| タイトル | Fatigue behavior and life prediction of a SiC/Ti-24Al-11Nb composite under isothermal conditions |
| 本文（外部サイト） | http://hdl.handle.net/2060/19910021252 |
| 著者（英） | Bartolotta, Paul A. |
| 著者所属（英） | NASA Lewis Research Center |
| 発行日 | 1991-08-01 |
| 言語 | eng |
| 内容記述 | Metal Matrix Composites (MMC) and Intermetallic Matrix Composites (IMC) were identified as potential material candidates for advanced aerospace applications. They are especially attractive for high temperature applications which require a low density material that maintains its structural integrity at elevated temperatures. High temperature fatigue resistance plays an important role in determining the structural integrity of the material. This study attempts to examine the relevance of test techniques, failure criterion, and life prediction as they pertain to an IMC material, specifically, unidirectional SiC fiber reinforced titanium aluminide. A series of strain and load controlled fatigue tests were conducted on unidirectional SiC/Ti-24Al-11Nb composite at 425 and 815 C. Several damage mechanism regimes were identified by using a strain-based representation of the data, Talreja's fatigue life diagram concept. Results of these tests were then used to address issues of test control modes, definition of failure, and testing techniques. Finally, a strain-based life prediction method was proposed for an IMC under tensile cyclic loadings at elevated temperatures. |
| NASA分類 | STRUCTURAL MECHANICS |
| レポートNO | 91N30566
E-6459
NASA-TM-105168
NAS 1.15:105168 |
| 権利 | No Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/131114 |
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