Detail publikace

Mikromechanismy šíření únavových trhlin ve smykových módech v austenitické oceli

HOLÁŇ, L. POKLUDA, J. PIPPAN, R.

Originální název

Mikromechanismy šíření únavových trhlin ve smykových módech v austenitické oceli

Anglický název

Mikromechanisms of fatigue crack propagation under shear modes in austenitic steel

Typ

článek ve sborníku ve WoS nebo Scopus

Jazyk

čeština

Originální abstrakt

Two experimental arrangements allowing loading of two different cylindrical specimens with circumferential notches were used to measure threshold values of the stress intensity factor range and the near-threshold crack growth rates under shear loading modes II and III. Fatigue cracks under shear mode II were kinked while those under shear mode III were twisted. Therefore, all cracks propagated rather under a pure local mode I. Micromechanisms of crack growths under shear modes II and III were evaluated by means of stereophotogrammetry and optical chromatography. The values of intrinsic thresholds under modes II and III were found to be KII,ith = 2,9 MPa.m1/2 and KIII,ith = 4,0 MPa.m1/2, respectively.

Anglický abstrakt

Two experimental arrangements allowing loading of two different cylindrical specimens with circumferential notches were used to measure threshold values of the stress intensity factor range and the near-threshold crack growth rates under shear loading modes II and III. Fatigue cracks under shear mode II were kinked while those under shear mode III were twisted. Therefore, all cracks propagated rather under a pure local mode I. Micromechanisms of crack growths under shear modes II and III were evaluated by means of stereophotogrammetry and optical chromatography. The values of intrinsic thresholds under modes II and III were found to be KII,ith = 2,9 MPa.m1/2 and KIII,ith = 4,0 MPa.m1/2, respectively.

Klíčová slova

mikromechanismy šíření, smykové módy, prahové hodnoty šíření

Klíčová slova v angličtině

micromechanisms of crack propagation, shear modes, threshold crack growth rate

Autoři

HOLÁŇ, L.; POKLUDA, J.; PIPPAN, R.

Rok RIV

2010

Vydáno

2. 12. 2010

ISBN

978-80-87434-02-4

Kniha

Víceúrovňový design pokrokových materiálů 10

Strany od

107

Strany do

114

Strany počet

8

BibTex

@inproceedings{BUT35346,
  author="Libor {Holáň} and Jaroslav {Pokluda} and Reinhard {Pippan}",
  title="Mikromechanismy šíření únavových trhlin ve smykových módech v austenitické oceli",
  booktitle="Víceúrovňový design pokrokových materiálů 10",
  year="2010",
  pages="107--114",
  isbn="978-80-87434-02-4"
}