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Thermal expansion behavior of ldef metal matrix composites
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Le, Tuyen D. Steckel, Gary L. |
| Copyright Year | 1993 |
| Description | The thermal expansion behavior of Long Duration Exposure Facility (LDEF) metal matrix composite materials was studied by (1) analyzing the flight data that was recorded on orbit to determine the effects of orbital time and heating/cooling rates on the performance of the composite materials, and (2) characterizing and comparing the thermal expansion behavior of post-flight LDEF and lab-control samples. The flight data revealed that structures in space are subjected to nonuniform temperature distributions, and thermal conductivity of a material is an important factor in establishing a uniform temperature distribution and avoiding thermal distortion. The flight and laboratory data showed that both Gr/Al and Gr/Mg composites were stabilized after prolonged thermal cycling on orbit. However, Gr/Al composites showed more stable thermal expansion behavior than Gr/Mg composites and offer advantages for space structures particularly where very tight thermal stability requirements in addition to high material performance must be met. |
| File Size | 959985 |
| Page Count | 24 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19930019080 |
| Archival Resource Key | ark:/13960/t73v4gx91 |
| Language | English |
| Publisher Date | 1993-04-01 |
| Access Restriction | Open |
| Subject Keyword | Composite Materials Temperature Distribution Thermal Expansion Time Dependence Thermal Cycling Tests Metal Matrix Composites Thermal Conductivity Spacecraft Structures Long Duration Exposure Facility Thermal Stability Large Space Structures Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
