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Biaxial fatigue loading of notched composites
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Walrath, D. E. Francis, P. H. Weed, D. N. Sims, D. F. |
| Copyright Year | 1977 |
| Description | Thin walled, 2.54-cm (1-in.) diameter tubular specimens of T300/934 graphite/epoxy were fabricated and fatigue cycled in combinations of axial, torsional, and internal pressure loading. Two different four-ply layup configurations were tested: (0/90)S and (+ or - 45)S; all tubes contained a 0.48-cm (3/16-in.) diameter circular hole penetrating one wall midway along the tube length. S-N curves were developed to characterize fatigue behavior under pure axial, torsional, or internal pressure loading, as well as combined loading fatigue. A theory was developed based on the Hill plane stress model which enabled the S-N curve for combined stress states to be predicted from the S-N data for the uniaxial loading modes. Correlation of the theory with the experimental data proved to be remarkably good. |
| File Size | 8658023 |
| Page Count | 101 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19770019297 |
| Archival Resource Key | ark:/13960/t7vm91z40 |
| Language | English |
| Publisher Date | 1977-06-24 |
| Access Restriction | Open |
| Subject Keyword | Composite Materials Notch Strength Plane Stress Fatigue Materials Epoxy Compounds Graphite Loads Forces 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 |
