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Compressive strength of fiber reinforced composite materials. [composed of boron and epoxy
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Davis Jr., J. G. |
| Copyright Year | 1974 |
| Description | Results of an experimental and analytical investigation of the compressive strength of unidirectional boron-epoxy composite material are presented. Observation of fiber coordinates in a boron-epoxy composite indicates that the fibers contain initial curvature. Combined axial compression and torsion tests were conducted on boron-epoxy tubes, and it was shown that the shear modulus is a function of axial compressive stress. An analytical model which includes initial curvature in the fibers and permits an estimate of the effect of curvature on compressive strength is proposed. Two modes of failure which may result from the application of axial compressive stress are analyzed, delamination and shear instability. Based on tests and analysis, failure of boron-epoxy under axial compressive load is due to shear instability. |
| File Size | 1837949 |
| Page Count | 23 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19740022912 |
| Archival Resource Key | ark:/13960/t06x4495k |
| Language | English |
| Publisher Date | 1974-08-01 |
| Access Restriction | Open |
| Subject Keyword | Materials, Nonmetallic Shear Stress Compressive Strength Composite Materials Boron Compounds Reinforcing Fibers Epoxy Compounds Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
