Assessment of Failure Strength of Real Alumina Foams with Use of the Periodic Structure Model
The subject of the study are alumina foams produced by gelcasting method. The results of micro-computed tomography of the foam samples are used to create the numerical model reconstructing the real structure of the foam skeleton as well as the simplified periodic open-cell structure models. The aim...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Polish Academy of Sciences
2018-12-01
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| Series: | Archives of Metallurgy and Materials |
| Subjects: | |
| Online Access: | https://journals.pan.pl/Content/109163/PDF/AMM-2018-4-44-Nowak.pdf |
| _version_ | 1811313296523919360 |
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| author | M. Nowak Z. Nowak R.B. Pęcherski M. Potoczek R.E. Śliwa |
| author_facet | M. Nowak Z. Nowak R.B. Pęcherski M. Potoczek R.E. Śliwa |
| author_sort | M. Nowak |
| collection | DOAJ |
| description | The subject of the study are alumina foams produced by gelcasting method. The results of micro-computed tomography of the foam samples are used to create the numerical model reconstructing the real structure of the foam skeleton as well as the simplified periodic open-cell structure models. The aim of the paper is to present a new idea of the energy-based assessment of failure strength under uniaxial compression of real alumina foams of various porosity with use of the periodic structure model of the same porosity. Considering two kinds of cellular structures: the periodic one, for instance of fcc type, and the random structure of real alumina foam it is possible to justify the hypothesis, computationally and experimentally, that the same elastic energy density cumulated in the both structures of the same porosity allows to determine the close values of fracture strength under compression. Application of finite element computations for the analysis of deformation and failure processes in real ceramic foams is time consuming. Therefore, the use of simplified periodic cell structure models for the assessment of elastic moduli and failure strength appears very attractive from the point of view of practical applications. |
| first_indexed | 2024-04-13T10:52:15Z |
| format | Article |
| id | doaj.art-54e785990e1d4740a1e767297e48f3aa |
| institution | Directory Open Access Journal |
| issn | 2300-1909 |
| language | English |
| last_indexed | 2024-04-13T10:52:15Z |
| publishDate | 2018-12-01 |
| publisher | Polish Academy of Sciences |
| record_format | Article |
| series | Archives of Metallurgy and Materials |
| spelling | doaj.art-54e785990e1d4740a1e767297e48f3aa2022-12-22T02:49:38ZengPolish Academy of SciencesArchives of Metallurgy and Materials2300-19092018-12-01vol. 63No 419031908https://doi.org/10.24425/amm.2018.125122Assessment of Failure Strength of Real Alumina Foams with Use of the Periodic Structure ModelM. NowakZ. NowakR.B. PęcherskiM. PotoczekR.E. ŚliwaThe subject of the study are alumina foams produced by gelcasting method. The results of micro-computed tomography of the foam samples are used to create the numerical model reconstructing the real structure of the foam skeleton as well as the simplified periodic open-cell structure models. The aim of the paper is to present a new idea of the energy-based assessment of failure strength under uniaxial compression of real alumina foams of various porosity with use of the periodic structure model of the same porosity. Considering two kinds of cellular structures: the periodic one, for instance of fcc type, and the random structure of real alumina foam it is possible to justify the hypothesis, computationally and experimentally, that the same elastic energy density cumulated in the both structures of the same porosity allows to determine the close values of fracture strength under compression. Application of finite element computations for the analysis of deformation and failure processes in real ceramic foams is time consuming. Therefore, the use of simplified periodic cell structure models for the assessment of elastic moduli and failure strength appears very attractive from the point of view of practical applications.https://journals.pan.pl/Content/109163/PDF/AMM-2018-4-44-Nowak.pdfperiodic cell structurealumina open-cell foamyoung modulusstrength of alumina foamsburzyński limit criterion |
| spellingShingle | M. Nowak Z. Nowak R.B. Pęcherski M. Potoczek R.E. Śliwa Assessment of Failure Strength of Real Alumina Foams with Use of the Periodic Structure Model Archives of Metallurgy and Materials periodic cell structure alumina open-cell foam young modulus strength of alumina foams burzyński limit criterion |
| title | Assessment of Failure Strength of Real Alumina Foams with Use of the Periodic Structure Model |
| title_full | Assessment of Failure Strength of Real Alumina Foams with Use of the Periodic Structure Model |
| title_fullStr | Assessment of Failure Strength of Real Alumina Foams with Use of the Periodic Structure Model |
| title_full_unstemmed | Assessment of Failure Strength of Real Alumina Foams with Use of the Periodic Structure Model |
| title_short | Assessment of Failure Strength of Real Alumina Foams with Use of the Periodic Structure Model |
| title_sort | assessment of failure strength of real alumina foams with use of the periodic structure model |
| topic | periodic cell structure alumina open-cell foam young modulus strength of alumina foams burzyński limit criterion |
| url | https://journals.pan.pl/Content/109163/PDF/AMM-2018-4-44-Nowak.pdf |
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