Failure Wave in DEDF and Soda-Lime Glass during Rod Impact

Journal Article · Fri Jul 28 04:00:00 EDT 2006 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2263584· OSTI ID:20875704

Orphal, D L ^[1]; Behner, Th; Hohler, V ^[2]; Anderson, Jr, C E ^[3]; Templeton, D W ^[4]

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1. International Research Associates, Inc., 4450 Black Avenue, Pleasanton, CA 94566 (United States)
2. Fraunhofer Institut fuer Kurzzeitdynamik (Ernst-Mach Institut), Eckerstr. 4, 79104 Freiburg (Germany)
3. Southwest Research Institute, 6220 Culebra Road, San Antonio, TX 78228-0510 (United States)
4. U. S. Army RDECOM-TACOM, AMST-TR-R, Warren, MI 48397 (United States)

Investigations of glass by planar, and classical and symmetric Taylor impact experiments reveal that failure wave velocity vF depends on impact velocity, geometry, and type of glass. vF typically increases with impact velocity vP to between cS and cL or to {radical}2cS (shear and longitudinal wave velocity). This paper reports initial results of an investigation of failure waves associated with gold rod impact on high-density (DEDF) glass and soda-lime glass. Data are obtained by visualizing simultaneously the failure propagation in the glass with a high-speed camera and the rod penetration velocity u with flash radiography. Results for DEDF glass are reported for vP between 1.2 and 2.0 km/s, those for soda-lime glass with vP {approx_equal}1.3 km/s. It is shown that vF > u, and that in the case of DEDF glass vF/u decreases from ; 1.38 to 1.13 with increasing vp. In addition, several Taylor tests were performed. For both DEDF and soda-lime glass the vF-values, found here as well as vF- data reported in the literature, reveal that--for equal pressures--the failure wave velocities determined from Taylor tests or planar-impact tests are distinctly greater than those observed during steady-state rod penetration.

• OSTI ID: 20875704
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 845; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CAMERAS
DENSITY
FAILURES
GEOMETRY
GLASS
GOLD
IMPACT TESTS
RODS
SHEAR
STEADY-STATE CONDITIONS
VELOCITY