Analysis of acoustic emission parameters from corrosion of AST bottom plate in field testing
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Author list: Jomdecha C., Jirarungsatian C., Suwansin W.
Publisher: Springer Science and Business Media, LLC
Publication year: 2015
Volume number: 158
Start page: 383
End page: 393
Number of pages: 11
ISBN: 9781493912384
ISSN: 0930-8989
eISSN: 0930-8989
Languages: English-Great Britain (EN-GB)
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Abstract
Field testing of aboveground storage tank (AST) to monitor corrosion of the bottom plate is presented in this chapter. AE testing data of the ten AST with different sizes, materials, and products were employed to monitor the bottom plate condition. AE sensors of 30 and 150 kHz were used to monitor the corrosion activity of up to 24 channels including guard sensors. Acoustic emission (AE) parameters were analyzed to explore the AE parameter patterns of occurring corrosion compared to the laboratory results. Amplitude, count, duration, and energy were main parameters of analysis. Pattern recognition technique with statistical was implemented to eliminate the electrical and environmental noises. The results showed the specific AE patterns of corrosion activities related to the empirical results. In addition, plane algorithm was utilized to locate the significant AE events from corrosion. Both results of parameter patterns and AE event locations can be used to interpret and locate the corrosion activities. Finally, basic statistical grading technique was used to evaluate the bottom plate condition of the AST. ฉ Springer Science+Business Media New York 2015.
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