琉球大学農学部生物生産学科・生産システム工学講座
Laboratory of Bioproduction Systems Engineering, Department of Biological Production, Faculty of Agriculture, University of the Ryukyus
琉球大学農学部生物生産学科・生産システム工学講座
Laboratory of Bioproduction Systems Engineering, Department of Biological Production, Faculty of Agriculture, University of the Ryukyus
A convenient system for analyzing the soil deformation beneath a wheel has been developed in this study. It consists of two subsystems to detect the displacement of soil particles and to calculate strain or strain increment. In order to detect the displacement of soil particles with high accuracy, small and movable markers made of polyester sheet are set on the inside wall (acrylic resin plate) of a soil bin, and a series of their photographs are taken in a traveling experiment of a wheel. The coordinates of markers are read and stored in a data file, strains or these increments are calculated by using the data file, and the distribution patterns of the strains are discussed. The results by two types of detecting devices, i.e., a digitizer and a coordinates detector were compared with each other. The analyzing system was applied to some results of traveling experiments, and it was shown that the system is able to analyze the soil deformation with sufficient accuracy.