Mechanical properties of degraded PMR-15 resin
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, February 1999.
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| Format: | Thesis |
| Language: | eng |
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Massachusetts Institute of Technology
2005
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| Online Access: | http://hdl.handle.net/1721.1/9729 |
| _version_ | 1811083496321449984 |
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| author | Tsuji, Luis C. (Luis Christophe), 1974- |
| author2 | Hugh L. McManus. |
| author_facet | Hugh L. McManus. Tsuji, Luis C. (Luis Christophe), 1974- |
| author_sort | Tsuji, Luis C. (Luis Christophe), 1974- |
| collection | MIT |
| description | Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, February 1999. |
| first_indexed | 2024-09-23T12:33:59Z |
| format | Thesis |
| id | mit-1721.1/9729 |
| institution | Massachusetts Institute of Technology |
| language | eng |
| last_indexed | 2024-09-23T12:33:59Z |
| publishDate | 2005 |
| publisher | Massachusetts Institute of Technology |
| record_format | dspace |
| spelling | mit-1721.1/97292020-07-07T19:34:41Z Mechanical properties of degraded PMR-15 resin Tsuji, Luis C. (Luis Christophe), 1974- Hugh L. McManus. Massachusetts Institute of Technology. Department of Aeronautics and Astronautics Aeronautics and Astronautics Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, February 1999. Includes bibliographical references (leaves 50-52). Thermo-oxidative aging produces a non-uniform degradation state in PMR-15 resin. A surface layer, usually attributed to oxidative degradation, forms. This surface layer has different properties from the inner material. A set of material tests was designed to separate the properties of the oxidized surface layer from the properties of interior material. Test specimens were aged at 316°C in either air or nitrogen, for durations of up to 800 hours. The thickness of the oxidized surface layer in air aged specimens, and the shrinkage and coefficient of thermal expansion (CTE) of nitrogen aged specimens were measured directly. The nitrogen-aged specimens were assumed to have the same properties as the interior material in the air-aged specimens. Four-point-bend tests were performed to determine modulus of both the oxidized surface layer and the interior material. Bimaterial strip specimens consisting of oxidized surface material and unoxidized interior material were constructed and used to determine surface layer shrinkage and CTE. Results confirm that the surface layer and core materials have substantially different properties. by Luis C. Tsuji. S.M. 2005-08-19T19:46:12Z 2005-08-19T19:46:12Z 1998 1999 Thesis http://hdl.handle.net/1721.1/9729 42696279 eng M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission. http://dspace.mit.edu/handle/1721.1/7582 72 leaves 4726230 bytes 4725991 bytes application/pdf application/pdf application/pdf Massachusetts Institute of Technology |
| spellingShingle | Aeronautics and Astronautics Tsuji, Luis C. (Luis Christophe), 1974- Mechanical properties of degraded PMR-15 resin |
| title | Mechanical properties of degraded PMR-15 resin |
| title_full | Mechanical properties of degraded PMR-15 resin |
| title_fullStr | Mechanical properties of degraded PMR-15 resin |
| title_full_unstemmed | Mechanical properties of degraded PMR-15 resin |
| title_short | Mechanical properties of degraded PMR-15 resin |
| title_sort | mechanical properties of degraded pmr 15 resin |
| topic | Aeronautics and Astronautics |
| url | http://hdl.handle.net/1721.1/9729 |
| work_keys_str_mv | AT tsujiluiscluischristophe1974 mechanicalpropertiesofdegradedpmr15resin |