Evaluation of the SIF and T-stress values of the Brazilian disc with a central notch by hybrid method

0524013 - ÚFM 2021 RIV GB eng J - Journal Article
Miarka, Petr - Cruces, A. S. - Seitl, Stanislav - Malíková, Lucie - Lopez-Crespo, P.
Evaluation of the SIF and T-stress values of the Brazilian disc with a central notch by hybrid method.
International Journal of Fatigue. Roč. 135, JUN (2020), č. článku 105562. ISSN 0142-1123. E-ISSN 1879-3452
Institutional support: RVO:68081723
Keywords : mode-i fracture * intensity factors * brittle-fracture * concrete * fatigue * specimen * toughness * strength * behavior * energy * T-stress * dic * Brazilian disc * Concrete * Mixed mode I/II
OECD category: Civil engineering
Impact factor: 5.186, year: 2020
Method of publishing: Limited access
https://doi.org/10.1016/j.ijfatigue.2020.105562

The near-crack-tip displacement field of a Brazilian disc with a central notch (BDCN) under mixed mode I/II conditions was measured via digital image correlation (DIC) and the stress intensity factor (SIF) was estimated using a hybrid method that allowed the fitting of the experimental data into the Williams series expansion. The effects of higher-order terms in the Williams expansion (T-stress) were analysed for different sizes of the crack tip fitting region and the results were compared with analytical predictions as well as with results obtained based on the numerically calculated crack-tip displacement field.
Permanent Link: http://hdl.handle.net/11104/0308322