1999 Fiscal Year Final Research Report Summary
Evaluation of Interfacial Strength Between SiC Coating and C/C Composite
| Project/Area Number |
09555202
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 展開研究 |
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| Research Field |
Composite materials/Physical properties
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| Research Institution | The Institute of Space and Astronautical Science |
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Principal Investigator |
HATTA Hiroshi The Institute of Space and Astronautical Science Professor, 宇宙推進研究系, 教授 (90095638)
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| Co-Investigator(Kenkyū-buntansha) |
SUEMASU Hiroshi Sophia University Professor, 工学部, 教授 (20134661)
KOGO Yasuo Science University of Tokyo Associate Professor, 基礎工学部, 助教授 (60249935)
GOTO Ken The Institute of Space and Astronautical Science Research Associate, 宇宙推進研究系, 助手 (40300701)
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| Project Period (FY) |
1997 – 1999
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| Keywords | C / C Composites / SiC Coating / Interfacial Strength / Energy release Rate / Shear Stress / Plunger Method / エネルギー開放率 / 有限要素解析 |
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| Research Abstract |
Carbon fiber-reinforced carbon matrix composites (C/Cs) are usually used with an anti-oxidation coating. For this coating, high strength bonding to the C/C substrate is often required. However no measures to determine bonding strength for thin and brittle coatings has been established. In the present paper, a criterion for interfacial fracture of a SiC coating on a C/C substrate was at first discussed on the basis of fracture loads measured by a specially designed plunger method. The fracture mechanics approach was shown to be successful to predict the interfacial fracture. Then a parametric study was carried out to understand the effect of various parameters on the interfacial fracture loads.
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