Publication detail

Local Aspects of Shear-Mode Crack Propagation in Austenitic Steel

HOLÁŇ, L. POKLUDA, J. SLÁMEČKA, K.

Czech title

Lokální aspekty šíření trhlin ve smykových módech v austenitické oceli

English title

Local Aspects of Shear-Mode Crack Propagation in Austenitic Steel

Type

journal article - other

Language

en

Original abstract

An original and efficient testing setup has been designed in collaboration of the Institut of Physical Engineering and the Erich-Schmid Institute of Materials Science in Leoben. This device allows simultaneous fatigue crack propagation in pure shear modes II and III in a single specimen. The specimens were made of austenitic (x5NiCrTi26-15) steel and loaded under shear stress range from 80 MPa to 220 MPa with loading ratio R = 0.1. The stereophotogrammetrical reconstruction of the fracture surface morphology in the scanning electron microscope was performed. The analysis showed that the 3D topology of factory-roof patterns in torsion loading is very similar to that identified in the case of cyclic shear loading.

Czech abstract

Originální testovací zařízení pro souběžné pozorování růstu trhlin ve smykových módech II a III bylo vyvinuto ve spolupráci ústavů Fyzikálního inženýrství a Ericha-Schmida v Leobenu, Rakousko. Studované vzorky byly vyrobeny z austenitické oceli a zatěžovány smykovými napětími v rozmezí 80 – 220 MPa při cyklickém poměru R = 0.1. Stereofotogrammetrická rekonstrukce lomových povrchů ukázala, že 3D topologie "factory roof" je velmi podobná morfologii při cyklickém krutu.

English abstract

An original and efficient testing setup has been designed in collaboration of the Institut of Physical Engineering and the Erich-Schmid Institute of Materials Science in Leoben. This device allows simultaneous fatigue crack propagation in pure shear modes II and III in a single specimen. The specimens were made of austenitic (x5NiCrTi26-15) steel and loaded under shear stress range from 80 MPa to 220 MPa with loading ratio R = 0.1. The stereophotogrammetrical reconstruction of the fracture surface morphology in the scanning electron microscope was performed. The analysis showed that the 3D topology of factory-roof patterns in torsion loading is very similar to that identified in the case of cyclic shear loading.

Keywords in Czech

smykové trhliny, lokální drsnost, rychlost růstu trhliny, mikromechanismy růstu, austenitická ocel

Keywords in English

shear cracks, local roughness, crack growth rate, growth micromechanisms, austenitic steel

RIV year

2010

Released

01.05.2010

ISSN

0009-2770

Journal

Chemické listy

Volume

104

Number

15

Pages from–to

314–317

Pages count

4

BIBTEX


@article{BUT48104,
  author="Libor {Holáň} and Jaroslav {Pokluda} and Karel {Slámečka},
  title="Local Aspects of Shear-Mode Crack Propagation in Austenitic Steel",
  journal="Chemické listy",
  year="2010",
  volume="104",
  number="15",
  month="May",
  pages="314--317",
  issn="0009-2770"
}