Crack Nucleation Concept Study.
Abstract
A crack nucleation model presented in this paper is based on two principal ideas. First, there is a flaw distribution in the material which can be characterized as to size, orientation, type or other (perhaps unknown) critical parameter. Secondly, when the stress reaches a critical value given by a Griffith-type condition, the flaw under consideration begins to grow and is considered nucleated. This model has two implications: (1) applied stress, as well as inherent microstructure, should be taken into account in deriving nucleation rates, and (2) cracks are nucleated only on the rising portion of the stress wave. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1973
- Accession Number
- AD0772985
Entities
People
- William S. Derosset
Organizations
- Ballistic Research Laboratory