Uncertainty Quantification of the Ductile-Brittle Transition Temperature T0 of 16mnd5 Steel from Experimental and Numerical Fracture Toughness Tests
SSRN, ISSN: 1556-5068
2024
- 230Usage
- 1Captures
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Example: if you select the 1-year option for an article published in 2019 and a metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019. If you select the 3-year option for the same article published in 2019 and the metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019, 2018 and 2017.
Citation Benchmarking is provided by Scopus and SciVal and is different from the metrics context provided by PlumX Metrics.
Article Description
The Master Curve methodology, standardized ASTM E1921, provides a direct characterization of the ductile-brittle transition temperature T0. Guaranteeing an accurate estimation of T0 is a major challenge due to its sensitivity to various parameters, including test matrix (number of specimens, test temperatures) and geometry configuration (dimensions, precrack front). This dependence is all the more significant with the new miniaturized mini-CT specimens. This paper discusses requirements of ASTM E1921 standard and gives recommendations for different specimen sizes. The analyses are based on finite element analysis, Beremin cleavage fracture model and Monte Carlo simulations to quantify the statistical dispersion of T0 estimates. The main conclusions provide recommendations for a more accurate estimation of T0 and suggestions for updating the standard requirements. These include recommendations on the number of tests, the estimation of standard deviation, a suggested new test temperature range for mini-CTs, an extended range of dimensional imperfections, and updates to precrack front specifications.
Bibliographic Details
Elsevier BV
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