Residual Stress Distribution in the Bovine Femoral Diaphysis Measured by Synchrotron

Journal of Biomechanical Science and Engineering

Masahiro TODOH²  Shigeru TADANO²  Satoshi YAMADA¹  Kazuhiro FUJISAKI² 

[1] Division of Human Mechanical Systems and Design, Graduate School of Engineering, Hokkaido University;Division of Human Mechanical Systems and Design, Faculty of Engineering, Hokkaido University

关键词: Cortical Bone;    Residual Stress;    Synchrotron;    X-ray Diffraction;    Hydroxyapatite;   

DOI  :  10.1299/jbse.6.114

来源: Japan Society of Mechanical Engineers

【 摘 要 】

References(12)Cited-By(7)The presence of residual stresses in bone tissue has been noted, and the authors have reported that there are residual stresses in bone tissue. The tensile residual stresses in the bone axial direction on the cortical surface of the bovine femoral diaphyses were measured by X-ray diffraction method with characteristic Mo-Kα X-rays. However, then the residual stresses inside the cortical bone could not be accurately determined. The study here used synchrotron white X-rays obtained from the BL28B2 beam line at SPring-8 and was able to measure the residual stresses in the bovine femoral diaphysis in depth. The measurement positions in the diaphysis specimen were at 1 mm intervals from the outer surface to the inner surface of the specimen in four parts of the diaphysis: anterior, posterior, lateral, and medial. The results showed that the residual stresses in the bone axial direction at the outer cortical surface were tensile and the stresses in the inner positions of the cortical bone were compressive. In the anterior part, the residual stress at the surface was 24.7 MPa. From 2 mm to 10 mm depths inside the diaphysis, compressive residual stresses were measured and the average of these stresses was -9.0 MPa.

【 授权许可】

Unknown