高速破壊現象の高解像撮影を目的としたレンズアシスティッド・パルスホログラフィー顕微鏡法

概要

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A method of lens-assisted holographic microscopy with high spatial resolution has been developed for taking microscopic photographs of rapidly propagating cracks, the speed of which is 200-600m/s or more. The spatial resolution is more than 350 lines/mm, which is about three times as high as those of previous methods of pulsed holographic microscopy utilized in studies of dynamic fracture. One can apply the method to rapidly propagating cracks in PMMA, take microscopic photographs of them and, measure craze opening displacements which are less than 10 microns, the measurement of which has been difficult so far. The method will also be applicable to measuring the opening displacements of rapidly propagating cracks in ceramics, the displacements of which are about 10 microns or less.
一般社団法人日本機械学会の論文
1996-11-25