High-energy synchrotron x-ray diffraction (XRD) has been used to quantify load transfer in bovine plexiform bone. By using both wide-angle and small-angle XRD, strains in the mineral as well as the collagen phase of bone were measured as a function of applied compressive stress. We suggest that a greater proportion of the load is borne by the more mineralized woven bone than the lamellar bone as the applied stress increases. With a further increase in stress, load is shed back to the lamellar regions until macroscopic failure occurs. The reported data fit well with reported mechanisms of microdamage accumulation in bovine plexiform bone.
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One of the authors (R. Akhtar) thanks Huijie Leng (University of Texas) for helpful communications and Engineering and Physical Sciences Research Council (EPSRC) for funding. Use of the Advanced Photon Source was supported by the United States Department of Energy, Office of Science, Office of Basic Energy Sciences, under Contract No. DE-AC02-06CH11357.
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Akhtar, R., Daymond, M., Almer, J. et al. Load transfer in bovine plexiform bone determined by synchrotron x-ray diffraction. Journal of Materials Research 23, 543–550 (2008). https://doi.org/10.1557/JMR.2008.0068