Loading...
Please wait, while we are loading the content...
Similar Documents
Elevated temperature crack growth (Document No: 19870001781)
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Vanstone, R. H. Yau, J. F. Kim, K. S. Laflen, J. H. |
| Copyright Year | 1984 |
| Description | Critical gas turbine engine hot section components such as blades, vanes, and combustor liners tend to develop minute cracks during early stages of operations. The ability of currently available path-independent (P-I) integrals to correlate fatigue crack propagation under conditions that simulate the turbojet engine combustor liner environment was determined. To date, an appropriate specimen design and a crack displacement measurement method were determined. Alloy 718 was selected as the analog material based on its ability to simulate high temperature behavior at lower temperatures in order to facilitate experimental measurements. Available P-I integrals were reviewed and the best approaches are being programmed into a finite element post processor for eventual comparison with experimental data. The experimental data will include cyclic crack growth tests under thermomechanical conditions, and, additionally, thermal gradients. |
| File Size | 389253 |
| Page Count | 10 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19870001781 |
| Archival Resource Key | ark:/13960/t8sb8xd05 |
| Language | English |
| Publisher Date | 1984-10-01 |
| Access Restriction | Open |
| Subject Keyword | Structural Mechanics Finite Element Method Crack Tips Stress-strain Relationships Temperature Effects Fatigue Materials Gas Turbine Engines Mathematical Models Engine Parts Prediction Analysis Techniques 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 |
