Fracture Behavior of Locally Corroded Steel Pipeline in District Heating System Using the Combination of Electrochemistry and Fracture Mechanics

Seon Hong Kim; Yoon Sik So; Jung Gu Kim

doi:10.1007/s12540-019-00481-2

Fracture Behavior of Locally Corroded Steel Pipeline in District Heating System Using the Combination of Electrochemistry and Fracture Mechanics

Seon Hong Kim
, Yoon Sik So
, Jung Gu Kim

Department of Advanced Materials Science and Engineering

Sungkyunkwan University

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

4 Scopus citations

Abstract

Abstract: To identify the effects of the stress concentration at the pit on the fracture of the district heating (DH) pipeline, the stress increase with the wall thickness reduction was formulated. The formula includes the stress intensity factor with the pitting corrosion. As a result of the application of the DH pipeline conditions to the ASME B31.3 code formula and corrosion test, the interplay with only uniform corrosion and stress due to the internal pressure can not be an immediate reason for the DH pipeline fracture. The K_I value which is calculated by loss of thickness due to both uniform and localized corrosion exceeded fracture toughness value (42 MPa√m) of the weldment pipeline steel (ASTM A106 Gr. B) under all of the studied conditions. Graphic Abstract: Change of the stress intensity factor caused by internal hoop stress with the corrosion process[Figure not available: see fulltext.]

Original language	English
Pages (from-to)	1671-1678
Number of pages	8
Journal	Metals and Materials International
Volume	26
Issue number	11
DOIs	https://doi.org/10.1007/s12540-019-00481-2
State	Published - 1 Nov 2020

Keywords

Fracture mechanics
Iron alloys
Leak before break
Stress/strain measurements

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1007/s12540-019-00481-2

Cite this

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title = "Fracture Behavior of Locally Corroded Steel Pipeline in District Heating System Using the Combination of Electrochemistry and Fracture Mechanics",

abstract = "Abstract: To identify the effects of the stress concentration at the pit on the fracture of the district heating (DH) pipeline, the stress increase with the wall thickness reduction was formulated. The formula includes the stress intensity factor with the pitting corrosion. As a result of the application of the DH pipeline conditions to the ASME B31.3 code formula and corrosion test, the interplay with only uniform corrosion and stress due to the internal pressure can not be an immediate reason for the DH pipeline fracture. The KI value which is calculated by loss of thickness due to both uniform and localized corrosion exceeded fracture toughness value (42 MPa√m) of the weldment pipeline steel (ASTM A106 Gr. B) under all of the studied conditions. Graphic Abstract: Change of the stress intensity factor caused by internal hoop stress with the corrosion process[Figure not available: see fulltext.]",

keywords = "Fracture mechanics, Iron alloys, Leak before break, Stress/strain measurements",

author = "Kim, \{Seon Hong\} and So, \{Yoon Sik\} and Kim, \{Jung Gu\}",

note = "Publisher Copyright: {\textcopyright} 2019, The Korean Institute of Metals and Materials.",

year = "2020",

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doi = "10.1007/s12540-019-00481-2",

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journal = "Metals and Materials International",

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publisher = "Korean Institute of Metals and Materials",

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T1 - Fracture Behavior of Locally Corroded Steel Pipeline in District Heating System Using the Combination of Electrochemistry and Fracture Mechanics

AU - Kim, Seon Hong

AU - So, Yoon Sik

AU - Kim, Jung Gu

PY - 2020/11/1

Y1 - 2020/11/1

N2 - Abstract: To identify the effects of the stress concentration at the pit on the fracture of the district heating (DH) pipeline, the stress increase with the wall thickness reduction was formulated. The formula includes the stress intensity factor with the pitting corrosion. As a result of the application of the DH pipeline conditions to the ASME B31.3 code formula and corrosion test, the interplay with only uniform corrosion and stress due to the internal pressure can not be an immediate reason for the DH pipeline fracture. The KI value which is calculated by loss of thickness due to both uniform and localized corrosion exceeded fracture toughness value (42 MPa√m) of the weldment pipeline steel (ASTM A106 Gr. B) under all of the studied conditions. Graphic Abstract: Change of the stress intensity factor caused by internal hoop stress with the corrosion process[Figure not available: see fulltext.]

AB - Abstract: To identify the effects of the stress concentration at the pit on the fracture of the district heating (DH) pipeline, the stress increase with the wall thickness reduction was formulated. The formula includes the stress intensity factor with the pitting corrosion. As a result of the application of the DH pipeline conditions to the ASME B31.3 code formula and corrosion test, the interplay with only uniform corrosion and stress due to the internal pressure can not be an immediate reason for the DH pipeline fracture. The KI value which is calculated by loss of thickness due to both uniform and localized corrosion exceeded fracture toughness value (42 MPa√m) of the weldment pipeline steel (ASTM A106 Gr. B) under all of the studied conditions. Graphic Abstract: Change of the stress intensity factor caused by internal hoop stress with the corrosion process[Figure not available: see fulltext.]

KW - Fracture mechanics

KW - Iron alloys

KW - Leak before break

KW - Stress/strain measurements

UR - https://www.scopus.com/pages/publications/85074570107

U2 - 10.1007/s12540-019-00481-2

DO - 10.1007/s12540-019-00481-2

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SN - 1598-9623

VL - 26

SP - 1671

EP - 1678

JO - Metals and Materials International

JF - Metals and Materials International

IS - 11

ER -

Fracture Behavior of Locally Corroded Steel Pipeline in District Heating System Using the Combination of Electrochemistry and Fracture Mechanics

Abstract

Keywords

UN SDGs

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