Effect of groove on bone fracture toughness

T. L. Norman, D. Vashishth, D. B. Burr

Research output: Contribution to journalArticle

37 Scopus citations


When testing for the effects of bone orientation on mode I fracture toughness, compact tension specimens are grooved with a V-notch to provide a crack guide. The effect of grooving on the expressions for the critical stress intensity factor (Kc) and the critical strain energy release rate (Gc) for mode I fracture toughness was investigated. Experiments were performed using grooved and ungrooved bovine compact tension specimens. The results indicate that the standard expression used to determine Kc for a compact tension specimen requires modification. The thickness (B) must be modified to account for the thickness between the grooves (Bn). The thickness used in the standard expression is replaced by an effective thickness written as (BBn)0.5. It was also found that the thickness between the grooves should be used in the standard formula for Gc.

Original languageEnglish (US)
Pages (from-to)1489-1492
Number of pages4
JournalJournal of Biomechanics
Issue number12
StatePublished - Dec 1992

ASJC Scopus subject areas

  • Biophysics
  • Orthopedics and Sports Medicine
  • Biomedical Engineering
  • Rehabilitation

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    Norman, T. L., Vashishth, D., & Burr, D. B. (1992). Effect of groove on bone fracture toughness. Journal of Biomechanics, 25(12), 1489-1492. https://doi.org/10.1016/0021-9290(92)90061-5