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http://dx.doi.org/10.14773/cst.2021.20.6.403

Reliability Evaluation of ER Type Corrosion Sensor for Monitoring Corrosion of Piping System Under Accelerated Corrosion Environment  

Hwang, Hyun-Kyu (Graduate School, Mokpo National Maritime University)
Shin, Dong-Ho (Graduate School, Mokpo National Maritime University)
Kim, Heon-Hui (Division of Marine Engineering, Mokpo National Maritime University)
Lee, Jung-Hyung (Division of Marine Engineering, Mokpo National Maritime University)
Publication Information
Corrosion Science and Technology / v.20, no.6, 2021 , pp. 403-411 More about this Journal
Abstract
In this study, the reliability of a commercial ER-type corrosion sensor was evaluated under an accelerated corrosion environment to verify its suitability for application in monitoring of ship's seawater piping system. A closed-loop pump piping testbed was designed and constructed to compare the wall thickness reduction of the pipe and the response from the sensor. The sensor was attached inside the pipe near the outlet of the pump that was exposed to a 3.5% NaCl solution with or without copper accelerated acetic acid (CASS). The results demonstrated that the presence of CASS significantly increased the corrosivity of the solution as well as the thickness reduction of the pipe, as expected. On the other hand, the corrosion products formed by the solution with CASS were thicker compared with those without CASS. The sensor response to temperature variation was found to be a clear linear relationship for the solution without CASS but there was a non-linear relationship where CASS was present.
Keywords
CASS Solution; Corrosion Monitoring; Temperature; ER Sensor; Linear Fitting;
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Times Cited By KSCI : 1  (Citation Analysis)
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