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Rapid Vaporization of Thin Conductors Used for Impulse Metalworking

出版	Ohio State University, 2012
URL	http://books.google.com.hk/books?id=eNTpmAEACAAJ&hl=&source=gbs_api

註釋Applications including cutting, forming, axisymmetric joining and collision welding are demonstrated and discussed. From analysis of the data from these applications, it was seen that degree of confinement has a great effect on effective geometries of a vaporizing foil. With less confinement, thicker foils were found to be more efficient whereas thinner foils were found to be more effective for the applications which require less confinement pressure on the foil. Collision welding of a wide range of dissimilar metals was implemented and mechanical testing yielded a wide spectrum of results. Optical micrographs of the weld interfaces also showed a wide range of morphology. A device called linear perforator has been created to use the pressure created by vaporizing wire and detonation of a chemical augment surrounding it, to launch a 3.174 mm thick, 25.4 mm tall and 152.4 mm long steel projectile to velocities close to 400 m/s. This projectile is used to fully penetrate 12.7 mm thick artillery shells made of steel. Design of the linear perforator and latest results will be discussed.