In-situ monitoring of pitting corrosion on vertically positioned 304 stainless steel by analyzing acoustic-emission energy parameter

Kaige Wu; Woo Sang Jung; Jai Won Byeon

doi:10.1016/j.corsci.2015.12.010

In-situ monitoring of pitting corrosion on vertically positioned 304 stainless steel by analyzing acoustic-emission energy parameter

Kaige Wu
, Woo Sang Jung
, Jai Won Byeon

Dept. of Mechanical Convergence Engineering

Research output: Contribution to journal › Article › peer-review

69 Scopus citations

Abstract

The acoustic emission (AE) energy was analyzed to monitor the pitting process on a vertically positioned 304-stainless steel. The gravity-dependent morphology of the elongated corrosion pits was observed. A scatter plot of the duration and energy indicated two AE clusters with different energy levels. There was a time delay after the detection of the low-energy hydrogen-bubble signals. Subsequently, high-energy signals were observed, whose AE source was attributed to large-scale cracks formed during the rupture of the elongated pit cover. An in-situ analysis of the AE energy evolution provided detailed insights into the corrosion process in relation to the specimen position.

Original language	English
Pages (from-to)	8-16
Number of pages	9
Journal	Corrosion Science
Volume	105
DOIs	https://doi.org/10.1016/j.corsci.2015.12.010
State	Published - 1 Apr 2016

Keywords

A. Stainless steel
B. Polarization
C. Pitting corrosion

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10.1016/j.corsci.2015.12.010

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title = "In-situ monitoring of pitting corrosion on vertically positioned 304 stainless steel by analyzing acoustic-emission energy parameter",

abstract = "The acoustic emission (AE) energy was analyzed to monitor the pitting process on a vertically positioned 304-stainless steel. The gravity-dependent morphology of the elongated corrosion pits was observed. A scatter plot of the duration and energy indicated two AE clusters with different energy levels. There was a time delay after the detection of the low-energy hydrogen-bubble signals. Subsequently, high-energy signals were observed, whose AE source was attributed to large-scale cracks formed during the rupture of the elongated pit cover. An in-situ analysis of the AE energy evolution provided detailed insights into the corrosion process in relation to the specimen position.",

keywords = "A. Stainless steel, B. Polarization, C. Pitting corrosion",

author = "Kaige Wu and Jung, \{Woo Sang\} and Byeon, \{Jai Won\}",

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year = "2016",

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doi = "10.1016/j.corsci.2015.12.010",

language = "English",

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T1 - In-situ monitoring of pitting corrosion on vertically positioned 304 stainless steel by analyzing acoustic-emission energy parameter

AU - Wu, Kaige

AU - Jung, Woo Sang

AU - Byeon, Jai Won

PY - 2016/4/1

Y1 - 2016/4/1

N2 - The acoustic emission (AE) energy was analyzed to monitor the pitting process on a vertically positioned 304-stainless steel. The gravity-dependent morphology of the elongated corrosion pits was observed. A scatter plot of the duration and energy indicated two AE clusters with different energy levels. There was a time delay after the detection of the low-energy hydrogen-bubble signals. Subsequently, high-energy signals were observed, whose AE source was attributed to large-scale cracks formed during the rupture of the elongated pit cover. An in-situ analysis of the AE energy evolution provided detailed insights into the corrosion process in relation to the specimen position.

AB - The acoustic emission (AE) energy was analyzed to monitor the pitting process on a vertically positioned 304-stainless steel. The gravity-dependent morphology of the elongated corrosion pits was observed. A scatter plot of the duration and energy indicated two AE clusters with different energy levels. There was a time delay after the detection of the low-energy hydrogen-bubble signals. Subsequently, high-energy signals were observed, whose AE source was attributed to large-scale cracks formed during the rupture of the elongated pit cover. An in-situ analysis of the AE energy evolution provided detailed insights into the corrosion process in relation to the specimen position.

KW - A. Stainless steel

KW - B. Polarization

KW - C. Pitting corrosion

UR - https://www.scopus.com/pages/publications/84959081714

U2 - 10.1016/j.corsci.2015.12.010

DO - 10.1016/j.corsci.2015.12.010

M3 - Article

AN - SCOPUS:84959081714

SN - 0010-938X

VL - 105

SP - 8

EP - 16

JO - Corrosion Science

JF - Corrosion Science

ER -

In-situ monitoring of pitting corrosion on vertically positioned 304 stainless steel by analyzing acoustic-emission energy parameter

Abstract

Keywords

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