Title
Recent developments in guided wave travel time tomography
Author
van Zon, A.T.
Volker, A.W.F.
Publication year
2014
Abstract
The concept of predictive maintenance using permanent sensors that monitor the integrity of an installation is an interesting addition to the current method of periodic inspections. Guided wave tomography had been developed to create a map of the wall thickness using the travel times of guided waves. It can be used for both monitoring and for inspection of pipe-segments that are difficult to access, for instance at the location of pipe-supports. An important outcome of the tomography is the minimum remaining wall thickness, as this is critical in the scheduling of a replacement of the pipe-segment. In order to improve the sizing accuracy we have improved the tomography scheme. A number of major improvements have been realized allowing to extend the application envelope to pipes with a larger wall thickness and to larger distances between the transducer rings. Simulation results indicate that the sizing accuracy has improved and that is now possible to have a spacing of 8 meter between the source-ring and the receiver-ring. Additionally a reduction of the number of sensors required might be possible as well. © 2014 AIP Publishing LLC.
Subject
Fluid Mechanics Chemistry & Energetics
PID - Process & Instrument Development
TS - Technical Sciences
Physics
Industrial Innovation
Corrosion Monitoring
Dispersion
Inversion
Guided electromagnetic wave propagation
Nondestructive examination
Sensors
Ultrasonic testing
Guided wave tomographies
Periodic inspection
Predictive maintenance
Sizing accuracy
Transducer rings
Travel time tomography
To reference this document use:
http://resolver.tudelft.nl/uuid:61411a90-456b-43fd-a64b-a26191d3f38d
TNO identifier
513409
Publisher
American Institute of Physics
ISBN
9780735412118
ISSN
1551-7616
Source
40th Annual Review of Progress in Quantitative Nondestructive Evaluation, QNDE 2013, Incorporating the 10th International Conference on Barkhausen and Micro-Magnetics, ICBM 2013, 21-26 July 2013, Baltimore, MD, USA, 1581 33, 201-208
Document type
conference paper