Investigation of Failure Mechanism of Al2O3 Specimens Subjected to Three-Point Bending Test
Experimental loading and FEM simulation-based approach at macroscale are utilized to investigate the failure mechanisms of Al2O3 ceramics. Experimental characterization of the microstructure is carried out using SEM. Recently the mesoscale models of a representative volume of porous alumina ceramics...
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| Format: | Article |
| Language: | English |
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Gruppo Italiano Frattura
2019-10-01
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| Series: | Fracture and Structural Integrity |
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| Online Access: | https://www.fracturae.com/index.php/fis/article/view/2496/2681 |
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| author | Mikhail Eremin Alexey Kulkov Igor Smolin Valentina Mikushina |
| author_facet | Mikhail Eremin Alexey Kulkov Igor Smolin Valentina Mikushina |
| author_sort | Mikhail Eremin |
| collection | DOAJ |
| description | Experimental loading and FEM simulation-based approach at macroscale are utilized to investigate the failure mechanisms of Al2O3 ceramics. Experimental characterization of the microstructure is carried out using SEM. Recently the mesoscale models of a representative volume of porous alumina ceramics were built on the basis of grain and pore distribution patterns and subjected to uniaxial loading in order to determine effective mechanical characteristics which are utilized for macroscopic simulation in this work. Pre-fracture behavior of specimens undergoes the Drucker-Prager model with non-associated plastic flow rule. Experimental and numerical simulation fracture patterns show that material exhibits predominantly mode I, sometimes passing to mixed mode I+II of crack propagation. Comparison of experimental data and numerical simulation data gives a good agreement. |
| format | Article |
| id | doaj-art-0ff91db3b1944e60a3d4228395f289f9 |
| institution | Kabale University |
| issn | 1971-8993 |
| language | English |
| publishDate | 2019-10-01 |
| publisher | Gruppo Italiano Frattura |
| record_format | Article |
| series | Fracture and Structural Integrity |
| spelling | doaj-art-0ff91db3b1944e60a3d4228395f289f92025-01-03T01:02:46ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89932019-10-011350384510.3221/IGF-ESIS.50.0510.3221/IGF-ESIS.50.05Investigation of Failure Mechanism of Al2O3 Specimens Subjected to Three-Point Bending TestMikhail EreminAlexey KulkovIgor SmolinValentina MikushinaExperimental loading and FEM simulation-based approach at macroscale are utilized to investigate the failure mechanisms of Al2O3 ceramics. Experimental characterization of the microstructure is carried out using SEM. Recently the mesoscale models of a representative volume of porous alumina ceramics were built on the basis of grain and pore distribution patterns and subjected to uniaxial loading in order to determine effective mechanical characteristics which are utilized for macroscopic simulation in this work. Pre-fracture behavior of specimens undergoes the Drucker-Prager model with non-associated plastic flow rule. Experimental and numerical simulation fracture patterns show that material exhibits predominantly mode I, sometimes passing to mixed mode I+II of crack propagation. Comparison of experimental data and numerical simulation data gives a good agreement.https://www.fracturae.com/index.php/fis/article/view/2496/2681alumina ceramicsthree-point bendingcrack propagationfracture criterionexperimentnumerical simulation |
| spellingShingle | Mikhail Eremin Alexey Kulkov Igor Smolin Valentina Mikushina Investigation of Failure Mechanism of Al2O3 Specimens Subjected to Three-Point Bending Test Fracture and Structural Integrity alumina ceramics three-point bending crack propagation fracture criterion experiment numerical simulation |
| title | Investigation of Failure Mechanism of Al2O3 Specimens Subjected to Three-Point Bending Test |
| title_full | Investigation of Failure Mechanism of Al2O3 Specimens Subjected to Three-Point Bending Test |
| title_fullStr | Investigation of Failure Mechanism of Al2O3 Specimens Subjected to Three-Point Bending Test |
| title_full_unstemmed | Investigation of Failure Mechanism of Al2O3 Specimens Subjected to Three-Point Bending Test |
| title_short | Investigation of Failure Mechanism of Al2O3 Specimens Subjected to Three-Point Bending Test |
| title_sort | investigation of failure mechanism of al2o3 specimens subjected to three point bending test |
| topic | alumina ceramics three-point bending crack propagation fracture criterion experiment numerical simulation |
| url | https://www.fracturae.com/index.php/fis/article/view/2496/2681 |
| work_keys_str_mv | AT mikhaileremin investigationoffailuremechanismofal2o3specimenssubjectedtothreepointbendingtest AT alexeykulkov investigationoffailuremechanismofal2o3specimenssubjectedtothreepointbendingtest AT igorsmolin investigationoffailuremechanismofal2o3specimenssubjectedtothreepointbendingtest AT valentinamikushina investigationoffailuremechanismofal2o3specimenssubjectedtothreepointbendingtest |