1997 Fiscal Year Final Research Report Summary
Sesearch on the mechanism of debonding process on the matrix-reinforcement interface of metai-matrix composites and the development of the method of analysis
| Project/Area Number |
08455058
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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 | 一般 |
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| Research Field |
Materials/Mechanics of materials
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| Research Institution | KYOTO UNIVERSITY |
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Principal Investigator |
INOUE Tatsuo KYOTO UNIVERSITY,Graduate School of Energy Science.Department of Energy Conversion Science, Professor, エネルギー科学研究科, 教授 (10025950)
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| Co-Investigator(Kenkyū-buntansha) |
MIZUNO Mamoru Nagoya University, Graduate School of Engineering, Department of Micro System En, 工学研究科, 助手 (70239250)
IMATANI Shoji KYOTO UNIVERSITY,Graduate School of Energy Science.Department of Energy Conversi, エネルギー科学研究科, 助教授 (70191898)
HOSHIDE Toshihiko KYOTO UNIVERSITY,Graduate School of Energy Science.Department of Energy Conversi, エネルギー科学研究科, 助教授 (80135623)
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| Project Period (FY) |
1996 – 1997
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| Keywords | Metal matrix composite / Debonding on interface / Fiber-reinforced MMC / Particle-dispersed MMC / Surface-modified MMC / Finite elemnet method / Molecular dynamics / Residual stress |
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| Research Abstract |
Results obtained in the present project are summarized as follows ;
1.Fiber-reinforced MMC : Creep damage in an SiC-whisker reinforced Al allpy was numerically simulated by using a unit cell model. The creep damage was revealed to initiate at the edge of whisker, from which a subsequent debonding developed. An FEM code was established for quenching process of MMC.The formation of voids and progress of damage initiated from voids were found to occur along the inteface.
2.Particle-dispersed MMC : Alminum dispersed with SiC particles was processed by a centrifugal casting method. The effect of casting condition on the radial distribution of particles was clarified experimentally. A FEM code for elastic-viscoplastic strees analysis was constructed based on the solidification of molten matrix considering the particle motion. The validity of the code was confirmed by experimental results.
3.Surface-modified MMC : A FEM code was proposed by modeling the detonation-coating process of ceramics on a metal surface. A large tensile stress was found to occur in coated layr. The equivalent stress of Mises type may control the failure of detonation-coated layr in an alumina-coated stainless steel under biaxial loading. Structural analysis using a molecular dynamics procedure developed for sputtering process suggested that an anchor effect was the main mechanism of interface bonding.
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