Type
Text
Type
Thesis
Advisor
Tonge, Peter J. | Chad Korach | Toshio Nakamura | Oscar Lopez-Pamies | Mark Wolff.
Date
2010-12-01
Keywords
Engineering
Department
Department of Mechanical Engineering
Language
en_US
Source
This work is sponsored by the Stony Brook University Graduate School in compliance with the requirements for completion of degree.
Identifier
http://hdl.handle.net/11401/72597
Publisher
The Graduate School, Stony Brook University: Stony Brook, NY.
Format
application/pdf
Abstract
Researchers have reported diverse mechanical properties (Young's modulus) of human tooth enamel from experiments and finite element simulations, because of the complicated microstructure, which contains variations in crystal orientations and non-homogeneous properties. Although past models have effectively considered the microstructural effects, appropriate conditions for introducing crystal orientations within enamel rods and the property variations between rods and the interrod enamel are still necessary.In this thesis, the micromechanical response of the enamel microstructure is investigated using a periodic finite element model to determine the effective monoclinic mechanical properties and determine localized effects of microstructure on the stress field. A spherical micro-indentation test was conducted on the bulk enamel model and the effective homogeneous model. The difference in response to indentation loading between the heterogeneous and homogeneous models revealed changes related to the enamel microstructure.The model can be used to consider changes in effective properties of enamel based on microstructural variations, which can be applied to restorative materials attached or embedded within enamel. The study of the influence of microstructure on the damage generation and failure modes of enamel can also be accomplished using the model, which may be due to fractures and the abrasion-erosion wear process.
Recommended Citation
Lu, Cunyou, "Determination of the Monoclinic Properties of Human Tooth Enamel Microstructure by a Periodic Three Dimensional Finite Element Model" (2010). Stony Brook Theses and Dissertations Collection, 2006-2020 (closed to submissions). 1801.
https://commons.library.stonybrook.edu/stony-brook-theses-and-dissertations-collection/1801