Structural orientation dependent sub-lamellar bone mechanics
Jimenez-Palomar, I, Shipov, A, Shahar, R and Barber, AH (2015). Structural orientation dependent sub-lamellar bone mechanics. Journal of the Mechanical Behavior of Biomedical Materials. 52, pp. 63-71.
|Authors||Jimenez-Palomar, I, Shipov, A, Shahar, R and Barber, AH|
The lamellar unit is a critical component in defining the overall mechanical properties of bone. In this paper, micro-beams of bone with dimensions comparable to the lamellar unit were fabricated using focused ion beam (FIB) microscopy and mechanically tested in bending to failure using atomic force microscopy (AFM). A variation in the mechanical properties, including elastic modulus, strength and work to fracture of the micro-beams was observed and related to the collagen fibril orientation inferred from back-scattered scanning electron microscopy (SEM) imaging. Established mechanical models were further applied to describe the relationship between collagen fibril orientation and mechanical behaviour of the lamellar unit. Our results highlight the ability to measure mechanical properties of discrete bone volumes directly and correlate with structural orientation of collagen fibrils.
|Keywords||0903 Biomedical Engineering; 0912 Materials Engineering; 0913 Mechanical Engineering; Biomedical Engineering|
|Journal||Journal of the Mechanical Behavior of Biomedical Materials|
|Journal citation||52, pp. 63-71|
|Digital Object Identifier (DOI)||doi:10.1016/j.jmbbm.2015.02.031|
|09 Mar 2015|
|Publication process dates|
|Deposited||21 Aug 2018|
|Accepted||28 Feb 2015|
|Accepted author manuscript|
CC BY-NC-ND 4.0
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