CRITICAL-APPRAISAL OF LIMITING STRAIN RATES FOR COMPRESSION TESTING OF CERAMICS IN A SPLIT HOPKINSON PRESSURE BAR

Authors
RAVICHANDRAN G SUBHASH G
Citation
G. Ravichandran et G. Subhash, CRITICAL-APPRAISAL OF LIMITING STRAIN RATES FOR COMPRESSION TESTING OF CERAMICS IN A SPLIT HOPKINSON PRESSURE BAR, Journal of the American Ceramic Society, 77(1), 1994, pp. 263-267
Citations number
16
Categorie Soggetti
Material Science, Ceramics
Journal title
Journal of the American Ceramic Society → ACNP
ISSN journal
00027820
Volume
77
Issue
1
Year of publication
1994
Pages
263 - 267
Database
ISI
SICI code
0002-7820(1994)77:1<263:COLSRF>2.0.ZU;2-W
Abstract
The split Hopkinson pressure bar (SHPB) is being widely used to determ ine the dynamic compressive strength of ceramics and ceramic composite s. However, extreme caution needs to be exercised while testing these high-strength ceramics at high strain rates. The highest strain rate a t which ceramics can be tested using an SHPB without violating the und erlying assumptions is found to be in the range of 2500-3000/s. It is also shown that at very high loading rates, dispersion in the transmit ted pulse can lead to discrepancies in measuring the dynamic failure s trength of ceramics.