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The relationship between observed fatigue damage and life estimation models
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Kurath, Peter Socie, Darrell F. |
| Copyright Year | 1988 |
| Description | Observations of the surface of laboratory specimens subjected to axial and torsional fatigue loadings has resulted in the identification of three damage fatigue phenomena: crack nucleation, shear crack growth, and tensile crack growth. Material, microstructure, state of stress/strain, and loading amplitude all influence which of the three types of fatigue damage occurs during a dominant fatigue life fraction. Fatigue damage maps are employed to summarize the experimental observations. Appropriate bulk stress/strain damage parameters are suggested to model fatigue damage for the dominant fatigue life fraction. Extension of the damage map concept to more complex loadings is presented. |
| File Size | 1447189 |
| Page Count | 44 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19880018227 |
| Archival Resource Key | ark:/13960/t8hf2qv56 |
| Language | English |
| Publisher Date | 1988-08-01 |
| Access Restriction | Open |
| Subject Keyword | Structural Mechanics Fatigue Life Torsional Stress Life Durability Surface Properties Models Damage Microstructure Tensile Creep Crack Initiation Axial Strain 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 |
