一种用于测定人股骨皮质骨力学性能的中等加载速率技术。

An intermediate loading rate technique for the determination of mechanical properties of human femoral cortical bone.

作者信息

Raftopoulos D, Katsamanis E, Saul F, Liu W, Saddemi S

机构信息

Biomechanics Laboratory, University of Toledo, Ohio 43606.

出版信息

J Biomed Eng. 1993 Jan;15(1):60-6. doi: 10.1016/0141-5425(93)90095-g.

DOI:10.1016/0141-5425(93)90095-g

PMID:8419684

Abstract

An experimental method to evaluate the mechanical properties of human femoral cortical bone under an intermediate strain rate of 4 x 10(-2) s-1 is presented. The dynamic loading was developed by dropping weights from various heights; results were obtained for Young's modulus and Poisson's ratio when the specimens were loaded along the longitudinal axis of the femur. The results were compared with those under a slow strain rate of 2 x 10(-5) s-1 and a fast strain rate of 1 x 10(-2) s-1. It was found that Young's modulus for the intermediate strain rate is 10.5% higher than for the slow strain rate and 10% lower than for the fast strain rate. Poisson's ratio did not show any significant variation for the above three strain rates. The results were compared with those given previously by other investigators.

摘要

提出了一种评估人股骨皮质骨在4×10⁻² s⁻¹中间应变率下力学性能的实验方法。通过从不同高度落锤产生动态加载；当沿股骨纵轴加载标本时，获得了杨氏模量和泊松比的结果。将结果与在2×10⁻⁵ s⁻¹慢应变率和1×10⁻² s⁻¹快应变率下的结果进行了比较。发现中间应变率下的杨氏模量比慢应变率下高10.5%，比快应变率下低10%。泊松比在上述三种应变率下未显示出任何显著变化。将结果与其他研究者先前给出的结果进行了比较。