Detail publikačního výsledku

The Mixed-Mode Fracture Resistance of C 50/60 and its Suitability for Use in Precast Elements as Determined by the Brazilian Disc Test and Three-Point Bending Specimens

SEITL, S.; MIARKA, P.; BÍLEK, V.

Originální název

The Mixed-Mode Fracture Resistance of C 50/60 and its Suitability for Use in Precast Elements as Determined by the Brazilian Disc Test and Three-Point Bending Specimens

Anglický název

The Mixed-Mode Fracture Resistance of C 50/60 and its Suitability for Use in Precast Elements as Determined by the Brazilian Disc Test and Three-Point Bending Specimens

Druh

Článek WoS

Originální abstrakt

The mixed mode fracture behaviour of C 50/60 concrete was studied both experimentally and theoretically using two different test configurations (three-point bending and Brazilian disc tests with various crack lengths). Different fracture behaviour in mode I was observed for the tested specimens. The level of crack tip constraint in the test-specimens (which relates to the stress intensity factors (SIF or K) and the T-stress) was used as the main parameter for predicting the mixed mode fracture results based on a two parameter (K-T) linear elastic fracture theory. To predict the crack initiation angles and fracture resistances, the generalized maximum tangential stress (GMTS) criterion was employed. The GMTS simultaneously involves the effects of the mixed mode SIFs, the T-stress and a critical distance rC. For each test configuration, a fracture initiation direction, a fracture toughness and mixed mode fracture resistance curves were obtained throughout the entire range of the mixed mode I/II loading conditions. It was observed that for all specimens the loss of the crack tip constraint increases the mixed mode fracture resistance and decreases the fracture initiation direction and vice versa.

Anglický abstrakt

The mixed mode fracture behaviour of C 50/60 concrete was studied both experimentally and theoretically using two different test configurations (three-point bending and Brazilian disc tests with various crack lengths). Different fracture behaviour in mode I was observed for the tested specimens. The level of crack tip constraint in the test-specimens (which relates to the stress intensity factors (SIF or K) and the T-stress) was used as the main parameter for predicting the mixed mode fracture results based on a two parameter (K-T) linear elastic fracture theory. To predict the crack initiation angles and fracture resistances, the generalized maximum tangential stress (GMTS) criterion was employed. The GMTS simultaneously involves the effects of the mixed mode SIFs, the T-stress and a critical distance rC. For each test configuration, a fracture initiation direction, a fracture toughness and mixed mode fracture resistance curves were obtained throughout the entire range of the mixed mode I/II loading conditions. It was observed that for all specimens the loss of the crack tip constraint increases the mixed mode fracture resistance and decreases the fracture initiation direction and vice versa.

Klíčová slova

Fracture Mechanics; Fracture Toughness; Brazilian Disc Test with Central Notch; Mixed mode I/II; Concrete.

Klíčová slova v angličtině

Fracture Mechanics; Fracture Toughness; Brazilian Disc Test with Central Notch; Mixed mode I/II; Concrete.

Autoři

SEITL, S.; MIARKA, P.; BÍLEK, V.

Rok RIV

2019

Vydáno

07.08.2018

Nakladatel

Elsevier

ISSN

0167-8442

Periodikum

THEORETICAL AND APPLIED FRACTURE MECHANICS

Svazek

2018

Číslo

97

Stát

Nizozemsko

Strany od

108

Strany do

119

Strany počet

12

URL

https://www.sciencedirect.com/science/article/pii/S0167844218301356?via%3Dihub#!

BibTex

@article{BUT149121,
  author="Stanislav {Seitl} and Petr {Miarka} and Vlastimil {Bílek}",
  title="The Mixed-Mode Fracture Resistance of C 50/60 and its Suitability for Use in Precast Elements as Determined by the Brazilian Disc Test and Three-Point Bending Specimens",
  journal="THEORETICAL AND APPLIED FRACTURE MECHANICS",
  year="2018",
  volume="2018",
  number="97",
  pages="108--119",
  doi="10.1016/j.tafmec.2018.08.003",
  issn="0167-8442",
  url="https://www.sciencedirect.com/science/article/pii/S0167844218301356?via%3Dihub#!"
}