• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Asia-Pacific Symposium on Engineering Plasticity and Its Applications(AEPA 2004) pt.2; 20040922-26; Shanghai(CN) >New Experimental Technique for Material Instability Study
【24h】

New Experimental Technique for Material Instability Study

机译：材料不稳定性研究的新实验技术

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

The paper presents a new method applied to measure displacement fields using probability concept. Based on analysis of digital image sequences, we propose the formulation derived from the information of probability between subsets in the un-deformed image and deformed image. The quantity of this information between two subsets establishes a criterion of their mutual dependence based on the maximum a posteriori (MAP) estimate between them. So the subset in deformed image that maximizes the quantity is the corresponding subset of that in un-deformed image. After get the corresponding subset, we can obtain the integer pixel displacement. And we can get accurate displacement field using sub-pixel technique. In the experiments, the method is validated and the resulting solution can show accuracy to 0.02 pixels. This method was also applied successfully to determine the displacement fields of laminated composites under uniaxial compression. The elastic-plastic mechanical behavior and instability of the composites is studied.
机译：提出了一种利用概率概念测量位移场的新方法。在分析数字图像序列的基础上，我们提出了从未变形图像和变形图像中子集之间的概率信息得出的公式。基于两个子集之间的最大后验（MAP）估计，两个子集之间的此信息量建立了相互依赖的标准。因此，变形图像中使数量最大化的子集是未变形图像中对应的子集。得到相应的子集后，我们可以得到整数像素位移。利用亚像素技术可以获得准确的位移场。在实验中，该方法得到了验证，所得解决方案可以显示0.02像素的精度。该方法也成功地应用于确定层合复合材料在单轴压缩下的位移场。研究了复合材料的弹塑性力学行为和不稳定性。

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