Evaluation of materials defect influence on fatigue crack threshold

Leonavičius, Mindaugas Kazimieras; Bobyliov, Konstantin; Krenevičius, Algimantas; Stupak, Stanislav; Stupak, Eugeniuš

Use this URL to cite this publication: https://hdl.handle.net/20.500.14911/145205

Evaluation of materials defect influence on fatigue crack threshold

Details

Publication Type (CRIS)

Straipsnis Web of Science duomenų bazėje / Article in Web of Science database (S1a)

Publication Type (eLABa)

Straipsnis Web of Science DB / Web of Science DB article (S1)

Author(s)

Author	Affiliation
Leonavičius, Mindaugas Kazimieras	Taikomosios mechanikos katedra / Department of Applied Mechanics (0260)
Bobyliov, Konstantin	Taikomosios mechanikos katedra / Department of Applied Mechanics (0260)
Krenevičius, Algimantas	Taikomosios mechanikos katedra / Department of Applied Mechanics (0260)
Stupak, Stanislav	Taikomosios mechanikos katedra / Department of Applied Mechanics (0260)
Stupak, Eugeniuš	Taikomosios mechanikos katedra / Department of Applied Mechanics (0260)

Title

Evaluation of materials defect influence on fatigue crack threshold

[en]

M. Leonavičius, K. Bobyliov, A. Krenevičius, S. Stupak, E. Stupak

Is part of

Kovové materiály : Metallic Materials

Published In

Year	Volume	Issue	Start Page	End Page
2007	45	5	255	261

Publisher

Bratislava : Institute of Materials and Machine Mechanics

Publisher (trusted)

Institute of Materials and Machine Mechanics

Referenced in Database(s)(DBs)

Science Citation Index Expanded (Web of Science)

Extent

p. 255-261

URI

URI
https://hdl.handle.net/20.500.14911/145205

Cited references

Science / Art Area

Technologijos mokslai / Technological sciences (T)

Field of Science / Art

Medžiagų inžinerija / Materials engineering (T008)

Keywords (en)

Abstract (en)

The object of performed investigation is fatigue crack propagation in spheroid graphite cast iron with shrinkage voids. These voids influence on CT specimen’s section properties has been evaluated. The decrease of the threshold Δ K th obtained in specimens with voids compared to specimens without voids during natural tests has been investigated by means of different computational methods. The determined cracking threshold Δ K th of investigated specimens without defects varies from 8.4 MPa √m up to 10 MPa √m, of CT specimens with defects - from 6.3 MPa √m up to 8 MPa √m.The comparison of stress intensity factor values obtained by analytical and numerical calculations shows a satisfactory similarity (with approx. 10 % difference).