J1102-1-5 生体組織内チタンインプラントのX線ひずみ測定(ライフサポート1:生体計測)

概要

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An X-ray diffraction technique can be used to measure the strain of Titanium (Ti) materials. In this study, the X-ray diffraction method was applied to the skin tissue covered Ti materials. Characteristic X-rays of Mo-Ka were used in this method and the diffracted X-rays from Ti could be detected transmit through the skin tissue with 1 mm thickness. The individual peaks such as (010), (002), (011) and (110) were clearly recognized by using parallel beam setup. The X-ray absorption by skin tissue is to be large under the diffracted X-rays detected in low angles because the length of penetration path depends on the inclined angle equal to Bragg angle. The incident and diffracted X-rays were traveled for 8.6 mm in the tissue calculated under Bragg angle of 13.5 deg for diffraction from (110) lattice planes. The strain measurements were conducted under the bending load applied to Ti specimen of 30×10×2 mm in size. The strain of (110) lattice planes could be measured even the Ti specimen was located under the skin tissue. The strains were almost same values with or without the tissue covered.
社団法人日本機械学会の論文
2009-09-12