Loading...
Please wait, while we are loading the content...
Similar Documents
Advances in fatigue life prediction methodology for metallic materials
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Newman Jr., J. C. |
| Copyright Year | 1992 |
| Description | The capabilities of a plasticity-induced crack-closure model to predict small- and large-crack growth rates, and in some cases total fatigue life, for four aluminum alloys and three titanium alloys under constant-amplitude, variable-amplitude, and spectrum loading are described. Equations to calculate a cyclic-plastic-zone corrected effective stress-intensity factor range from a cyclic J-integral and crack-closure analysis of large cracks were reviewed. The effective stress-intensity factor range against crack growth rate relations were used in the closure model to predict small- and large-crack growth under variable-amplitude and spectrum loading. Using the closure model and microstructural features, a total fatigue life prediction method is demonstrated for three aluminum alloys under various load histories. |
| File Size | 1523806 |
| Page Count | 48 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19920024947 |
| Archival Resource Key | ark:/13960/t9n34rz49 |
| Language | English |
| Publisher Date | 1992-08-01 |
| Access Restriction | Open |
| Subject Keyword | Structural Mechanics Stress Concentration J Integral Titanium Alloys Fatigue Life Cracks Stress Intensity Factors Aluminum Alloys Microstructure Prediction Analysis Techniques Crack Closure Loads Forces 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 | Technical Report |
