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 limits the acc...essible 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:
Collection of Articles from the Ninth International Congress of the Serbian Society of Mechanics, 2023Издавач:
- Serbian Society of Mechanics
Финансирање / пројекти:
- This research was supported by the Ministry of Education, Science and Technological Development of the Republic of Serbia.
Напомена:
- The papers presented at the Ninth International Congress of the Serbian Society of Mechanics (July 5-7, 2023, Vrnjačka Banja, Serbia) were not published in the usual proceedings format, neither in paper nor in electronic form, but only as a collection of peer-reviewed and accepted articles published at the congress internet site.
Институција/група
Institut za multidisciplinarna istraživanjaTY - CONF AU - Mastilović, Sreten AU - Djordjević, Branislav AU - sedmak, aleksandar PY - 2023 UR - http://rimsi.imsi.bg.ac.rs/handle/123456789/2067 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. PB - Serbian Society of Mechanics C3 - Collection of Articles from the Ninth International Congress of the Serbian Society of Mechanics T1 - Upgraded Two-Step-Scaling Approach to the DTB Characterization of Ferritic Steels UR - https://hdl.handle.net/21.15107/rcub_rimsi_2067 ER -
@conference{ author = "Mastilović, Sreten and Djordjević, 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.", publisher = "Serbian Society of Mechanics", journal = "Collection of Articles from the Ninth International Congress of the Serbian Society of Mechanics", title = "Upgraded Two-Step-Scaling Approach to the DTB Characterization of Ferritic Steels", url = "https://hdl.handle.net/21.15107/rcub_rimsi_2067" }
Mastilović, S., Djordjević, B.,& sedmak, a.. (2023). Upgraded Two-Step-Scaling Approach to the DTB Characterization of Ferritic Steels. in Collection of Articles from the Ninth International Congress of the Serbian Society of Mechanics Serbian Society of Mechanics.. https://hdl.handle.net/21.15107/rcub_rimsi_2067
Mastilović S, Djordjević B, sedmak A. Upgraded Two-Step-Scaling Approach to the DTB Characterization of Ferritic Steels. in Collection of Articles from the Ninth International Congress of the Serbian Society of Mechanics. 2023;. https://hdl.handle.net/21.15107/rcub_rimsi_2067 .
Mastilović, Sreten, Djordjević, Branislav, sedmak, aleksandar, "Upgraded Two-Step-Scaling Approach to the DTB Characterization of Ferritic Steels" in Collection of Articles from the Ninth International Congress of the Serbian Society of Mechanics (2023), https://hdl.handle.net/21.15107/rcub_rimsi_2067 .