Minimization of stress concentration factors in fatigue crack repairs

J.E Rodriguez, F.P Brennan, W.D Dover

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

A numerical study is reported of a repair by flaw removal on a conventional welded joint. The repair profile is optimized with respect to the flaw and joint dimensions in order to minimize the resulting stress concentration factor (SCF). Two dimensional (edge repair) and three dimensional (surface repair) finite element analyses were made for the determination of SCF values and a graphical representation of results is presented. A relation between edge repair and surface repair is obtained and short and long repairs are defined. The weld geometry and repair orientation effects on SCF values are discussed. Finally, implications on using short and long repairs on fatigue initiation and inspection are presented.

LanguageEnglish
Pages719-725
Number of pages7
JournalInternational Journal of Fatigue
Volume20
Issue number10
DOIs
Publication statusPublished - 30 Nov 1998

Fingerprint

Stress Concentration Factor
Fatigue Crack
Repair
Stress concentration
Welds
Fatigue cracks
Welded Joints
Defects
Graphical Representation
Fatigue
Inspection
Numerical Study
Fatigue of materials
Finite Element
Minimise
Three-dimensional

Keywords

  • fatigue crack growth
  • finite elements
  • repair technologies
  • stress concentration factors

Cite this

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Minimization of stress concentration factors in fatigue crack repairs. / Rodriguez, J.E; Brennan, F.P; Dover, W.D.

In: International Journal of Fatigue, Vol. 20, No. 10, 30.11.1998, p. 719-725.

Research output: Contribution to journalArticle

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