Fracture toughness and fracture crack propagation rate of short fiber reinforced epoxy composites for analogue cortical bone

Alexander C.M. Chong, Elizabeth A. Friis

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

Abstract

Third generation synthetic mechanical analogue models of bones manufactured by Pacific Research Laboratories. Inc. (PRL) are popular tools for use in mechanical testing of various orthopaedic implants. One problem with these models is that the current epoxyshort fiberglass composite used as the cortical bone substitute is susceptible to crack formation and failure in fatigue. The purpose of the present study was to compare fracture mechanics properties of the current baseline (established PRL "Third Generation'" E-glass-fiberepoxy) composite analogue for cortical bone to six new composite materials formulations proposed for use as a 4th generation cortical bone analogue material. Plane strain fracture toughness tests were performed on all materials; fracture toughness was significantly increased as much as 58% in the new composites as compared to the baseline. Fatigue crack propagation rate tests were performed on the baseline material and the new composite with the greatest increase in fracture toughness. The fatigue crack propagation rate was significantly decreased in the enhanced composite. These results indicate that the bone analogue models using this new analogue cortical bone material may exhibit superior performance in fracture and fatigue. Further testing of the new composite materials in bone models is required.

Original languageEnglish (US)
Title of host publicationProceedings of the 2005 Summer Bioengineering Conference, 2005 SBC
Pages215-216
Number of pages2
StatePublished - 2005
Event2005 Summer Bioengineering Conference - Vail, CO, United States
Duration: Jun 22 2005Jun 26 2005

Publication series

NameProceedings of the 2005 Summer Bioengineering Conference
Volume2005

Conference

Conference2005 Summer Bioengineering Conference
CountryUnited States
CityVail, CO
Period6/22/056/26/05

ASJC Scopus subject areas

  • Engineering(all)

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  • Cite this

    Chong, A. C. M., & Friis, E. A. (2005). Fracture toughness and fracture crack propagation rate of short fiber reinforced epoxy composites for analogue cortical bone. In Proceedings of the 2005 Summer Bioengineering Conference, 2005 SBC (pp. 215-216). (Proceedings of the 2005 Summer Bioengineering Conference; Vol. 2005).