Počet záznamů: 1

Prediction of fracture toughness temperature dependance from tensile test parameters

  1. 1.
    0355162 - UFM-A 2011 RIV CZ eng J - Článek v odborném periodiku
    Šmida, T. - Babjak, J. - Dlouhý, Ivo
    Prediction of fracture toughness temperature dependance from tensile test parameters.
    Kovové materiály. Roč. 48, č. 6 (2010), s. 345-352 ISSN 0023-432X
    Grant CEP: GA ČR(CZ) GAP108/10/0466; GA AV ČR 1QS200410502
    Výzkumný záměr: CEZ:AV0Z20410507
    Klíčová slova: steels * brittle to ductile transition * fracture
    Kód oboru RIV: JL - Únava materiálu a lomová mechanika
    Impakt faktor: 0.471, rok: 2010

    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.
    Trvalý link: http://hdl.handle.net/11104/0006293