Specimen Level and Component Level Simulations of Fatigue Crack Growth Behavior under Cyclic Bending
This paper describes a benchmark analysis that was performed to demonstrate numerical simulation capability on fatigue crack growth (FCG) behaviour under cyclic bending. Economic design of a piping system against the leak-before-break (LBB) criteria require an accurate estimate of crack growth behav...
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| Format: | Article |
| Language: | English |
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Gruppo Italiano Frattura
2019-07-01
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| Series: | Fracture and Structural Integrity |
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| Online Access: | https://www.fracturae.com/index.php/fis/article/view/2319/2591 |
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| author | R. Suresh Kumar S. Jalaldeen |
| author_facet | R. Suresh Kumar S. Jalaldeen |
| author_sort | R. Suresh Kumar |
| collection | DOAJ |
| description | This paper describes a benchmark analysis that was performed to demonstrate numerical simulation capability on fatigue crack growth (FCG) behaviour under cyclic bending. Economic design of a piping system against the leak-before-break (LBB) criteria require an accurate estimate of crack growth behaviour. To this end, two representative geometries were selected. The first model was a plate-type geometry with a specimen-type feature, and the other model was a prototype pipe bend geometry with the component feature. The numerically simulated FCG behaviour was found to agree with published data within engineering accuracy for both the specimen-level and the component-level geometries. Details of the FCG simulation, its validation against benchmark data, and plausible reasons the difference observed in the FCG behaviour of the specimen-level and full-scale component-level geometries are presented in this paper. The results of the FCG simulation strengthen the argument for performing component-level FCG simulation for an accurate demonstration of LBB for the power plant piping systems. |
| format | Article |
| id | doaj-art-41e40ea327364ae78f1b2cb22c1118eb |
| institution | Kabale University |
| issn | 1971-8993 |
| language | English |
| publishDate | 2019-07-01 |
| publisher | Gruppo Italiano Frattura |
| record_format | Article |
| series | Fracture and Structural Integrity |
| spelling | doaj-art-41e40ea327364ae78f1b2cb22c1118eb2025-01-03T00:26:52ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89932019-07-01134952653510.3221/IGF-ESIS.49.4910.3221/IGF-ESIS.49.49Specimen Level and Component Level Simulations of Fatigue Crack Growth Behavior under Cyclic BendingR. Suresh KumarS. JalaldeenThis paper describes a benchmark analysis that was performed to demonstrate numerical simulation capability on fatigue crack growth (FCG) behaviour under cyclic bending. Economic design of a piping system against the leak-before-break (LBB) criteria require an accurate estimate of crack growth behaviour. To this end, two representative geometries were selected. The first model was a plate-type geometry with a specimen-type feature, and the other model was a prototype pipe bend geometry with the component feature. The numerically simulated FCG behaviour was found to agree with published data within engineering accuracy for both the specimen-level and the component-level geometries. Details of the FCG simulation, its validation against benchmark data, and plausible reasons the difference observed in the FCG behaviour of the specimen-level and full-scale component-level geometries are presented in this paper. The results of the FCG simulation strengthen the argument for performing component-level FCG simulation for an accurate demonstration of LBB for the power plant piping systems.https://www.fracturae.com/index.php/fis/article/view/2319/2591Leak-Before-BreakFatigue Crack GrowthStress Intensification Factor |
| spellingShingle | R. Suresh Kumar S. Jalaldeen Specimen Level and Component Level Simulations of Fatigue Crack Growth Behavior under Cyclic Bending Fracture and Structural Integrity Leak-Before-Break Fatigue Crack Growth Stress Intensification Factor |
| title | Specimen Level and Component Level Simulations of Fatigue Crack Growth Behavior under Cyclic Bending |
| title_full | Specimen Level and Component Level Simulations of Fatigue Crack Growth Behavior under Cyclic Bending |
| title_fullStr | Specimen Level and Component Level Simulations of Fatigue Crack Growth Behavior under Cyclic Bending |
| title_full_unstemmed | Specimen Level and Component Level Simulations of Fatigue Crack Growth Behavior under Cyclic Bending |
| title_short | Specimen Level and Component Level Simulations of Fatigue Crack Growth Behavior under Cyclic Bending |
| title_sort | specimen level and component level simulations of fatigue crack growth behavior under cyclic bending |
| topic | Leak-Before-Break Fatigue Crack Growth Stress Intensification Factor |
| url | https://www.fracturae.com/index.php/fis/article/view/2319/2591 |
| work_keys_str_mv | AT rsureshkumar specimenlevelandcomponentlevelsimulationsoffatiguecrackgrowthbehaviorundercyclicbending AT sjalaldeen specimenlevelandcomponentlevelsimulationsoffatiguecrackgrowthbehaviorundercyclicbending |