Correlation between the in-process acoustic emission method and the weight-loss method of measuring corrosion

K. H.W. Seah; Kah Bin Lim; C. H. Chew; Swee Hin Teoh

doi:10.1117/12.156455

22 September 1993 Correlation between the in-process acoustic emission method and the weight-loss method of measuring corrosion

K. H.W. Seah, Kah Bin Lim, C. H. Chew, Swee Hin Teoh

Author Affiliations +

Proceedings Volume 2101, Measurement Technology and Intelligent Instruments; (1993) https://doi.org/10.1117/12.156455
Event: Measurement Technology and Intelligent Instruments, 1993, Wuhan, China

Abstract

A series of experiments were conducted in which corrosion of mild steel in dilute hydrochloric acid was measured by the inprocess acoustic emission method as well as the conventional weightloss method. Results indicate that there is a marked correlation between these two methods of corrosion measurement. It is possible to detect the different stages of corrosion namely uniform corrosion nonuniform corrosion and intense localised corrosion based on the observed acoustic emission count rate. The acoustic emission signals emitted from the corrosion activities were of sufficient magnitude to be easily detected by piezoelectric transducers. The results demonstrate that the acoustic emission technique can be used to monitor and predict the rate of corrosion.

Citation Download Citation

K. H.W. Seah, Kah Bin Lim, C. H. Chew, and Swee Hin Teoh "Correlation between the in-process acoustic emission method and the weight-loss method of measuring corrosion", Proc. SPIE 2101, Measurement Technology and Intelligent Instruments, (22 September 1993); https://doi.org/10.1117/12.156455

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