zon, A.T.
Hsu, Z.C.
van den Boogert, L.

Bond, L.J. (editor)
Chimenti, D.E. (editor)

2016

Corrosion is one of the industries major issues regarding the integrity of assets. Currently inspections are conducted at regular intervals to ensure a sufficient integrity level of these assets. Cost reduction while maintaining a high level of reliability and safety of installations is a major challenge. There are many situations where the actual defect location is not accessible, e.g., a pipe support or a partially buried pipe. In case of bottom of the line corrosion, i.e., a single corrosion pit, a simpler approach may be followed. Guided waves are propagated around the circumference of a pipe. In case of wall loss, the phase of the signal changes which is used to estimate the local wall thickness profile. A special EMAT sensor has been developed, which works in a pit-catch configuration at the 12 o'clock position using highly dispersive guided waves. In order to improve the sensitivity, an inversion in performed on multiple orders of circumferential passes. Experimental results are presented on different pipes containing artificial and real defects.

Observation, Weapon & Protection Systems
AS - Acoustics & Sonar
TS - Technical Sciences
Materials
Industrial Innovation

http://resolver.tudelft.nl/uuid:eaca7bb3-f8f4-4d9c-9933-10d1994201bd

572401

American Institute of Physics AIP

9780735413535

0094-243X

42nd Annual Review of Progress in Quantitative Nondestructive Evaluation, QNDE 2015, Incorporating the 6th European-American Workshop on Reliability of NDE, 26-31 July 2015, Minneapolis, MN, USA, 1706

AIP Conference Proceedings

030001

conference paper