Scattered-light determination of mode I stress-intensity factors by a fringe gradient independent technique

A. E. Segall, J. C. Conway

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

Integration of the scattered-light stress-optic law and established bending and singular crack-tip relationships yielded new experimental equations for calibration and for the determination of mode I stress-intensity factors which are independent of a stress-fringe gradient. Scattered-light stressoptic coefficients determined from four-point bending tests and an integrated scattered-light bending equation show good agreement with values based on stress-fringe gradients computed with polynomials. Excellent agreement was also shown between mode I stress-intensity factors predicted by the integrated stress-optic equation and analytical solutions available in the literature. Favorable comparisons were also made with predictions based on a polynomial-finite-difference method of determining a stress-fringe gradient. Analyses were limited to flaw geometries and locations where there was minimal rotation of the refraction tensor.

Original languageEnglish (US)
Pages (from-to)173-176
Number of pages4
JournalExperimental Mechanics
Volume30
Issue number2
DOIs
StatePublished - Jun 1 1990

All Science Journal Classification (ASJC) codes

  • Aerospace Engineering
  • Mechanics of Materials
  • Mechanical Engineering

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