A model whose porosity does not vary with compression depth is developed for evaluating the mechanical properties of dentin tubules with various orientation angles from micro-pillar nanocompression tests. Experimental results for a range of loading rates indicate that the yielding parameters and the elastic modulus are little affected by the creep behavior. For a given compression depth, the hardness, elastic modulus, and yielding strength decrease with increasing orientation angle of dentin. The mechanical properties obtained using the proposed model are consistent with the reported data, and are actually more precise since they consider the orientation angle. The proposed testing method can be applied to materials that yield a negative value of the elastic modulus due to creep behavior.
|頁（從 - 到）||1-8|
|期刊||Journal of the Mechanical Behavior of Biomedical Materials|
|出版狀態||Published - 2012 八月|
All Science Journal Classification (ASJC) codes
- Biomedical Engineering
- Mechanics of Materials