- Title
- Efficient evaluation of remaining wall thickness in corroded water pipes using pulsed Eddy current data
- Creator
- Nguyen, Linh; Miro, Jaime Valls
- Date
- 2020
- Type
- Text; Journal article
- Identifier
- http://researchonline.federation.edu.au/vital/access/HandleResolver/1959.17/175163
- Identifier
- vital:14933
- Identifier
-
https://doi.org/10.1109/JSEN.2020.3007868
- Identifier
- ISBN:1530-437X (ISSN)
- Abstract
- In order to analyse failures of an ageing water pipe, some methods such as the loss-of-section require remaining wall thickness (RWT) along the pipe to be fully known, which can be measured by the magnetism based non-destructive evaluation sensors though they are practically slow due to the magnetic penetrating process. That is, fully measuring RWT at every location in a water pipe is not really practical if RWT inspection causes disruption of water supply to customers. Thus, this paper proposes a new data prediction approach that can increase amount of RWT data of a corroded water pipe collected in a given period of time by only measuring RWT on a part (e.g. 20%) of the total pipe surface area and then employing the measurements to predict RWT at unmeasured area. It is proposed to utilize a marginal distribution to convert the non-Gaussian RWT measurements to the standard normally distributed data, which can then be input into a 3-dimensional Gaussian process model for efficiently predicting RWT at unmeasured locations on the pipe. The proposed approach was implemented in two real-life in-service pipes, and the obtained results demonstrate its practicality. © 2001-2012 IEEE.
- Publisher
- Institute of Electrical and Electronics Engineers Inc.
- Relation
- IEEE Sensors Journal Vol. 20, no. 23 (2020), p. 14465-14473
- Rights
- All metadata describing materials held in, or linked to, the repository is freely available under a CC0 licence
- Rights
- Copyright IEEE
- Rights
- Open Access
- Subject
- Cast iron pipes; Gaussian process; Marginal distribution; Non-destructive testing/evaluation; Remaining wall thickness; Water pipes; 0205 Optical Physics; 0906 Electrical and Electronic Engineering
- Full Text
- Reviewed
- Funder
- This work was supported by the Operationalization Project funded by Sydney Water Corporation.
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