Characterisation of time-dependent mechanical behaviour of trabecular bone samples

Twenty (n=20) untreated bovine trabecular bone cylindrical samples (without any chemical treatment) were scanned by suing uCT at high resolution (17.22 µm), before mechanical tests. The bone volume ratio (BV/TV) ranged from 15% to 54%. The provided uCT images can be used for the development of finite element models of the bone microstructure and for evaluating indices of bone microstructure (e.g. bone volume ratio, fabric tensors). Samples were subjected to compressive multiple-load-creep-unload-recovery experiments, the raw experimental data is provided for any possible further analysis. This innovative creep-recovery experiments at multiple load levels, which considered compression force equivalent to different strain levels (from 2000 με to 25000 με), investigated the time-dependent behaviour of trabecular bone in pre- and post-yield regimes. The detailed experiment methodology can be found from related thesis chapter and the cited journal papers.

在力学测试前，20个（n=20）未经处理的牛松质骨圆柱形样本（未进行任何化学处理）通过显微计算机断层扫描（micro-CT，uCT）以高分辨率（17.22 μm）完成扫描。骨体积分数（BV/TV）范围为15%至54%。提供的显微计算机断层扫描图像可用于构建骨微结构的有限元模型，以及评估骨微结构指标（如骨体积分数、织物张量（fabric tensors））。样本接受了压缩多载荷-蠕变-卸载-恢复实验，原始实验数据可供后续任意分析使用。该创新性多载荷水平蠕变-恢复实验考虑了等效于不同应变水平（2000 με至25000 με）的压缩力，研究了松质骨在屈服前和屈服后阶段的时间依赖性行为。详细实验方法可查阅相关学位论文章节及引用的期刊论文。