Publication detail

Determination of Ramberg-Osgood approximation for estimation of low- temperature fracture toughness.

ŠANDERA, P. HORNÍKOVÁ, J. KIANICOVÁ, M. DLOUHÝ, I. POKLUDA, J.

English title

Determination of Ramberg-Osgood approximation for estimation of low- temperature fracture toughness.

Type

conference paper

Language

en

Original abstract

his article presents a new method for determination of parameters of the Ramberg-Osgood (R-O) approxi-mation of the tensile diagram based on the loading-frame displacement. This procedure was successfully verified on thesamples of the high strength steel OCHN3MFA tested at various temperatures with records of both the extensometer elon-gation and the load-frame displacement. The method can be used in the model for prediction of theKIc-value based onthe critical strain local approach. The parameters of the R-O approximation obtained from the extensometer-controlledand the load-frame controlled tests are in a very good agreement. Moreover, the experimentalKIc-value at the cryogenictemperature of 77 K and the theoretical one predicted using the loading-frame displacement data are practically identical.

English abstract

his article presents a new method for determination of parameters of the Ramberg-Osgood (R-O) approxi-mation of the tensile diagram based on the loading-frame displacement. This procedure was successfully verified on thesamples of the high strength steel OCHN3MFA tested at various temperatures with records of both the extensometer elon-gation and the load-frame displacement. The method can be used in the model for prediction of theKIc-value based onthe critical strain local approach. The parameters of the R-O approximation obtained from the extensometer-controlledand the load-frame controlled tests are in a very good agreement. Moreover, the experimentalKIc-value at the cryogenictemperature of 77 K and the theoretical one predicted using the loading-frame displacement data are practically identical.

Keywords in English

Ramberg-Osgood approximation, fracture toughness, cryogenic temperature, tensile test

Released

30.11.2020

Publisher

AIP Publishing LLC.

ISBN

978-0-7354-4045-6

ISSN

1551-7616

Book

Fracture and Damage Mechanics

Volume

2309

Number

1

Pages from–to

020024-1–020024-6

Pages count

6

BIBTEX


@inproceedings{BUT169882,
  author="Pavel {Šandera} and Jana {Horníková} and Marta {Kianicová} and Ivo {Dlouhý} and Jaroslav {Pokluda},
  title="Determination of Ramberg-Osgood approximation for estimation of low- temperature fracture toughness.",
  booktitle="Fracture and Damage Mechanics",
  year="2020",
  volume="2309",
  number="1",
  month="November",
  pages="020024-1--020024-6",
  publisher="AIP Publishing LLC.",
  isbn="978-0-7354-4045-6",
  issn="1551-7616"
}