Experimental measurement and model validation of COD in pipe under bending with off-centered circumferential crack
The leak area of circumferential through-thickness crack in pipe under bending depends on the position of the crack with respect to the bending plane. In leak-before-break (LBB) analysis, the assumption that the crack is symmetrically placed with respect to the bending plane is not necessarily conse...
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Gruppo Italiano Frattura
2014-05-01
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| Series: | Fracture and Structural Integrity |
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| Online Access: | http://www.gruppofrattura.it/pdf/rivista/numero28/numero_28_art_5.pdf |
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| _version_ | 1841562958795112448 |
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| author | D. Gentile G. Iannitti N. Bonora |
| author_facet | D. Gentile G. Iannitti N. Bonora |
| author_sort | D. Gentile |
| collection | DOAJ |
| description | The leak area of circumferential through-thickness crack in pipe under bending depends on the position of the crack with respect to the bending plane. In leak-before-break (LBB) analysis, the assumption that the crack is symmetrically placed with respect to the bending plane is not necessarily conservative. In this work, the crack opening of circumferential cracks, off-centered with respect to the bending plane, was investigated experimentally. Here, three pipe geometries and two crack lengths were investigated. For each crack, the centred and two off-centered configuration were examined. The crack opening displacement (COD) distribution along the crack length was measured for two selected bending load levels using digital image correlation (DIC) technique. These measurements have been used for verifying the solution provided by the hodograph cone method (HCM) as proposed by Bonora [1]. |
| format | Article |
| id | doaj-art-e5d7c93e003e416fbcf767eba3193cad |
| institution | Kabale University |
| issn | 1971-8993 1971-8993 |
| language | English |
| publishDate | 2014-05-01 |
| publisher | Gruppo Italiano Frattura |
| record_format | Article |
| series | Fracture and Structural Integrity |
| spelling | doaj-art-e5d7c93e003e416fbcf767eba3193cad2025-01-03T00:39:14ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89931971-89932014-05-01828425010.3221/IGF-ESIS.28.05Experimental measurement and model validation of COD in pipe under bending with off-centered circumferential crackD. Gentile0G. Iannitti1N. Bonora2Department of Civil and Mechanical Engineering, University of Cassino and Southern Lazio (Italy)Department of Civil and Mechanical Engineering, University of Cassino and Southern Lazio (Italy)Department of Civil and Mechanical Engineering, University of Cassino and Southern Lazio (Italy)The leak area of circumferential through-thickness crack in pipe under bending depends on the position of the crack with respect to the bending plane. In leak-before-break (LBB) analysis, the assumption that the crack is symmetrically placed with respect to the bending plane is not necessarily conservative. In this work, the crack opening of circumferential cracks, off-centered with respect to the bending plane, was investigated experimentally. Here, three pipe geometries and two crack lengths were investigated. For each crack, the centred and two off-centered configuration were examined. The crack opening displacement (COD) distribution along the crack length was measured for two selected bending load levels using digital image correlation (DIC) technique. These measurements have been used for verifying the solution provided by the hodograph cone method (HCM) as proposed by Bonora [1].http://www.gruppofrattura.it/pdf/rivista/numero28/numero_28_art_5.pdfCrackPipeBendingCODOff-axis |
| spellingShingle | D. Gentile G. Iannitti N. Bonora Experimental measurement and model validation of COD in pipe under bending with off-centered circumferential crack Fracture and Structural Integrity Crack Pipe Bending COD Off-axis |
| title | Experimental measurement and model validation of COD in pipe under bending with off-centered circumferential crack |
| title_full | Experimental measurement and model validation of COD in pipe under bending with off-centered circumferential crack |
| title_fullStr | Experimental measurement and model validation of COD in pipe under bending with off-centered circumferential crack |
| title_full_unstemmed | Experimental measurement and model validation of COD in pipe under bending with off-centered circumferential crack |
| title_short | Experimental measurement and model validation of COD in pipe under bending with off-centered circumferential crack |
| title_sort | experimental measurement and model validation of cod in pipe under bending with off centered circumferential crack |
| topic | Crack Pipe Bending COD Off-axis |
| url | http://www.gruppofrattura.it/pdf/rivista/numero28/numero_28_art_5.pdf |
| work_keys_str_mv | AT dgentile experimentalmeasurementandmodelvalidationofcodinpipeunderbendingwithoffcenteredcircumferentialcrack AT giannitti experimentalmeasurementandmodelvalidationofcodinpipeunderbendingwithoffcenteredcircumferentialcrack AT nbonora experimentalmeasurementandmodelvalidationofcodinpipeunderbendingwithoffcenteredcircumferentialcrack |