登入
選單
返回
Google圖書搜尋
Exploring Pulse Shaping for Z Using Graded-density Impactors on Gas Guns (final Report for LDRD Project 79879).
William Dodd Reinhart
Tracy John Vogler
Marlin E. Kipp
Michael David Furnish
William W. Anderson
Rob Hixson
出版
United States. Department of Energy
, 2005
URL
http://books.google.com.hk/books?id=DrfQjwEACAAJ&hl=&source=gbs_api
註釋
While isentropic compression experiment (ICE) techniques have proved useful in deducing the high-pressure compressibility of a wide range of materials, they have encountered difficulties where large-volume phase transitions exist. The present study sought to apply graded-density impactor methods for producing isentropic loading to planar impact experiments to selected such problems. Cerium was chosen due to its 20% compression between 0.7 and 1.0 GPa. A model was constructed based on limited earlier dynamic data, and applied to the design of a suite of experiments. A capability for handling this material was installed. Two experiments were executed using shock/reload techniques with available samples, loading initially to near the gamma-alpha transition, then reloading. As well, two graded-density impactor experiments were conducted with alumina. A method for interpreting ICE data was developed and validated; this uses a wavelet construction for the ramp wave and includes corrections for the ''diffraction'' of wavelets by releases or reloads reflected from the sample/window interface. Alternate methods for constructing graded-density impactors are discussed.