Publication result detail

Simple Calculation of Geometrical Shielding at Intergranular Crack Front by Means of Pyramidal Model

ŠANDERA, P., HORNÍKOVÁ, J., POKLUDA, J.

Original Title

Simple Calculation of Geometrical Shielding at Intergranular Crack Front by Means of Pyramidal Model

English Title

Simple Calculation of Geometrical Shielding at Intergranular Crack Front by Means of Pyramidal Model

Type

Paper in proceedings (conference paper)

Original Abstract

The paper presents a simple pyramidal model of a real intergranular crack front enabling the analytical calculation of the effective stress intensity factor. This analytical approach yields values well comparable with the data obtained by a boundary element numerical procedure applied to real-like intergranular crack fronts. It enables to separate the geometrical shielding level from the measured fracture toughness values in order to obtain the real averaged grain boundary fracture energy. In this way, some apparently paradox phenomena can be quantitatively elucidated, e.g. the increase in fracture toughness with increasing solution annealing temperature in ultra-high strength low alloy steels.

English abstract

The paper presents a simple pyramidal model of a real intergranular crack front enabling the analytical calculation of the effective stress intensity factor. This analytical approach yields values well comparable with the data obtained by a boundary element numerical procedure applied to real-like intergranular crack fronts. It enables to separate the geometrical shielding level from the measured fracture toughness values in order to obtain the real averaged grain boundary fracture energy. In this way, some apparently paradox phenomena can be quantitatively elucidated, e.g. the increase in fracture toughness with increasing solution annealing temperature in ultra-high strength low alloy steels.

Keywords

pyramidal model, intergranular crack front, stress intensity factor, BEM, shielding level, fracture toughness, UHSLA steel.

Key words in English

pyramidal model, intergranular crack front, stress intensity factor, BEM, shielding level, fracture toughness, UHSLA steel.

Authors

ŠANDERA, P., HORNÍKOVÁ, J., POKLUDA, J.

Released

01.01.2002

Publisher

EMAS

Location

Krakow

ISBN

-88906-04-6

Book

Fracture Mechanics Beyond 2000, ECF 14

Pages from

383

Pages count

8

Full text in the Digital Library

http://hdl.handle.net/

BibTex

@inproceedings{BUT10293,
  author="Pavel {Šandera} and Jana {Horníková} and Jaroslav {Pokluda}",
  title="Simple Calculation of Geometrical Shielding at Intergranular Crack Front by Means of Pyramidal Model",
  booktitle="Fracture Mechanics Beyond 2000, ECF 14",
  year="2002",
  number="1",
  pages="8",
  publisher="EMAS",
  address="Krakow",
  isbn="-88906-04-6"
}