Plate impact experiments on DC745U cooled to ~ -60 ?��C

Gustavsen, Richard L.¹  Dattelbaum, Dana M.¹  Bartram, Brian Douglas¹  Gibson, Lloyd Lee¹  Jones, Justin Daniel¹  Goodbody, Austin Bernard¹ 

[1] Los Alamos National Lab. (LANL), Los Alamos, NM (United States). Shock and Detonation Physics

关键词: plate impact;    Hugoniot;    magnetic gauging;    silicone elastomers;   

DOI  :  10.2172/1304808
RP-ID  :  LA-UR--16-26360
PID  :  OSTI ID: 1304808

学科分类：材料科学（综合）

美国|英语

来源: SciTech Connect

【 摘 要 】

Using gas-gun driven plate impact experiments, we have measured the U_S - u_p Hugoniot of the silicone elastomer DC745U cooled to -60 ?��C. In summary, the initial density changes from p₀ (23?��C) = 1.312 ?? 0.010 g/cm³ to p₀ (-60?��C) = 1.447 ?? 0.011 g/cm³. The linear U_S - u_p Hugoniot changes from U_S = 1.62 + 1.74u_p km/s at +23?��C, to U_S = 2.03 ?? 0.06 + (2.03 ?? 0.06) u_p km/s at -60?��C. DC745U, therefore is much stiffer at -60?��C than at +23?��C, probably due to the crystallization that occurs at ~ -50?��C. Caveats/deficiencies: 1) This report does not provide an adequate pedigree of the DC745U used. 2) References to unpublished room temperature shock compression data on the elastomer are inadequate. 3) The report has not been fact checked by a DC745 subject matter expert.