ISSN 3041-1815. Physicochemical Mechanics of Materials. 2026.
Volume 62, Issue 3
Determination of the steel fracture toughness on short samples with a sharp chevron notch
Hvozdiuk M. M. 
Karpenko Physico-Mechanical Institute of the National Academy of Sciences of Ukraine, Lviv, Ukraine. (https://ror.org/02jv3yx22)
Lviv Polytechnic National University, Lviv, Ukraine. (https://ror.org/0542q3127)
Palyukh V. M.
Lviv Polytechnic National University, Lviv, Ukraine. (https://ror.org/0542q3127)
Gembara T. V.
Lviv State University of Life Safety, Lviv, Ukraine. (https://ror.org/057g9bh47)
Keywords
fracture mechanics, crack growth resistance, fracture toughness, chevron notch, plane deformation.
Cite as
Hvozdiuk M. M., Palyukh V. M., and Hembara T. V. Determination of the steel fracture toughness on short samples with a sharp chevron notch. Physicochemical Mechanics of Materials. 2026. 62(3), 102-106.
Abstract
The critical stress intensity factor KIC under the condition of plane deformation was determined in accordance with the requirements of ISO 12135:2021 Alternative methods for determining fracture toughness were described. The method of calculating the KIC coefficient using short rectangular samples of a square section with a chevron notch was evaluated as the most promising. The experimental testing of the method was described, and the fracture toughness obtained by the standard method on compact samples and that with a chevron notch was compared.