519 氷粒子の高速衝突現象に関する実験的研究(OS4-4 流体における新技術開発-4)(OS4 流体における新技術開発)

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This report describes a fundamental study on high-speed impact phenomena of an ice sphere and ice particles using a low-temperature shock tube. A shock sensor was made using PVDF (polyvinylidene fluoride) film with piezoelectric characteristics, for measurement of impact forces of solid particles. The responses of the PVDF shock sensor to shock waves were investigated. Impact forces caused by a plastic, an ice sphere, and ice particles were measured using the sensor and a load cell. High-speed impact phenomena of the spheres and particles were visualized by shadowgraph method. It was shown that an output of 0.1 V of the sensor corresponds to an impact force of 260N, and that the impact force of ice spheres having a diameter of 9mm is about 1.7 times larger than that of ice spheres having a diameter of 6mm.
一般社団法人日本機械学会の論文
2001-09-25