Image Processing Technique for Micro-deformation Mechanism of Soils by Ultra Small Shear Box Test Apparatus

本研究的目的是利用作者新引入扫描电镜的超小型剪切箱试验仪（USSBT），发展微观变形机理的图像处理技术。USSBT的作用机理与直剪试验相似。土的动剪切变形是建立土的本构方程的重要内容。采用未扰动洪积粘土、水泥稳定软粘土和焚烧灰进行USSBT，通过扫描电镜观察了它们的微剪切变形特征。应力-应变的宏观数据用X-Y绘图仪表示，颗粒行为的微观数据存储在VTR中。利用录影对颗粒的动态运动进行了分析。重点研究了宏观变形与微观颗粒运动之间的关系。该系统的图像处理显示了它的实用性。

The aim of this research is to develop the image processing technique of micro-deformation mechanism by an ultra small shear box test (abbreviated as USSBT) apparatus, which was newly introduced into a scanning electron microscope (abbreviated as SEM) by the author. The mechanism of USSBT is similar with a direct shear test.The dynamic shear deformation of soils is very important to establish the constitutive equation of soils. The undisturbed diluvial clays, cement stabilized soft clays and incinerated ashes were used for USSBT, and their micro-shear deformation characteristics were observed by SEM. The macroscopic data of stress-strain were illustrated by a X-Y plotter and the microscopic data of particle behavior were stored in VTR. The dynamic movement of particles was analyzed from the recorded VTR film. It is focusing that the relation between the macroscopic deformation and microscopic particle movement was examined. This system of the image processing reveals its practical applicability.