撮影画像を用いたひずみ分布計測法に関する研究 : 高ひずみ条件下における計測精度及び疲労亀裂発生位置の推定に関する実験検証

概要

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It is extremely important to measure the strength of structures for the inspection of their reliability. Although the measuring of strain using strain gauges is very useful for locating various problems of strength, the strain gauges can measure strains only at points where they are attached. Therefore, the strain gauges are not suited to the measurement of strain distribution at cross sections of structures. On the other hand, it has been reported that the sub-pixel digital image correlation (Sub-DIC) method can measure the strain distribution at cross sections of structures using a high performance digital camera. In this paper we discussed the accuracy under a high strain environment and the localization of fatigue cracks in order to evaluate the efficacy of the Sub-DIC method. The results obtained by the Sub-DIC method were compared with those by the finite element method and the tensile tests. The efficacy of the Sub-DIC method was confirmed.
社団法人精密工学会の論文
2009-03-05