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TECHNICAL PAPERS: Soft Tissues

Compressive and Shear Properties of Commercially Available Polyurethane Foams

[+] Author and Article Information
Mark S. Thompson, Ian D. McCarthy, Lars Lidgren

Department of Orthopaedics, Lund University Hospital, Lund 22185, Sweden

Leif Ryd

Department of Orthopaedics, Linköping University Hospital, Linköping 58185, Sweden

J Biomech Eng 125(5), 732-734 (Oct 09, 2003) (3 pages) doi:10.1115/1.1614820 History: Received October 01, 2002; Revised March 31, 2003; Online October 09, 2003
Copyright © 2003 by ASME
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References

Wilsea,  M., Johnson,  K. L., and Ashby,  M. F., 1975, “Indentation of Foamed Plastics,” International Journal of Mechanical Sciences, 17, pp. 457–460.
Szivek,  J. A., Thompson,  J. D., and Benjamin,  J. B., 1995, “Characterization of Three Formulations of a Synthetic Foam as Models for a Range of Human Cancellous Bone Types,” J. Appl. Biomater, 6, pp. 125–128.
Goods,  S. H., Neuschwanger,  C. L., Henderson,  C. C., and Skala,  D. M., 1998, “Mechanical Properties of CRETE, a Polyurethane Foam,” J. Appl. Polym. Sci., 68, pp. 1045–1055.
Palissery, V., Taylor, M., and Browne, M. 2001, “Characterization of Static and Fatigue Behavior of a Polyurethane Foam Material to Model Cancellous Bone.” T149 Proceedings of the European Society for Biomaterials, 2001 Conference, London.
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Onck,  P. R., Andrews,  E. W., and Gibson,  L. J., 2001, “Size Effects in Ductile Cellular Solids. Part 1: Modeling,” International Journal of Mechanical Sciences, 43, pp. 681–699.
Gibson, I. J., Ashby, M. F., 1997, “The Mechanics of Foams: Basic Results.” In: Cellular Solids: Structure and Properties, CUP, Cambridge, pp. 175–234.
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Currey,  J. D., 1998, “Mechanical Properties of Vertebrate Hard Tissues,” Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine, 212, pp. 399–411.
Knauss,  P., 1981, “Materialkennwerte und Fesitgkeitsverhalten des spongiösen Knochengewebes am coxalen Human-Femur,” Biomedizinische Technik, 26, pp. 200–210.

Figures

Grahic Jump Location
Typical stress strain curves for all foam grades.
Grahic Jump Location
Typical torque rotation curves for all foam grades.
Grahic Jump Location
Normalized shear properties plotted against normalized density, logarithmic scale. “G/Es” is normalized shear modulus, “tau/sigma” is normalized maximum shear stress. Least-square linear trend lines also plotted.

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