NDLI: Study of damage initiation in SiO2 glass and ceramics by fractoluminescence and acoustic emission techniques

Content Provider	Springer Nature Link
Author	Shcherbakov, I. P. Chmel’, A. E.
Copyright Year	2013
Abstract	The results of high-rate detection of fractoluminescence (FL) and acoustic emission (AE) induced by the shock destruction of the surface of silica glass and silica ceramics are presented. The FL arises as a result of breaking covalent bonds, and the growing microscopic and larger cracks are a source of AE. The intensities of FL and AE are proportional to the energy released by the follow of defects. It is shown that the energy distribution of the energy in the FL signals registered after the shock follows the power law characteristic for cooperative processes in nonequilibrium thermodynamic systems. Qualitatively similar results were obtained for a ceramics not subjected to high-temperature treatment, sintered ceramics, and monolithic glass. This means that the damage initiation at the nanostructural level is always a correlated process. In the series of AE signals, the power law distribution of the energy was found only for sintered ceramics. Cooperative phenomena in AE generation are not observed for unsintered ceramics and silica glass.
Starting Page	527
Ending Page	532
Page Count	6
File Format	PDF
ISSN	10876596
Journal	Glass Physics and Chemistry
Volume Number	39
Issue Number	5
e-ISSN	1608313X
Language	English
Publisher	Springer US
Publisher Date	2013-10-12
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	silica glass silica ceramics shock destruction fractoluminescence acoustic emission Ceramics, Glass, Composites, Natural Methods Characterization and Evaluation of Materials Materials Science Physical Chemistry
Content Type	Text
Resource Type	Article
Subject	Ceramics and Composites Materials Chemistry Condensed Matter Physics

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