首页> 外文会议>International Conference on Advanced Nondestructive Evaluation >Detecting and Tracking Changes of Morphologies and Mechanical Characteristics in the Lumbar Vertebrae of OVX rats using RP Technique and Micro-FE method
【24h】

Detecting and Tracking Changes of Morphologies and Mechanical Characteristics in the Lumbar Vertebrae of OVX rats using RP Technique and Micro-FE method

机译:RP技术检测和跟踪OVX大鼠腰椎的形态和机械特性的变化

获取原文

摘要

In the present study, changes of morphologies and mechanical characteristics in the lumbar vertebrae of the ovariectomised (OVX) rats were investigated and analyzed by Finite Element (FE) and Rapid-Prototyped (RP) models based on micro-computed tomography (micro-CT). In previous researches, there were many studies about morphology such as bone mineral density and trabecular microstructure. However, detecting and tracking local changes were few in the trabecular and cortical bone of the lumbar vertebrae for the OVX rats. Experimental and simulated studies were used to investigate mechanical characteristics of the lumbar vertebral bones for the OVX rats. Three dimensional (3D) geometries of the models (RP and FE models), generated from in-vivo micro-CT scan data, were obtained from the 4th lumbar of the OVX rats. Three specimens (whole vertebral, trabecular and cortical bone models) were generated and analyzed in the simulated compression tests. For further verification, the experimental compression test for RP models 'instead of real bone specimens' was performed to indirectly validate the results of the simulated compression test for the FE models. The results were similar to those of the compression test simulated by micro-FE analysis. The present study showed the efficiency of the combined method (FE and RP techniques based on in-vivo micro-CT) as a nondestructive evaluation.
机译:在本研究中,通过基于微计算机断层扫描的有限元(Fe)和快速原型(RP)模型来研究和分析卵巢切除(OVX)大鼠腰椎的形态和机械特性的变化(Micro-CT )。在以前的研究中,关于诸如骨矿物密度和小梁微观结构等形态学的研究。然而,检测和跟踪局部变化少于腰部椎骨的垂直和皮质骨中的肝脏骨。实验性和模拟研究用于研究腰椎骨骨骼的机械特性OVX大鼠。从VIVO微型CT扫描数据产生的模型(RP和FE模型)的三维(3D)几何图是从OVX大鼠的第4腰椎获得的。在模拟压缩试验中产生并分析了三种标本(整个椎骨,小梁和皮质骨模型)。为了进一步验证,进行RP模型'代替真实骨标本'的实验压缩测试以间接验证FE模型的模拟压缩测试的结果。结果与通过微FE分析模拟的压缩试验的结果类似。本研究表明,作为非破坏性评估的组合方法(基于体内微型CT的FE和RP技术)的效率。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号