Fracture in Compression of Brittle Solids
Abstract
The feature of brittle solids in monotonic compression is reviewed from both the mechanistic and phenomenological points of view. The fundamental theoretical developments based on the extension of pre-existing cracks in general multi-axial stress fields are recognized as explaining extrinsic behavior where a single crack is responsible for the final failure. In contrast, shear faulting in compression is recognized to be the result of an evolutionary localization process involving en echelon action of cracks and is termed intrinsic. The mechanistic models are related to the phenomenological developments in dilatational plasticity that have been applied widely in concrete technology. The state of understanding of fracture in compression in rocks, concrete, cemented carbides, ultra-high-strength steels, and fiber- reinforced composites is reviewed in some detail, both from the point of view of fundamentals as well as technological applications. Experimental verification of models is discussed, and possibilities for nondestructive detection of extrinsic flaws and for monitoring damage evolution by acoustic emission are enumerated and evaluated.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1983
- Accession Number
- ADA132370