Damage evolution law on the surface field of argillaceous dolomite based on Brazilian test and 3D digital image correlation
This paper aims to disclose the damage evolution law of the surface field of argillaceous dolomite. For this purpose, the 3D digital image correlation was combined with the Brazilian test into a new analysis method for the surface field damage evolution of the rock. First, the stress-strain curve of...
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Gruppo Italiano Frattura
2019-02-01
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| Series: | Fracture and Structural Integrity |
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| Online Access: | https://www.fracturae.com/index.php/fis/article/view/2253 |
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| author | Xiaochuan Wang Delei Yang |
| author_facet | Xiaochuan Wang Delei Yang |
| author_sort | Xiaochuan Wang |
| collection | DOAJ |
| description | This paper aims to disclose the damage evolution law of the surface field of argillaceous dolomite. For this purpose, the 3D digital image correlation was combined with the Brazilian test into a new analysis method for the surface field damage evolution of the rock. First, the stress-strain curve of argillaceous dolomite was obtained in Brazilian test, and the strain contours of the key points were acquired by 3D digital image correlation. Then, the standard deviations of the x and y direction strains at the key points during the test were calculated using statistical methods. In addition, the dual damage factor was introduced to quantify the law of the strain statistics and plotted into a curve. Finally, the strains in x and y directions on the horizontal axis ox in the disc center were obtained through elastic mechanical analysis and compared with those measured by 3D digital image correlation in the elastic phase. In this way, the following conclusions were drawn: the argillaceous dolomite exhibited obvious non-homogeneity in the surface field damage evolution. The different phases of the Brazilian test can be determined accurately according to the turning points of the damage factor curve. The fluctuations of the damage factor curve also reveal the features of surface field damage evolution of argillaceous dolomite in Brazilian test. This research shows that the traditional assumption of homogeneity cannot reflect the heterogeneity of the surface field damage evolution of argillaceous dolomite in Brazilian test and provides a quantitative research method for rock damage evolution in that test. |
| format | Article |
| id | doaj-art-bc2b5b5fe91c42f5bfbdbbf790c11f68 |
| institution | Kabale University |
| issn | 1971-8993 |
| language | English |
| publishDate | 2019-02-01 |
| publisher | Gruppo Italiano Frattura |
| record_format | Article |
| series | Fracture and Structural Integrity |
| spelling | doaj-art-bc2b5b5fe91c42f5bfbdbbf790c11f682025-01-03T00:40:22ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89932019-02-011348Damage evolution law on the surface field of argillaceous dolomite based on Brazilian test and 3D digital image correlationXiaochuan Wang0Delei Yang1School of civil engineering, Guizhou University, Guiyang 550025, ChinaDepartment of Architectural and Civil Engineering, University of Huanghuai, Zhumadian 463000, China; Department of Civil Engineering, University of Ottawa, NO.75 Laurier Avenue, N K1N 6N5, CanadaThis paper aims to disclose the damage evolution law of the surface field of argillaceous dolomite. For this purpose, the 3D digital image correlation was combined with the Brazilian test into a new analysis method for the surface field damage evolution of the rock. First, the stress-strain curve of argillaceous dolomite was obtained in Brazilian test, and the strain contours of the key points were acquired by 3D digital image correlation. Then, the standard deviations of the x and y direction strains at the key points during the test were calculated using statistical methods. In addition, the dual damage factor was introduced to quantify the law of the strain statistics and plotted into a curve. Finally, the strains in x and y directions on the horizontal axis ox in the disc center were obtained through elastic mechanical analysis and compared with those measured by 3D digital image correlation in the elastic phase. In this way, the following conclusions were drawn: the argillaceous dolomite exhibited obvious non-homogeneity in the surface field damage evolution. The different phases of the Brazilian test can be determined accurately according to the turning points of the damage factor curve. The fluctuations of the damage factor curve also reveal the features of surface field damage evolution of argillaceous dolomite in Brazilian test. This research shows that the traditional assumption of homogeneity cannot reflect the heterogeneity of the surface field damage evolution of argillaceous dolomite in Brazilian test and provides a quantitative research method for rock damage evolution in that test.https://www.fracturae.com/index.php/fis/article/view/2253Brazilian test3D digital image correlationSurface fieldDamage evolution |
| spellingShingle | Xiaochuan Wang Delei Yang Damage evolution law on the surface field of argillaceous dolomite based on Brazilian test and 3D digital image correlation Fracture and Structural Integrity Brazilian test 3D digital image correlation Surface field Damage evolution |
| title | Damage evolution law on the surface field of argillaceous dolomite based on Brazilian test and 3D digital image correlation |
| title_full | Damage evolution law on the surface field of argillaceous dolomite based on Brazilian test and 3D digital image correlation |
| title_fullStr | Damage evolution law on the surface field of argillaceous dolomite based on Brazilian test and 3D digital image correlation |
| title_full_unstemmed | Damage evolution law on the surface field of argillaceous dolomite based on Brazilian test and 3D digital image correlation |
| title_short | Damage evolution law on the surface field of argillaceous dolomite based on Brazilian test and 3D digital image correlation |
| title_sort | damage evolution law on the surface field of argillaceous dolomite based on brazilian test and 3d digital image correlation |
| topic | Brazilian test 3D digital image correlation Surface field Damage evolution |
| url | https://www.fracturae.com/index.php/fis/article/view/2253 |
| work_keys_str_mv | AT xiaochuanwang damageevolutionlawonthesurfacefieldofargillaceousdolomitebasedonbraziliantestand3ddigitalimagecorrelation AT deleiyang damageevolutionlawonthesurfacefieldofargillaceousdolomitebasedonbraziliantestand3ddigitalimagecorrelation |