A Brazilian disk for measuring fracture toughness of orthotropic materials

Y. Huang*, C. Liu, M. G. Stout

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

17 Scopus citations


A Brazilian disk test specimen is calibrated for the determination of the mixed-mode fracture toughness of orthotropic materials. The specimen is well-suited for investigating the fracture toughness of orthotropic materials over the complete range of mode mixtures, 0-90°. The K dominance zone around the crack tip exists and can be as large as a/5 for the Brazilian disk, provided that the zone of nonlinear effects is small (a is the half-crack length). The rationale for determining the stress intensity factors under mixed-mode loading conditions and the calibration curves, relevant to a number of orthotropic materials, relating maximum load and loading angle to KI and KII are presented.

Original languageEnglish (US)
Pages (from-to)1223-1232
Number of pages10
JournalActa Materialia
Issue number3
StatePublished - Mar 1996

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Polymers and Plastics
  • Metals and Alloys


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