金属管内起爆による衝撃波増幅効果に関する研究

抄録

This paper reports experimental results of the amplification effect of shock wave by an explosion in a closed space for establishment of shock wave amplitude method related to the shock wave medical and biomedical application. In this study, a metal tube made of stainless steel (SUS304) was used as a closed space. The metal tube was placed partly under the water surface in a water-filled chamber. A shock wave was generated in the metal tube by detonating a micro-explosive (10 mg silver azide pellet) was placed about 5, 10, 15, 20 mm from the bottom of the tube. The process of underwater shock wave propagation from the tube was visualized optically by shadowgraph method and recorded by a high-speed framing camera. The pressure histories of generated shock wave were measured simultaneously by a spatiotemporal pressure sensor. The peak overpressure of induced underwater shock wave from a metal tube with a relatively large diameter was larger than that of shock wave by detonating in water open space.