A pipe with protective cladding and insulation was simplified to a four-layered structure when the diameter of a pipe is large enough, and analytical solutions for sinusoidal and pulsed wave excitation were derived. Simulation implemented by using the analytical solutions showed that sinusoidal excitation is not appropriate for the monitoring of inner thinning, while pulsed eddy current method can be used to measure wall-thickness regardless of inner or outer thinning by using the decay rate of log(Bz) as a particular parameter to evaluate wall thickness. It was assumed that the diameter of a pipe was large enough and the piping system with protective logging and insulator was simplified to a four-layered structure. Analytical solutions for sinusoidal and pulsed wave excitation were derived. Simulation by using the fast analytical solutions showed that sinusoidal excitation is not appropriate for the monitoring of inner side wall thinning, while pulsed eddy current method can be applied to measure wall-thickness regardless of inner or outer thinning.
Simulation for the assessment of wall thinning using eddy current method
Simulation zur Bewertung des Wandabtrags mittels Wirbelstromverfahren
2011
8 Seiten, 9 Bilder, 1 Tabelle, 5 Quellen
Conference paper
Storage medium
English
Improvements in Zonal Detached Eddy Simulation for Wall Modeled Large Eddy Simulation
Online Contents | 2015
|Eddy current damper simulation and modeling
British Library Conference Proceedings | 2001
|Large-Eddy Simulation of Pseudo-Shock Wave using Multi-Wall Method
British Library Conference Proceedings | 2013
|