A model for predicting the damage and oxidation dependent life of SCS-6/Ti-B21S [0]4 metal matrix composite /
482[] C and 650[] C. The material was also oxidized at 700 C and
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| Format: | Thesis eBook |
| Language: | English |
| Published: |
[Place of publication not identified] :
[publisher not identified] ;
1997.
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| Subjects: | |
| Online Access: | Link to OAKTrust copy |
| Summary: | 482[] C and 650[] C. The material was also oxidized at 700 C and A method for predicting the life of an embrittled metal analysis. Considering cyclic fatigue, the effects of matrix and farther in an elastic analysis than in a viscoplastic and subsequent surface cracking, fiber/matrix debonding, at 482[]C and 650[]C for oxidized and unoxidized specimens. Considering monotonic data, surface cracks propagated sooner crack propagation was developed herein. The titanium metal fiber-bridging, and eventual fiber failure. Material identified were material inelasticity, surface embrittlement inclusion of cohesive zone elements. Surface embrittlement inelasticity was predicted using Bodner's unified matrix composite using the finite element method coupled with matrix composite, SCS-6/Ti[]21 S [0]4 was fatigue tested at models for material inelasticity, surface embrittlement, and on initial oxygen dissolution and its effect on the life of only 14 cycles were predicted. However, the fiber stress in performed on Ti-[]21S to correlate microstructural changes properties. Both monotonic and fatigue loadings were modeled shed load to the fiber. The strength of the fiber, and in stress. Due to the enormous computational time required, the material. The life limiting physical mechanisms the oxidized composite was significantly higher than in the the premature failure of the oxidized composite. then fatigued at 482[] C to failure. Oxidation studies were turn, composite is directly related to a critical fiber unoxidized composite. This difference apparently leads to viscoplastic model. Crack propagation was modeled via the viscoplasticity and surface cracking in oxidized specimens was accounted for through a degradation in mechanical with a loss in mechanical properties. The research focuses |
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| Item Description: | "Major subject: Aerospace Engineering". In title, numerals, subscripts, and Greek letter Beta used. Vita. |
| Physical Description: | viii, 123 leaves : illustrations ; 28 cm. Also available online. Issued also on microfiche from Lange Micrographics. |
| Bibliography: | Includes bibliographical references. |