On quantitative corrosion rate monitoring with ultrasound
File(s)
Published version
Author(s)
Zou, F
Cegla, Frederic
Type
Journal Article
Abstract
Wall-thickness loss rate (WTLR) is an important parameter that defines a corrosion process. The speed at which a WTLR can be determined is directly related to how quickly one can intervene in a process that is heading in the wrong direction. Ultrasonic testing has been widely used as a convenient and efficient technique for online corrosion monitoring. One of the key performance parameters of ultrasonic corrosion monitoring is detection speed. While WTLRs can be determined by fitting linear lines to wall-thickness loss (WTL) measurements, the presence of noise in the measurements makes it difficult to judge the confidence levels of the slopes that are calculated this way. In this paper, a statistics based approach for assessing the detection speeds that are achievable by ultrasonic corrosion monitoring systems is presented. Through the statistical analysis of experimental data, a state-of-the-art laboratory setup is shown to be able to detect both WTLRs and changes in WTLR that are of interest to industry (i.e. 0.1–0.2 mm/year) within 1–2 h.
Date Issued
2018-03-01
Date Acceptance
2018-02-05
Citation
Journal of Electroanalytical Chemistry, 2018, 812, pp.115-121
ISSN
1572-6657
Publisher
Elsevier
Start Page
115
End Page
121
Journal / Book Title
Journal of Electroanalytical Chemistry
Volume
812
Copyright Statement
© 2018 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/BY/4.0/)
Sponsor
Engineering & Physical Science Research Council (EPSRC)
Grant Number
EP/K033565/1
Subjects
Science & Technology
Physical Sciences
Chemistry, Analytical
Electrochemistry
Chemistry
Corrosion monitoring
Corrosion rate
Ultrasound
Piezoelectric transducer
Non-destructive evaluation
Structural health monitoring
0301 Analytical Chemistry
Publication Status
Published
Date Publish Online
2018-02-06