Toughness Scaling Model Applications

Dlouhý, Ivo; Kozák, Vladislav; Holzmann, M.

doi:10.1007/978-94-010-0608-8_14

Cited by 2 publications

(2 citation statements)

References 18 publications

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“…to determine the master curve and the scatter band, only one value, the reference temperature, is necessary to know. This may be determined either experimentally based on standard fracture toughness tests [6] and/or test by applying subsized test specimens [8,9]. Some attempts have been also made to predict this temperature based on theoretical considerations [5,10].…”

Section: Introductionmentioning

confidence: 99%

Prediction of fracture toughness temperature dependance from tensile test parameters

Dlouhý¹,

Smida²,

Babjak³

2010

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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.K e y w o r d s : steels, brittle to ductile transition, fracture, toughness, artificial neural network (ANN)

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Section: Introductionmentioning

confidence: 99%

Prediction of fracture toughness temperature dependance from tensile test parameters

Dlouhý¹,

Smida²,

Babjak³

2010

View full text Add to dashboard Cite

show abstract

“…Its application to testing the notch toughness of semi-products and products from which standard test bars cannot be made necessitated studying the influence of the test bar thickness, the notch shape, the specimen dimensions, as well as the loading rate, etc. on the characteristics that can be obtained using the notched-bar impact test [3,4,5,6,7].…”

Section: Introductionmentioning

confidence: 99%