Detail publikace

Evaluation of notch geometry effect on behaviour of fracture toughness testing specimen

SEITL, S. KLUSÁK, J. KERŠNER, Z. KNÉSL, Z.

Originální název

Evaluation of notch geometry effect on behaviour of fracture toughness testing specimen

Anglický název

Evaluation of notch geometry effect on behaviour of fracture toughness testing specimen

Typ

abstrakt

Jazyk

čeština

Originální abstrakt

The basic fracture properties of cement-based composite are ascertained on the basic of test evaluations of the specimens in suitable test configurations. Three-point bending specimens with a central starting notch are the most frequently used specimens for laboratory testing. Through models of elastic cracks the critical crack length and effective fracture toughness (or toughness) can be calculated. The influence of the geometry of the starting notch in a three-point bend specimen on the resulting values of critical applied force and fracture toughness is studied in this paper. To this end, a crack initiation at the notch tip is numerically simulated. It is shown that the values of fracture toughness obtained for specimens with larger widths of starting notch can be overestimated.

Anglický abstrakt

TThe basic fracture properties of cement-based composite are ascertained on the basic of test evaluations of the specimens in suitable test configurations. Three-point bending specimens with a central starting notch are the most frequently used specimens for laboratory testing. Through models of elastic cracks the critical crack length and effective fracture toughness (or toughness) can be calculated. The influence of the geometry of the starting notch in a three-point bend specimen on the resulting values of critical applied force and fracture toughness is studied in this paper. To this end, a crack initiation at the notch tip is numerically simulated. It is shown that the values of fracture toughness obtained for specimens with larger widths of starting notch can be overestimated.

Klíčová slova

effect on behaviour, fracture toughness, three-point bending

Klíčová slova v angličtině

effect on behaviour, fracture toughness, three-point bending

Autoři

SEITL, S.; KLUSÁK, J.; KERŠNER, Z.; KNÉSL, Z.

Vydáno

14. 5. 2007

Místo

Svratka, Česká republika

Strany od

243

Strany do

244

Strany počet

2

BibTex

@misc{BUT60633,
  author="Stanislav {Seitl} and Jan {Klusák} and Zbyněk {Keršner} and Zdeněk {Knésl}",
  title="Evaluation of notch geometry effect on behaviour of fracture toughness testing specimen",
  year="2007",
  pages="243--244",
  address="Svratka, Česká republika",
  note="abstract"
}