The Effect of Welding Residual Stress for Making Artificial Stress Corrosion Crack in the STS 304 Pipe
The stress corrosion crack is one of the fracture phenomena for the major structure components in nuclear power plant. During the operation of a power plant, stress corrosion cracks are initiated and grown especially in dissimilar weldment of primary loop components. In particular, stress corrosion...
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| Format: | Article |
| Language: | English |
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Wiley
2015-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2015/932512 |
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| author | Jae-Seong Kim Bo-Young Lee Woong-Gi Hwang Sung-Sik Kang |
| author_facet | Jae-Seong Kim Bo-Young Lee Woong-Gi Hwang Sung-Sik Kang |
| author_sort | Jae-Seong Kim |
| collection | DOAJ |
| description | The stress corrosion crack is one of the fracture phenomena for the major structure components in nuclear power plant. During the operation of a power plant, stress corrosion cracks are initiated and grown especially in dissimilar weldment of primary loop components. In particular, stress corrosion crack usually occurs when the following three factors exist at the same time: susceptible material, corrosive environment, and tensile stress (residual stress included). Thus, residual stress becomes a critical factor for stress corrosion crack when it is difficult to improve the material corrosivity of the components and their environment under operating conditions. In this study, stress corrosion cracks were artificially produced on STS 304 pipe itself by control of welding residual stress. We used the instrumented indentation technique and 3D FEM analysis (using ANSYS 12) to evaluate the residual stress values in the GTAW area. We used the custom-made device for fabricating the stress corrosion crack in the inner STS 304 pipe wall. As the result of both FEM analysis and experiment, the stress corrosion crack was quickly generated and could be reproduced, and it could be controlled by welding residual stress. |
| format | Article |
| id | doaj-art-abce4d14bfde47cf8054ad7657e0f001 |
| institution | Kabale University |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2015-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-abce4d14bfde47cf8054ad7657e0f0012025-02-03T05:45:55ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422015-01-01201510.1155/2015/932512932512The Effect of Welding Residual Stress for Making Artificial Stress Corrosion Crack in the STS 304 PipeJae-Seong Kim0Bo-Young Lee1Woong-Gi Hwang2Sung-Sik Kang3Institute for Advanced Engineering, Yongin 449-863, Republic of KoreaSchool of Aerospace and Mechanical Engineering, Korea Aerospace University, Goyang 412-791, Republic of KoreaSchool of Aerospace and Mechanical Engineering, Korea Aerospace University, Goyang 412-791, Republic of KoreaKorea Institute of Nuclear Safety, Daejeon 305-338, Republic of KoreaThe stress corrosion crack is one of the fracture phenomena for the major structure components in nuclear power plant. During the operation of a power plant, stress corrosion cracks are initiated and grown especially in dissimilar weldment of primary loop components. In particular, stress corrosion crack usually occurs when the following three factors exist at the same time: susceptible material, corrosive environment, and tensile stress (residual stress included). Thus, residual stress becomes a critical factor for stress corrosion crack when it is difficult to improve the material corrosivity of the components and their environment under operating conditions. In this study, stress corrosion cracks were artificially produced on STS 304 pipe itself by control of welding residual stress. We used the instrumented indentation technique and 3D FEM analysis (using ANSYS 12) to evaluate the residual stress values in the GTAW area. We used the custom-made device for fabricating the stress corrosion crack in the inner STS 304 pipe wall. As the result of both FEM analysis and experiment, the stress corrosion crack was quickly generated and could be reproduced, and it could be controlled by welding residual stress.http://dx.doi.org/10.1155/2015/932512 |
| spellingShingle | Jae-Seong Kim Bo-Young Lee Woong-Gi Hwang Sung-Sik Kang The Effect of Welding Residual Stress for Making Artificial Stress Corrosion Crack in the STS 304 Pipe Advances in Materials Science and Engineering |
| title | The Effect of Welding Residual Stress for Making Artificial Stress Corrosion Crack in the STS 304 Pipe |
| title_full | The Effect of Welding Residual Stress for Making Artificial Stress Corrosion Crack in the STS 304 Pipe |
| title_fullStr | The Effect of Welding Residual Stress for Making Artificial Stress Corrosion Crack in the STS 304 Pipe |
| title_full_unstemmed | The Effect of Welding Residual Stress for Making Artificial Stress Corrosion Crack in the STS 304 Pipe |
| title_short | The Effect of Welding Residual Stress for Making Artificial Stress Corrosion Crack in the STS 304 Pipe |
| title_sort | effect of welding residual stress for making artificial stress corrosion crack in the sts 304 pipe |
| url | http://dx.doi.org/10.1155/2015/932512 |
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