Mode I fracture toughness of human bone

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

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

18 Scopus citations

Abstract

The critical strain energy release rate (GC) and the critical stress intensity factor (KC) were determined from mode I compact tension testing of human bone. The effect of thickness was also investigated because specimens obtained from human bone do not meet ASTM size requirements due to cortical thickness and curvature of human bone. Calculated values of KC from testing of bovine bone over a range of thicknesses indicated that plain strain conditions were obtained, however, results from GC did not show a similar trend. Reductions in fracture toughness as a result thickness effects were found to be significant. Fracture toughness tests indicated that KC and GC for human bone are approximately 579 N/m and 4.48 MNm-3/2, respectively, for 3 mm human bone specimens. A method of correcting fracture toughness parameters was developed which yielded KC and GC equal to 3.65 MNm-3/2 and 365 N/m, respectively.

Original languageEnglish (US)
Title of host publication1991 Advances in Bioengineering
PublisherPubl by ASME
Pages361-364
Number of pages4
ISBN (Print)0791808890
StatePublished - Dec 1 1991
EventWinter Annual Meeting of the American Society of Mechanical Engineers - Atlanta, GA, USA
Duration: Dec 1 1991Dec 6 1991

Publication series

NameAmerican Society of Mechanical Engineers, Bioengineering Division (Publication) BED
Volume20

Other

OtherWinter Annual Meeting of the American Society of Mechanical Engineers
CityAtlanta, GA, USA
Period12/1/9112/6/91

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ASJC Scopus subject areas

  • Engineering(all)

Cite this

Norman, T. L., Vashishth, D., & Burr, D. B. (1991). Mode I fracture toughness of human bone. In 1991 Advances in Bioengineering (pp. 361-364). (American Society of Mechanical Engineers, Bioengineering Division (Publication) BED; Vol. 20). Publ by ASME.