|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Identification of the Stress Intensity Factor of Carbon Cathode by Digital Image Correlation
||Donald Picard, Luca Sorelli, Julien Réthoré, Houshang Alamdari, Marc-Antoine Baril, Mario Fafard
|On-Site Speaker (Planned)
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 end of the tips. The later, in the case of interfacial fracture in two-dimensional geometries, can be related to normal (mode I) and shear (mode II) stresses. In the present study, only the mode I (opening) has been solicited and has proved challenging for heterogeneous materials such as carbon/carbon composites. The technique used to measure those features is based on full-field measurement using digital image correlation. A new test methodology has been applied which optically measures the crack tip displacement fields by Digital Image Correlation. The stress intensity factors derived from the experimental data are consistent with results available in the literature.
||Planned: Light Metals