Mechanical model for fracture toughness assessment

Authors

  • Alexander A. Baron Volgograd State Tecnical University

DOI:

https://doi.org/10.5755/j01.mech.23.1.13941

Keywords:

fracture toughness, Brinell hardness, material properties degradation, low temperatures, thermoactivated plastic strain

Abstract

Nuclear reactor vessels, transit oil or gas pipelines and many other high risk facilities tend to exhaust their design service life due to material properties degradation. The fracture toughness assessment for such equipment in operation poses a real technical challenge. The limited volume of materials which are available for testing, results in the need for small specimen technology. The method suggested is based on direct fracture toughness determination using very small specimens, at the liquid nitrogen temperature. After that, the KIC values at the operational temperatures can be calculated using the  model proposed by the author.

DOI: http://dx.doi.org/10.5755/j01.mech.23.1.13941

Author Biography

  • Alexander A. Baron, Volgograd State Tecnical University

    Machine Parts Dept,

    Full professor,

    Dr.Sci.

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Published

2017-03-01

Issue

Vol. 23 No. 1 (2017)

Section

MECHANICS OF SOLID BODIES

License

The copyright for the articles in this journal is retained by the author(s) with the first publication right granted to the journal. The journal is licensed under the Creative Commons Attribution License 4.0 (CC BY 4.0).