RMS SIF weight functions for surface cracks: an illustration of capabilities and limitations

A. Chahardehi, F. P. Brennan

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

Abstract

This paper discusses the problem of surface crack growth and its modelling. The concept of root mean square stress intensity factors (RMS SIF) is discussed for the general class of semielliptical surface cracks and its advantage over the traditional two point (or multi-point) SIF approach in conjunction with the Paris law is emphasised. A novel technique for the derivation of the RMS SIF weight functions for surface cracks is presented and results are compared with numerical solutions for a variety of loadings and geometries.

Original languageEnglish
Title of host publication17th European Conference on Fracture 2008
Subtitle of host publicationmultilevel approach to fracture of materials, components and structures
EditorsJaroslav Pokluda, Pavel Sandera, Petr Lukas, Ivo Dlouhy
Place of PublicationNew York
Pages476-483
Number of pages8
Volume1
Publication statusPublished - 1 Dec 2008
Externally publishedYes
Event17th European Conference on Fracture 2008: Multilevel Approach to Fracture of Materials, Components and Structures, ECF17 - Brno, Czech Republic
Duration: 2 Sep 20085 Sep 2008

Conference

Conference17th European Conference on Fracture 2008: Multilevel Approach to Fracture of Materials, Components and Structures, ECF17
CountryCzech Republic
CityBrno
Period2/09/085/09/08

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Keywords

  • crack aspect ratio
  • Paris law
  • RMS SIF
  • stress intensity factor
  • surface crack
  • weight function

Cite this

Chahardehi, A., & Brennan, F. P. (2008). RMS SIF weight functions for surface cracks: an illustration of capabilities and limitations. In J. Pokluda, P. Sandera, P. Lukas, & I. Dlouhy (Eds.), 17th European Conference on Fracture 2008: multilevel approach to fracture of materials, components and structures (Vol. 1, pp. 476-483). New York.