デジタルカメラを用いたモアレ法によるインフラ構造物の損傷評価技術

抄録

To measure the deformation of the structural material, the Moire method has been used for the full-field deformation measurements. However, in this method, two (master and model) grids or gratings should be overlapped on the specimen. To avoid this problem, a Moiré method using digital camera has been applied. The model grid was fabricated on the structural material, and shooting by a digital camera. Using an image processing system, the Moiré fringe can be observed. Using this method, the deformation of the structural material such as strain distribution, displacement, and vibration of the structural material can be measured. The damage of the structural material can be estimated.