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Controlled crack growth specimen for brittle systems
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Calomino, Anthony M. Brewer, David N. |
| Copyright Year | 1990 |
| Description | A pure Mode 1 fracture specimen and test procedure has been developed which provides extended, stable, through-thickness crack growth in ceramics and other brittle, nonmetallic materials. Fixed displacement loading, applied at the crack mouth, promotes stable crack extension by reducing the stored elastic strain energy. Extremely fine control of applied displacements is achieved by utilizing the Poisson's expansion of a compressively loaded cylindrical pin. Stable cracks were successfully grown in soda-lime glass and monolithic Al2O3 for lengths in excess of 20 mm without uncontrollable catastrophic failure. |
| File Size | 6277533 |
| Page Count | 10 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19900014227 |
| Archival Resource Key | ark:/13960/t03z35f1w |
| Language | English |
| Publisher Date | 1990-05-01 |
| Access Restriction | Open |
| Subject Keyword | Nonmetallic Materials Stability Fracture Mechanics Glass Ceramics Brittleness Brittle Materials Displacement Crack Propagation Cracks Failure Analysis Cylindrical Bodies Pins Fracturing Aluminum Oxides Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
