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Bolt-bearing fatigue of a graphite/epoxy laminate
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Crews Jr., J. H. |
| Copyright Year | 1980 |
| Description | Graphite/epoxy laminates were tested under bolt-bearing loads for a range of bolt clampup torques and for several test conditions involving water. High clampup torque improved both the static strength and fatigue limit by about 100 percent compared to a simple pin-bearing case, which had no through-the-thickness constraint. The static strength improvement was explained in terms of failure modes. Bolt clampup also influenced the hole elongation that developed before failure. For both the static and fatigue tests, the hole elongations were much larger for the low-torque clampup. Tests in water degraded static bearing strength only slightly, but reduced the fatigue limit about 40 percent below that for tests conducted in air. |
| File Size | 774950 |
| Page Count | 30 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19800020242 |
| Archival Resource Key | ark:/13960/t4vj0bv7w |
| Language | English |
| Publisher Date | 1980-07-01 |
| Access Restriction | Open |
| Subject Keyword | Structural Mechanics Fatigue Tests Torque Torsional Stress Composite Materials Hole Distribution Mechanics Stress Distribution Epoxy Resins Graphite Bolts Coatings Static Tests Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
