Salje, Ekhard K. H. and Soto-Parra, Daniel Enrique and Planes, Antoni and Vives, Eduard and Reinecker, Marius and Schranz, Wilfried (2011) Failure mechanism in porous materials under compression: crackling noise in mesoporous SiO2. Philosophical Magazine Letters, 91 (8). pp. 554-560.
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Abstract
The failure mechanism of porous materials under uniaxial stress has been investigated experimentally. Microporous SiO2, Vycor, has been subjected to slowly increasing compressive uniaxial stress with stress rates between 0.2 and 12.2?kPa/s. With increasing stress the strain changes stepwise with acoustic emission correlated with each volume collapse. The acoustic emission followed the characteristics of ?crackling noise? with a power law distribution over an exceptionally large interval of 6 decades at the slowest stress rate. The power law exponent is ?1.39. Possible applications in mining industry and others are discussed. The failure mechanism of porous materials under uniaxial stress has been investigated experimentally. Microporous SiO2, Vycor, has been subjected to slowly increasing compressive uniaxial stress with stress rates between 0.2 and 12.2?kPa/s. With increasing stress the strain changes stepwise with acoustic emission correlated with each volume collapse. The acoustic emission followed the characteristics of ?crackling noise? with a power law distribution over an exceptionally large interval of 6 decades at the slowest stress rate. The power law exponent is ?1.39. Possible applications in mining industry and others are discussed.
Item Type: | Article |
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Uncontrolled Keywords: | 2011AREP; IA63; |
Subjects: | 03 - Mineral Sciences |
Divisions: | 03 - Mineral Sciences |
Journal or Publication Title: | Philosophical Magazine Letters |
Volume: | 91 |
Page Range: | pp. 554-560 |
Depositing User: | Sarah Humbert |
Date Deposited: | 08 Feb 2012 10:04 |
Last Modified: | 23 Jul 2013 10:03 |
URI: | http://eprints.esc.cam.ac.uk/id/eprint/2374 |
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