Viscoelastic properties of bone as a function of hydration state determined by nanoindentation
- 21 November 2006
- journal article
- research article
- Published by Taylor & Francis in Philosophical Magazine
- Vol. 86 (33-35), 5691-5703
- https://doi.org/10.1080/14786430600660864
Abstract
Spherical indentation creep testing was used to examine the effect of hydration state on bone mechanical properties. Analysis of creep data was based on the elastic–viscoelastic correspondence principle and utilized a direct solution for the finite loading-rate experimental conditions. The zero-time shear modulus was computed from the creep compliance function and compared to the indentation modulus obtained via conventional indentation analysis, based on an elastic unloading response. The method was validated using a well-known polymer material under three different loading conditions. The method was applied to bone samples prepared with different water content by partial exchange with ethanol, where 70% ethanol was considered as the baseline condition. A hydration increase was associated with a 43% decrease in stiffness, while a hydration decrease resulted in a 20% increase in bone tissue stiffness.Keywords
This publication has 29 references indexed in Scilit:
- Relationships between initial unloading slope, contact depth, and mechanical properties for conical indentation in linear viscoelastic solidsJournal of Materials Research, 2005
- Nanomechanical properties and mineral concentration in articular calcified cartilage and subchondral boneJournal of Anatomy, 2003
- Load–displacement behavior during sharp indentation of viscous–elastic–plastic materialsJournal of Materials Research, 2003
- Investigation of creep behaviour under load during indentation experiments and its influence on hardness and modulus resultsSurface and Coatings Technology, 2001
- The hardness and modulus of elasticity of primary molar teeth:an ultra-micro-indentation studyJournal of Dentistry, 2000
- Elastic modulus and hardness of cortical and trabecular bone lamellae measured by nanoindentation in the human femurJournal of Biomechanics, 1999
- Nano-indentation of polymeric surfacesJournal of Physics D: Applied Physics, 1998
- Elastic properties of human cortical and trabecular lamellar bone measured by nanoindentationBiomaterials, 1997
- An improved technique for determining hardness and elastic modulus using load and displacement sensing indentation experimentsJournal of Materials Research, 1992
- A method for interpreting the data from depth-sensing indentation instrumentsJournal of Materials Research, 1986