Detail publikačního výsledku

Experimental evidence of a common local mode II growth mechanism of fatigue cracks loaded in modes II, III and II+III in niobium and titanium

VOJTEK, T.; HOHENWARTER, A.; POKLUDA, J.; PIPPAN, R.

Originální název

Experimental evidence of a common local mode II growth mechanism of fatigue cracks loaded in modes II, III and II+III in niobium and titanium

Anglický název

Experimental evidence of a common local mode II growth mechanism of fatigue cracks loaded in modes II, III and II+III in niobium and titanium

Druh

Článek WoS

Originální abstrakt

The paper is focused on an identification of the local mode II mechanism of fatigue cracks loaded under the remote mode III and the mixed mode II + III and presents a convincing experimental evidence of such a mechanism in materials with a nearly coplanar crack growth. Closure-free data were obtained by applying fatigue experiments in modes II, III and II + III in commercially pure titanium and niobium. The results revealed that the micromechanism of propagation of all kinds of shear-mode cracks can be described by a common model of advances of local mode II crack segments nearly in the direction of applied shear stress. These segments nucleated at spatial geometrical irregularities of the precrack front generating fibrous patterns at fracture surfaces.

Anglický abstrakt

The paper is focused on an identification of the local mode II mechanism of fatigue cracks loaded under the remote mode III and the mixed mode II + III and presents a convincing experimental evidence of such a mechanism in materials with a nearly coplanar crack growth. Closure-free data were obtained by applying fatigue experiments in modes II, III and II + III in commercially pure titanium and niobium. The results revealed that the micromechanism of propagation of all kinds of shear-mode cracks can be described by a common model of advances of local mode II crack segments nearly in the direction of applied shear stress. These segments nucleated at spatial geometrical irregularities of the precrack front generating fibrous patterns at fracture surfaces.

Klíčová slova

Shear loding modes; Local mode II; Growth mechanism; 3D crack path; Coplanar growth

Klíčová slova v angličtině

Shear loding modes; Local mode II; Growth mechanism; 3D crack path; Coplanar growth

Autoři

VOJTEK, T.; HOHENWARTER, A.; POKLUDA, J.; PIPPAN, R.

Rok RIV

2017

Vydáno

01.11.2016

Nakladatel

Elsevier

ISSN

0142-1123

Periodikum

International Journal of Fatigue

Svazek

92

Číslo

1

Stát

Spojené království Velké Británie a Severního Irska

Strany od

470

Strany do

477

Strany počet

8

BibTex

@article{BUT129023,
  author="Tomáš {Vojtek} and Anton {Hohenwarter} and Jaroslav {Pokluda} and Reinhard {Pippan}",
  title="Experimental evidence of a common local mode II growth mechanism of fatigue cracks loaded in modes II, III and II+III in niobium and titanium",
  journal="International Journal of Fatigue",
  year="2016",
  volume="92",
  number="1",
  pages="470--477",
  doi="10.1016/j.ijfatigue.2016.02.042",
  issn="0142-1123"
}