A study on the mechanical properties of beagle femoral head using the digital speckle correlation method

Wang, Qinghua; Xie, Huimin; Tang, Peifu; Yao, Qi; Huang, Peng; Chen, Pengwan; Huang, Fenglei

doi:10.1016/j.medengphy.2009.07.021

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Volume 31, Issue 10 , Pages 1228-1234, December 2009

A study on the mechanical properties of beagle femoral head using the digital speckle correlation method

Qinghua Wang
- AML, Department of Engineering Mechanics, Tsinghua University, Beijing 100084, China
Huimin Xie
- AML, Department of Engineering Mechanics, Tsinghua University, Beijing 100084, China
- Corresponding author. Tel.: +86 10 62792286; fax: +86 10 62781824.
Peifu Tang
- Orthopedic, 301 Chinese PLA General Hospital, Beijing 100853, China
Qi Yao
- Orthopedic, Beijing Shijitan Hospital, Beijing 100038, China
Peng Huang
- Orthopedic, 301 Chinese PLA General Hospital, Beijing 100853, China
Pengwan Chen
- State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China
Fenglei Huang
- State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China

Received 4 January 2009; received in revised form 24 July 2009; accepted 29 July 2009. published online 27 August 2009.

Abstract

The mechanical properties of the femoral head are known to play an important role in the athletic performance of animals. In this paper, the full-field displacement and strain distributions of beagle femoral head samples in the U and V fields under loading were measured using the digital speckle correlation method (DSCM), and some deformation characteristics were analyzed. Young's modulus and Poisson's ratio were calculated to demonstrate the notable axial anisotropy of the femoral head. The axial compressive Young's modulus varies from 361MPa to 583MPa, and the transverse one is 213MPa. The Poisson's ratio in the axial–transverse direction ranges from 0.14 to 0.29, and the one in the transverse–axial direction is 0.07. Experimental results validated the accuracy of this measurement, providing a potential reference for investigating the deformation performance of the femoral head.