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Micromechanics modeling of fracture in nanocrystalline metals
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Raju, I. S. Glaessgen, E. H. Piascik, R. S. Harris, C. E. |
| Copyright Year | 2002 |
| Description | Nanocrystalline metals have very high theoretical strength, but suffer from a lack of ductility and toughness. Therefore, it is critical to understand the mechanisms of deformation and fracture of these materials before their full potential can be achieved. Because classical fracture mechanics is based on the comparison of computed fracture parameters, such as stress intlmsity factors, to their empirically determined critical values, it does not adequately describe the fundamental physics of fracture required to predict the behavior of nanocrystalline metals. Thus, micromechanics-based techniques must be considered to quanti@ the physical processes of deformation and fracture within nanocrystalline metals. This paper discusses hndamental physicsbased modeling strategies that may be useful for the prediction Iof deformation, crack formation and crack growth within nanocrystalline metals. |
| File Size | 608145 |
| Page Count | 8 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20030067948 |
| Archival Resource Key | ark:/13960/t3wt3n11w |
| Language | English |
| Publisher Date | 2002-01-01 |
| Access Restriction | Open |
| Subject Keyword | Metals And Metallic Materials Toughness Fracture Mechanics Deformation Ductility Metals Mathematical Models Microstructure Crack Initiation Crack Propagation Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
