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Identification of the Stress Intensity Factor of Carbon Cathode by Digital Image Correlation

Authors :
M. A. Baril
Julien Réthoré
Mario Fafard
Luca Sorelli
Donald Picard
Houshang Alamdari
Source :
Light Metals 2017 ISBN: 9783319515403
Publication Year :
2017
Publisher :
Springer International Publishing, 2017.

Abstract

Crack propagation in carbon cathode used in the aluminium industry has been investigated through flexural tests on notched specimens. The main parameters of interest were the geometrical evolution of the crack and the stress intensity factor at the tip ends. The latter, in the case of interfacial fracture in two-dimensional geometries, can be related to normal (mode I) and shear (mode II) stresses. In this work, a new methodology has been applied which optically measures the crack tip displacement field by Digital Image Correlation. The stress intensity factors derived from the experimental data are consistent with results available in the literature. Furthermore, the preliminary results showed that characterizing the mode I (opening) only is somehow challenging due to the heterogeneity of such carbonaceous materials.

Details

ISBN :
978-3-319-51540-3
ISBNs :
9783319515403
Database :
OpenAIRE
Journal :
Light Metals 2017 ISBN: 9783319515403
Accession number :
edsair.doi...........bd2e9d06bb0323d29ae8a123e112f07e
Full Text :
https://doi.org/10.1007/978-3-319-51541-0_152