F122 液体およびゲル状物質用の衝撃圧力センサー

概要

論文の詳細を見る
A new optical shock pressure sensor is proposed to detect the shock wave front in liquid or gel specimens sensitively. The present method is based on the larger pressure dependence of the refractive index for the liquid and gel specimens in comparison with that for glass prism. The condition of total internal reflection of an incident laser beam onto the specimen-glass boundary is violated if the refractive index changes instantaneously by shock compression. Target assembly of the present sensor was designed for gas gun experiments based on the above concept. Several shock experiments were performed on water, NaCl aqueous solution, and gelatin gel specimens in the relatively low pressure range of ≤ 1 GPa. It is found that the present sensor is very effective for the sensitive detection of shock front in these specimens and is suitable for the measurement of the precise shock Hugoniot compression curve for these specimens in the relatively low pressure region.
日本流体力学会の論文
2002-07-23