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Prediction of fracture toughness temperature dependance from tensile test parameters
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SYSNO ASEP 0355162 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Prediction of fracture toughness temperature dependance from tensile test parameters Author(s) Šmida, T. (SK)
Babjak, J. (SK)
Dlouhý, Ivo (UFM-A) RID, ORCIDSource Title Kovové materiály. - : Ústav fyziky materiálu AV ČR, v. v. i. - : Ústav materiálov a mechaniky strojov SAV. - : Ústav materiálového výskumu SAV. - : Strojnícka fakulta STU - ISSN 0023-432X
Roč. 48, č. 6 (2010), s. 345-352Number of pages 8 s. Language eng - English Country CZ - Czech Republic Keywords steels ; brittle to ductile transition ; fracture Subject RIV JL - Materials Fatigue, Friction Mechanics R&D Projects GAP108/10/0466 GA ČR - Czech Science Foundation (CSF) 1QS200410502 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) CEZ AV0Z20410507 - UFM-A (2005-2011) UT WOS 000285697100002 Annotation The reference temperature localizing the fracture toughness temperature diagram on temperature axis was predicted based on tensile test data. Regularization neural network was developed to solve the correlation of these properties. Three-point bend specimens were applied to determine fracture toughness. The fracture toughness transition dependence was quantified by means of master curve concept enabling to represent it using one parameter, i.e. reference temperature. The reference temperature was calculated applying the multi-temperature method. Different strength and deformation characteristics and parameters were determined from standard tensile specimens focusing on data from localized deformation during specimen necking. Tensile samples with circumferential notch were also examined. In total 29 data sets from low-alloy steels were applied for the analyses. A good correlation of predicted and experimentally determined values of reference temperature was found. Workplace Institute of Physics of Materials Contact Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Year of Publishing 2011
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