Shock compression and release in high-strength ceramics
A preliminary investigation of shock compression and release properties has been performed on four ceramics: silicon carbide, titanium diboride, boron carbide and zirconium dioxide. Eight planar impact experiments using thin discs of similar ceramic as impactor and target have been completed. The particle velocity history at the interface between the back of the target ceramic and a lithium fluoride window material was acquired with a laser velocity interferometer (VISAR). These wave profiles indicate that each of these materials responds in a unique way to shock loading. Peak impact stresses in these experiments range between 20 and 50 GPa, leading to pronounced permanent deformation behavior of these materials. Dynamic compression and release stress-strain behavior of the ceramics, formulated with numerical iteration methods, is compared with compressive strength properties determined from the experimental data. The current experiments provide data for these ceramic materials which can be used to evaluate computational material models in wave propagation codes. 23 refs., 25 figs., 4 tabs.
- Research Organization:
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- DOE Contract Number:
- AC04-76DP00789
- OSTI ID:
- 5777672
- Report Number(s):
- SAND-89-1461; ON: DE89013995
- Resource Relation:
- Other Information: Portions of this document are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
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42 ENGINEERING
BORON CARBIDES
MECHANICAL PROPERTIES
CERAMICS
MATERIALS TESTING
SILICON CARBIDES
TITANIUM BORIDES
ZIRCONIUM OXIDES
COMPRESSION
IMPACT SHOCK
INTERFACES
SHEAR
STRAINS
STRESS ANALYSIS
VELOCITY
WAVE PROPAGATION
YIELD STRENGTH
BORIDES
BORON COMPOUNDS
CARBIDES
CARBON COMPOUNDS
CHALCOGENIDES
OXIDES
OXYGEN COMPOUNDS
SILICON COMPOUNDS
TESTING
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
ZIRCONIUM COMPOUNDS
360203* - Ceramics
Cermets
& Refractories- Mechanical Properties
420500 - Engineering- Materials Testing