Sort by Date
Sort by Title
Standard Format
Show Abstracts
As Citations (APA)
Search results
Jump to search filters
AIP Conference Proceedings
Alexander, Charles S. ; Chhabildas, L.C.; Templeton, D.W.
Soda-lime glass (SLG) is a highly available low cost glass formulation commonly used in window applications. Over the past decade, there have been a number of studies which have examined the Hugoniot elastic limit (HEL) of this material resulting in a wide range of values from 3.1 to 6.0 GPa. The determination of the HEL is complicated by many factors including ramp loading due to the convex downward curvature of the Hugoniot at low pressures. Results of transmitted wave profile experiments up to 20 GPa are presented and analyzed to determine the loading and release characteristics of SLG near the HEL. Results indicate a response that is more complex than the elastic - plastic response typical of many materials, possibly explaining the wide range in initially reported HEL values. © 2007 American Institute of Physics.
AIP Conference Proceedings
Furnish, Michael D.; Vogler, Tracy J. ; Alexander, Charles S. ; Reinhart, William D. ; Trott, Wayne M. ; Chhabildas, Lalit C.
Material heterogeneity appears to give rise to variability in the yield behavior of ceramics and metals under shock loading conditions. The line-imaging VISAR provides a way to measure this variability, which may then be quantified by Weibull statistics or other methods. Weibull methods assign a 2-parameter representation of failure phenomena and variability. We have conducted experiments with tantalum (25 and 40 μm grains) and silicon carbide (SiC-N with 5 μm grains). The tantalum HEL variability did not depend systematically on peak stress, grain size or sample thickness, although the previously observed precursor attenuation was present. SiC-N HEL variability within a single shot was approximately half that of single-point variability in a large family of shots; these results are more consistent with sample-to-sample variation than with variability due to changing shot parameters. © 2007 American Institute of Physics.
Alexander, Charles S. ; Reinhart, William D. ; Vogler, Tracy J.
Alexander, Charles S. ; Reinhart, William D. ; Vogler, Tracy J.
Furnish, Michael D. ; Vogler, Tracy J. ; Alexander, Charles S. ; Reinhart, William D. ; Trott, Wayne M.
Alexander, Charles S.
International Journal of Impact Engineering
Vogler, Tracy J. ; Trott, Wayne M. ; Reinhart, William D. ; Alexander, Charles S. ; Furnish, Michael D. ; Knudson, Marcus D. ; Chhabildas, L.C.
Alexander, Charles S. ; Thompson, Aidan P. ; Chhabildas, L.C. ; Furnish, Michael D. ; Dolan, Daniel H. ; Davis, Jean-Paul ; Lemke, Raymond W. ; Desjarlais, Michael P. ; Hertel, Eugene S.
Alexander, Charles S. ; Reinhart, William D. ; Vogler, Tracy J. ; Chhabildas, L.C.
Alexander, Charles S. ; Vogler, Tracy J. ; Reinhart, William D. ; Chhabildas, L.C.
Glass, in various formulations, may be useful as a transparent armor material. Fused quartz (SiO{sub 2}), modified with either B{sub 2}O{sub 3} (13 % wt.) or Na{sub 2}O (15 % wt.), was studied to determine the effect on the dynamic response of the material. Utilizing powder and two-stage light gas guns, plate impact experiments were conducted to determine the effect on strength properties, including the elastic limits and plastic deformation response. Further, the effect of glass modification on known transitions to higher density phases in fused quartz was evaluated. Results of these experiments will be presented and discussed.
Results 101–110 of 110
25 Results per page
50 Results per page
100 Results per page
200 Results per page
