Fatigue crack behaviour: comparing three-point bend test and wedge splitting test data on vibrated concrete using Paris' law
The fatigue behaviour of concrete has become more important for the design of constructions due to the desire to build slimmer structures, which are more sensitive to fatigue loading. This article aims to evaluate and compare the fatigue crack propagation rate in vibrated concrete for four different...
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| Format: | Article |
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Gruppo Italiano Frattura
2017-01-01
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| Series: | Fracture and Structural Integrity |
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| Online Access: | http://www.gruppofrattura.it/pdf/rivista/numero39/numero_39_art_12.pdf |
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| author | S. Seitl T. Thienpont W. De Corte |
| author_facet | S. Seitl T. Thienpont W. De Corte |
| author_sort | S. Seitl |
| collection | DOAJ |
| description | The fatigue behaviour of concrete has become more important for the design of constructions due to the desire to build slimmer structures, which are more sensitive to fatigue loading. This article aims to evaluate and compare the fatigue crack propagation rate in vibrated concrete for four different stress ratios using the Paris-Erdogan law. The data evaluation in this article is based on crack mouth opening displacement (CMOD) measurements from cyclic three-point bending tests on single edge notched beams and from wedge splitting tests on notched cubes, obtained from experiments at Ghent University. For this study, finite element analysis is used to obtain a mathematical relationship between the CMOD and the relative crack length a/W, as well as a relationship between the stress intensity ratio ∆K and a/W. The obtained mathematical relationships were then combined with the measured CMOD values to correlate the test data to the Paris-Erdogan law. Herein, the crack propagation rate da/dN is plotted against the corresponding stress intensity range ∆K in a log-log graph. In a final step, the Paris-Erdogan law parameters C and m were obtained through linear curve fitting on the data points from the obtained graphs. The parameters C and m are then used to compare and evaluate the fatigue crack behavior in vibrated concrete, and the differences between the results from the three-point bend tests and wedge splitting tests. |
| format | Article |
| id | doaj-art-b843c9510d2f49c991de4c843c10bcb0 |
| institution | Kabale University |
| issn | 1971-8993 1971-8993 |
| language | English |
| publishDate | 2017-01-01 |
| publisher | Gruppo Italiano Frattura |
| record_format | Article |
| series | Fracture and Structural Integrity |
| spelling | doaj-art-b843c9510d2f49c991de4c843c10bcb02025-01-03T01:02:44ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89931971-89932017-01-01113911011710.3221/IGF-ESIS.39.12Fatigue crack behaviour: comparing three-point bend test and wedge splitting test data on vibrated concrete using Paris' lawS. Seitl0T. Thienpont1W. De Corte 2nstitute of Physics of Materials, Academy of Sciences of the Czech Republic, Zizkova 22, 616 62 Brno, and Brno University of Technology, Faculty of Civil Engineering, Veveří 331/95, Brno 602 00, Czech Republic Ghent University, Faculty of Engineering and Architecture, Valentin Vaerwyckweg 1, 9000 Ghent, Belgium and Brno University of Technology, Faculty of Civil Engineering, Veveří 331/95, Brno 602 00, Czech RepublicGhent University, Department of Structural Engineering, Faculty of Engineering and Architecture, Valentin Vaerwyckweg 1, 9000 Ghent, BelgiumThe fatigue behaviour of concrete has become more important for the design of constructions due to the desire to build slimmer structures, which are more sensitive to fatigue loading. This article aims to evaluate and compare the fatigue crack propagation rate in vibrated concrete for four different stress ratios using the Paris-Erdogan law. The data evaluation in this article is based on crack mouth opening displacement (CMOD) measurements from cyclic three-point bending tests on single edge notched beams and from wedge splitting tests on notched cubes, obtained from experiments at Ghent University. For this study, finite element analysis is used to obtain a mathematical relationship between the CMOD and the relative crack length a/W, as well as a relationship between the stress intensity ratio ∆K and a/W. The obtained mathematical relationships were then combined with the measured CMOD values to correlate the test data to the Paris-Erdogan law. Herein, the crack propagation rate da/dN is plotted against the corresponding stress intensity range ∆K in a log-log graph. In a final step, the Paris-Erdogan law parameters C and m were obtained through linear curve fitting on the data points from the obtained graphs. The parameters C and m are then used to compare and evaluate the fatigue crack behavior in vibrated concrete, and the differences between the results from the three-point bend tests and wedge splitting tests.http://www.gruppofrattura.it/pdf/rivista/numero39/numero_39_art_12.pdfFatigue crack behaviourThree-point bending testWedge splitting testSelf-compacting concrete |
| spellingShingle | S. Seitl T. Thienpont W. De Corte Fatigue crack behaviour: comparing three-point bend test and wedge splitting test data on vibrated concrete using Paris' law Fracture and Structural Integrity Fatigue crack behaviour Three-point bending test Wedge splitting test Self-compacting concrete |
| title | Fatigue crack behaviour: comparing three-point bend test and wedge splitting test data on vibrated concrete using Paris' law |
| title_full | Fatigue crack behaviour: comparing three-point bend test and wedge splitting test data on vibrated concrete using Paris' law |
| title_fullStr | Fatigue crack behaviour: comparing three-point bend test and wedge splitting test data on vibrated concrete using Paris' law |
| title_full_unstemmed | Fatigue crack behaviour: comparing three-point bend test and wedge splitting test data on vibrated concrete using Paris' law |
| title_short | Fatigue crack behaviour: comparing three-point bend test and wedge splitting test data on vibrated concrete using Paris' law |
| title_sort | fatigue crack behaviour comparing three point bend test and wedge splitting test data on vibrated concrete using paris law |
| topic | Fatigue crack behaviour Three-point bending test Wedge splitting test Self-compacting concrete |
| url | http://www.gruppofrattura.it/pdf/rivista/numero39/numero_39_art_12.pdf |
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