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Staging of a localized deformation during tension of specimens of a carbon-carbon composite material with holes of different diameters according to acoustic-emission, surface-deformation mapping, and strain-gauging data

Authors :
M. V. Burkov
P. S. Lyubutin
S. V. Panin
S. A. Khizhnyak
A. V. Byakov
Source :
Russian Journal of Nondestructive Testing. 48:598-608
Publication Year :
2012
Publisher :
Pleiades Publishing Ltd, 2012.

Abstract

The deformation and fracture of specimens of a carbon-carbon composite material with different dimensions of a stress concentrator in the form of a central hole with diameters of 7, 10, and 13 mm were studied using a developed combined method. The results of a numerical analysis of experimental data are presented in the form of diagrams (dependences) of the shear-deformation intensity and the acoustic-emission activity as functions of the loading time. The factors that cause similarity and differences of the investigation results are discussed and interpreted. It is proposed that the obtained data be used for the nondestructive testing of composite materials via the selection of characteristic stages of the deformation development and the moment that precedes fracturing.

Details

ISSN :
16083385 and 10618309
Volume :
48
Database :
OpenAIRE
Journal :
Russian Journal of Nondestructive Testing
Accession number :
edsair.doi...........c89d40aa19a150de49f763b39add3115
Full Text :
https://doi.org/10.1134/s1061830912100087