UPGRADED TWO-STEP-SCALING APPROACH TO THE DTB CHARACTERIZATION OF FERRITIC STEELS
Апстракт
The fracture toughness of ferritic steels in the DTB (ductile-to-brittle) transition temperature
region is a stochastic extrinsic property known for pronounced experimental data scatter that
necessitates statistical approach in the DTB characterization. The novel two-step-scaling (2SS)
method, proposed recently for the size effect-modeling across the DTB transition region, is
developed based on the weakest-link statistics and the two-parametric Weibull distribution.
Specifically, the size sensitivity of the Weibull parameters of scale and shape are built into the
appropriate framework. This approach is upgraded in this article to render the comparison with
the existing models more transparent. Specifically, the original 2SS method is enhanced by
adding a lower limit on fracture toughness, resulting in the translated (three-parameter) Weibull
cumulative distribution function. This third Weibull parameter, often dubbed the location
parameter, defines a threshold value that limi...ts the accessible fracture toughness domain. The
upgraded 2SS approach is compared to two established methods of the DTB fracture toughness
assessment, which favorably reflected upon its generality and application flexibility.
Кључне речи:
scaling / fracture toughness / size effect / Weibull distribution / location parameterИзвор:
9th International Congress of the Serbian Society of Mechanics (ICSSM), July 5-7, 2023, Vrnjačka Banja, Serbia, 2023URI
http://www.ssm.kg.ac.rs/congress_2023/papers/https://machinery.mas.bg.ac.rs/handle/123456789/7099
Колекције
Институција/група
Inovacioni centarTY - CONF AU - Mastilović, Sreten AU - Đorđević, Branislav AU - Sedmak, Aleksandar PY - 2023 UR - http://www.ssm.kg.ac.rs/congress_2023/papers/ UR - https://machinery.mas.bg.ac.rs/handle/123456789/7099 AB - The fracture toughness of ferritic steels in the DTB (ductile-to-brittle) transition temperature region is a stochastic extrinsic property known for pronounced experimental data scatter that necessitates statistical approach in the DTB characterization. The novel two-step-scaling (2SS) method, proposed recently for the size effect-modeling across the DTB transition region, is developed based on the weakest-link statistics and the two-parametric Weibull distribution. Specifically, the size sensitivity of the Weibull parameters of scale and shape are built into the appropriate framework. This approach is upgraded in this article to render the comparison with the existing models more transparent. Specifically, the original 2SS method is enhanced by adding a lower limit on fracture toughness, resulting in the translated (three-parameter) Weibull cumulative distribution function. This third Weibull parameter, often dubbed the location parameter, defines a threshold value that limits the accessible fracture toughness domain. The upgraded 2SS approach is compared to two established methods of the DTB fracture toughness assessment, which favorably reflected upon its generality and application flexibility. C3 - 9th International Congress of the Serbian Society of Mechanics (ICSSM), July 5-7, 2023, Vrnjačka Banja, Serbia T1 - UPGRADED TWO-STEP-SCALING APPROACH TO THE DTB CHARACTERIZATION OF FERRITIC STEELS UR - https://hdl.handle.net/21.15107/rcub_machinery_7099 ER -
@conference{ author = "Mastilović, Sreten and Đorđević, Branislav and Sedmak, Aleksandar", year = "2023", abstract = "The fracture toughness of ferritic steels in the DTB (ductile-to-brittle) transition temperature region is a stochastic extrinsic property known for pronounced experimental data scatter that necessitates statistical approach in the DTB characterization. The novel two-step-scaling (2SS) method, proposed recently for the size effect-modeling across the DTB transition region, is developed based on the weakest-link statistics and the two-parametric Weibull distribution. Specifically, the size sensitivity of the Weibull parameters of scale and shape are built into the appropriate framework. This approach is upgraded in this article to render the comparison with the existing models more transparent. Specifically, the original 2SS method is enhanced by adding a lower limit on fracture toughness, resulting in the translated (three-parameter) Weibull cumulative distribution function. This third Weibull parameter, often dubbed the location parameter, defines a threshold value that limits the accessible fracture toughness domain. The upgraded 2SS approach is compared to two established methods of the DTB fracture toughness assessment, which favorably reflected upon its generality and application flexibility.", journal = "9th International Congress of the Serbian Society of Mechanics (ICSSM), July 5-7, 2023, Vrnjačka Banja, Serbia", title = "UPGRADED TWO-STEP-SCALING APPROACH TO THE DTB CHARACTERIZATION OF FERRITIC STEELS", url = "https://hdl.handle.net/21.15107/rcub_machinery_7099" }
Mastilović, S., Đorđević, B.,& Sedmak, A.. (2023). UPGRADED TWO-STEP-SCALING APPROACH TO THE DTB CHARACTERIZATION OF FERRITIC STEELS. in 9th International Congress of the Serbian Society of Mechanics (ICSSM), July 5-7, 2023, Vrnjačka Banja, Serbia. https://hdl.handle.net/21.15107/rcub_machinery_7099
Mastilović S, Đorđević B, Sedmak A. UPGRADED TWO-STEP-SCALING APPROACH TO THE DTB CHARACTERIZATION OF FERRITIC STEELS. in 9th International Congress of the Serbian Society of Mechanics (ICSSM), July 5-7, 2023, Vrnjačka Banja, Serbia. 2023;. https://hdl.handle.net/21.15107/rcub_machinery_7099 .
Mastilović, Sreten, Đorđević, Branislav, Sedmak, Aleksandar, "UPGRADED TWO-STEP-SCALING APPROACH TO THE DTB CHARACTERIZATION OF FERRITIC STEELS" in 9th International Congress of the Serbian Society of Mechanics (ICSSM), July 5-7, 2023, Vrnjačka Banja, Serbia (2023), https://hdl.handle.net/21.15107/rcub_machinery_7099 .