Localized Impact Damage in Ceramics: Comparisons of Recent Experiments and Theoretical Calculations,
Abstract
The objective of the present investigation is to make a comprehensive experimental evaluation of a recent theory of elastic-plastic impact and to modify the theory to provide a more realistic description of the impact characteristics. Previous work has included investigation of subsonic localized impact damage in glass, ZnS, transformation toughened zirconia (TT-2rO2), and other ceramics. A major advantage of the theory is that it provides a means to predict the response of a material subjected to impact loading using contact characteristics determined by static loading tests. The assumption that the damage induced at a particular maximum static load is the same as that resulting from an equal maximum impact load has frequently been invoked or suggested. A recent report describes similarities and differences in damage induced by static and impact loading. A preliminary evaluation of the theory of elastic-plastic impact using limited data showed that the theory yields promising results. The present report describes certain modifications of the theory and a more complete evaluation of the theory based on more extensive data.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 1980
- Accession Number
- ADA096947
Entities
People
- H. P. Kirchner
- T. J. Larchuk