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Thermal degradation of the tensile strength of unidirectional boron/aluminum composites
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Lad, R. A. Grimes, H. H. Maisel, J. E. |
| Copyright Year | 1977 |
| Description | The variation of ultimate tensile strength with thermal treatment of B-Al composite materials and of boron fibers chemically removed from these composites in an attempt to determine the mechanism of the resulting strength degradation was studied. Findings indicate that thermally cycling B-Al represents a more severe condition than equivalent time at temperature. Degradation of composite tensile strength from about 1.3 GN/m squared to as low as 0.34 GN/m squared was observed after 3,000 cycles to 420 C for 203 micrometers B-1100 Al composite. In general, the 1100 Al matrix composites degraded somewhat more than the 6061 matrix material studied. Measurement of fiber strengths confirmed a composite strength loss due to the degradation of fiber strength. Microscopy indicated a highly flawed fiber surface. |
| File Size | 2000203 |
| Page Count | 24 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19770016265 |
| Archival Resource Key | ark:/13960/t9v16tq9b |
| Language | English |
| Publisher Date | 1977-01-01 |
| Access Restriction | Open |
| Subject Keyword | Composite Materials Boron Fiber Strength Aluminum Temperature Effects Surface Properties Metal Matrix Composites Boron Reinforced Materials Tensile Strength Thermal Degradation Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
