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ŠANDERA, P., HORNÍKOVÁ, J., POKLUDA, J.
Original Title
Simple Calculation of Geometrical Shielding at Intergranular Crack Front by Means of Pyramidal Model
Type
conference paper
Language
English
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.
Keywords
pyramidal model, intergranular crack front, stress intensity factor, BEM, shielding level, fracture toughness, UHSLA steel.
Authors
RIV year
2002
Released
1. 1. 2002
Publisher
EMAS
Location
Krakow
ISBN
-88906-04-6
Book
Fracture Mechanics Beyond 2000, ECF 14
Edition number
1
Pages from
383
Pages to
390
Pages count
8
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" }