• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文学位 >Micromechanical modeling of hydroxyapatite whisker reinforced polymer composites and cortical bone tissue.
【24h】

Micromechanical modeling of hydroxyapatite whisker reinforced polymer composites and cortical bone tissue.

机译：羟基磷灰石晶须增强聚合物复合材料和皮质骨组织的微力学建模。

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A new micromechanical model was developed to predict the elastic moduli of hydroxyapatite (HA) whisker reinforced polymer biocomposites based upon the elastic properties of each phase and the reinforcement volume fraction, morphology and preferred orientation. The effects of the HA whisker volume fraction, morphology and orientation distribution were investigated by comparing two and three-dimensional model predictions with experimentally measured elastic moduli or stiffness coefficients, respectively, for HA whisker reinforced high density polyethylene (HDPE) composites. Predictions using experimental measurements of the HA whisker aspect ratio distribution and orientation distribution were also compared to common idealized assumptions. The best model predictions were obtained using the experimentally measured HA whisker aspect ratio distribution and orientation distribution. The same micromechanical model developed and validated for HA whisker reinforced composites was also applied to the elastic properties of human cortical bone tissue. The orientation distribution of apatite crystals in bone was measured and statistically correlated to the elastic anisotropy of bone tissue. The relationship was further investigated using the micromechanical model. The orientation distribution of apatite crystals was shown to be a significant factor contributing to the elastic anisotropy of cortical bone tissue.
机译：开发了一种新的微力学模型，基于每个相的弹性特性以及增强体的体积分数，形态和优选取向，预测了羟基磷灰石（HA）晶须增强的聚合物生物复合材料的弹性模量。通过比较二维和三维模型预测值与HA晶须增强高密度聚乙烯（HDPE）复合材料分别通过实验测量的弹性模量或刚度系数，研究了HA晶须体积分数，形态和取向分布的影响。使用HA晶须纵横比分布和取向分布的实验测量结果进行的预测也与常见的理想假设进行了比较。使用实验测量的HA晶须长宽比分布和方向分布可获得最佳模型预测。为HA晶须增强的复合材料开发并验证的相同的微机械模型也应用于人类皮质骨组织的弹性性能。测量了磷灰石晶体在骨骼中的取向分布，并将其与骨骼组织的弹性各向异性统计相关。使用微机械模型进一步研究了这种关系。磷灰石晶体的取向分布是导致皮质骨组织弹性各向异性的重要因素。

著录项

  • 作者

    Yue, Weimin.;

  • 作者单位

    University of Notre Dame.;

  • 授予单位 University of Notre Dame.;
  • 学科 Engineering Biomedical.;Engineering Materials Science.;Engineering Mechanical.
  • 学位 Ph.D.
  • 年度 2006
  • 页码 114 p.
  • 总页数 114
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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