Scaling of compression strength in disordered solids: metallic foams
The scaling of compression strength with porosity for aluminium foams was investigated. The Al 99.96, AlMg1Si0.6 and AlSi11Mg0.6 foams of various porosity, sample size with and without surface skin were tested in compression. It was observed that the compression strength of aluminium foams scales ne...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Gruppo Italiano Frattura
2016-03-01
|
| Series: | Fracture and Structural Integrity |
| Subjects: | |
| Online Access: | https://www.fracturae.com/index.php/fis/article/view/1694 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1841562860131450880 |
|---|---|
| author | J. Ková?ik J. Jerz N. Mináriková L. Marsavina E. Linul |
| author_facet | J. Ková?ik J. Jerz N. Mináriková L. Marsavina E. Linul |
| author_sort | J. Ková?ik |
| collection | DOAJ |
| description | The scaling of compression strength with porosity for aluminium foams was investigated. The Al 99.96, AlMg1Si0.6 and AlSi11Mg0.6 foams of various porosity, sample size with and without surface skin were tested in compression. It was observed that the compression strength of aluminium foams scales near the percolation threshold with Tf ? 1.9 - 2.0 almost independently on the matrix alloy, sample size and presence of surface skin. The difference of the obtained values of Tf to the theoretical estimate of Tf = 2.64 ± 0.3 by Arbabi and Sahimi and to Ashby estimate of 1.5 was explained using an analogy with the Daoud and Coniglio approach to the scaling of the free energy of sol-gel transition. It leads to the finding that, there are two different universality classes for the critical exponent Tf: when the stretching forces dominate Tf = f = 2.1, respectively when bending forces prevail Tf = ?.d = 2.64 seems to be valid. Another possibility is the validity of relation Tf ? f which varies only according to the universality class of modulus of elasticity in foam. |
| format | Article |
| id | doaj-art-950d4a03cdb64946928f8c5d1ca08d09 |
| institution | Kabale University |
| issn | 1971-8993 |
| language | English |
| publishDate | 2016-03-01 |
| publisher | Gruppo Italiano Frattura |
| record_format | Article |
| series | Fracture and Structural Integrity |
| spelling | doaj-art-950d4a03cdb64946928f8c5d1ca08d092025-01-03T00:39:59ZengGruppo Italiano FratturaFracture and Structural Integrity1971-89932016-03-011036Scaling of compression strength in disordered solids: metallic foamsJ. Ková?ikJ. JerzN. MinárikováL. MarsavinaE. LinulThe scaling of compression strength with porosity for aluminium foams was investigated. The Al 99.96, AlMg1Si0.6 and AlSi11Mg0.6 foams of various porosity, sample size with and without surface skin were tested in compression. It was observed that the compression strength of aluminium foams scales near the percolation threshold with Tf ? 1.9 - 2.0 almost independently on the matrix alloy, sample size and presence of surface skin. The difference of the obtained values of Tf to the theoretical estimate of Tf = 2.64 ± 0.3 by Arbabi and Sahimi and to Ashby estimate of 1.5 was explained using an analogy with the Daoud and Coniglio approach to the scaling of the free energy of sol-gel transition. It leads to the finding that, there are two different universality classes for the critical exponent Tf: when the stretching forces dominate Tf = f = 2.1, respectively when bending forces prevail Tf = ?.d = 2.64 seems to be valid. Another possibility is the validity of relation Tf ? f which varies only according to the universality class of modulus of elasticity in foam.https://www.fracturae.com/index.php/fis/article/view/1694Metallic foamsAluminium foamsCompressionCompression strengthPercolation |
| spellingShingle | J. Ková?ik J. Jerz N. Mináriková L. Marsavina E. Linul Scaling of compression strength in disordered solids: metallic foams Fracture and Structural Integrity Metallic foams Aluminium foams Compression Compression strength Percolation |
| title | Scaling of compression strength in disordered solids: metallic foams |
| title_full | Scaling of compression strength in disordered solids: metallic foams |
| title_fullStr | Scaling of compression strength in disordered solids: metallic foams |
| title_full_unstemmed | Scaling of compression strength in disordered solids: metallic foams |
| title_short | Scaling of compression strength in disordered solids: metallic foams |
| title_sort | scaling of compression strength in disordered solids metallic foams |
| topic | Metallic foams Aluminium foams Compression Compression strength Percolation |
| url | https://www.fracturae.com/index.php/fis/article/view/1694 |
| work_keys_str_mv | AT jkovaik scalingofcompressionstrengthindisorderedsolidsmetallicfoams AT jjerz scalingofcompressionstrengthindisorderedsolidsmetallicfoams AT nminarikova scalingofcompressionstrengthindisorderedsolidsmetallicfoams AT lmarsavina scalingofcompressionstrengthindisorderedsolidsmetallicfoams AT elinul scalingofcompressionstrengthindisorderedsolidsmetallicfoams |