Study on Fracture Behavior of 2D-C/C Composite for Application to Control Rod of Very High Temperature Reactor
For a control rod element of the Very High Temperature Reactor, a carbon fiber reinforced carbon matrix composite (C/C composite) is one of the major candidate materials for its high strength and thermal stability. In this study, in order to establish the data base of the 2D-C/C composite, the fract...
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| creator | Sumita, J Fujita, I Shibata, T Makita, T Takagi, T Kunimoto, E Sawa, K Kim, W Park, J |
| description | For a control rod element of the Very High Temperature Reactor, a carbon fiber reinforced carbon matrix composite (C/C composite) is one of the major candidate materials for its high strength and thermal stability. In this study, in order to establish the data base of the 2D-C/C composite, the fracture data was obtained by simulating the crack expected to be generated under the VHTR condition and the oxidation effect on the fracture behavior was evaluated. Moreover, the fracture mechanism of the C/C composite was investigated through scanning electron microscope observation. This study showed that the oxidized matrix caused reduction of the fracture toughness and the reduction ratio was dependent on the density of matrix and a number cracks. With increasing the oxidation, the fracture toughness is mainly dependent on the fiber characteristics. Furthermore, the crack grows along the boundary between fiber bundles without breaking the fiber. The cracks which were initiated at the interface between the matrix and the fiber were gathered into the voids in the boundary between fiber bundles, and, then, the cracks grew up in the matrix. |
| doi_str_mv | 10.1088/1757-899X/18/16/162010 |
| format | Article |
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In this study, in order to establish the data base of the 2D-C/C composite, the fracture data was obtained by simulating the crack expected to be generated under the VHTR condition and the oxidation effect on the fracture behavior was evaluated. Moreover, the fracture mechanism of the C/C composite was investigated through scanning electron microscope observation. This study showed that the oxidized matrix caused reduction of the fracture toughness and the reduction ratio was dependent on the density of matrix and a number cracks. With increasing the oxidation, the fracture toughness is mainly dependent on the fiber characteristics. Furthermore, the crack grows along the boundary between fiber bundles without breaking the fiber. 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Materials Science and Engineering</title><description>For a control rod element of the Very High Temperature Reactor, a carbon fiber reinforced carbon matrix composite (C/C composite) is one of the major candidate materials for its high strength and thermal stability. In this study, in order to establish the data base of the 2D-C/C composite, the fracture data was obtained by simulating the crack expected to be generated under the VHTR condition and the oxidation effect on the fracture behavior was evaluated. Moreover, the fracture mechanism of the C/C composite was investigated through scanning electron microscope observation. This study showed that the oxidized matrix caused reduction of the fracture toughness and the reduction ratio was dependent on the density of matrix and a number cracks. With increasing the oxidation, the fracture toughness is mainly dependent on the fiber characteristics. Furthermore, the crack grows along the boundary between fiber bundles without breaking the fiber. The cracks which were initiated at the interface between the matrix and the fiber were gathered into the voids in the boundary between fiber bundles, and, then, the cracks grew up in the matrix.</description><subject>Boundaries</subject><subject>Bundles</subject><subject>Carbon fibers</subject><subject>Carbon-carbon composites</subject><subject>Control rods</subject><subject>Cracks</subject><subject>Fiber composites</subject><subject>Fibers</subject><subject>Fracture mechanics</subject><subject>Fracture toughness</subject><subject>High temperature</subject><subject>Materials selection</subject><subject>Oxidation</subject><subject>Reactors</subject><subject>Reduction</subject><subject>Thermal stability</subject><issn>1757-899X</issn><issn>1757-8981</issn><issn>1757-899X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2011</creationdate><recordtype>article</recordtype><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><recordid>eNqNkVFLwzAUhYsoOKd_QQK--FKXmyZt8zirc8JAmFN8C1mauo6uqUkr7N-bWhERH4RAcnPPd7icGwTngK8Ap-kEEpaEKecvE_BF7A_BgA-C0Xfj8Mf7ODhxbotxnFCKR0H92Hb5HpkazaxUbWc1utYb-V4ai0yByE2YTTKUmV1jXNlqVPj_adNUpZJt6anW-GbdWlOhpcl75FnbPZqXrxu00rtGW_lputTe3djT4KiQldNnX_c4eJrdrrJ5uHi4u8-mi1BRStsw11wqXXAMQEHRlKeJwlhKxRLFOCGgZbTmPAKy1qwAiBlJYpbIlER5RFkejYPLwbex5q3TrhW70ildVbLWpnMCEh8SjwnlXnrxS7o1na39dIKwGDiNKGFeFQ8qZY1zVheiseVO2r0ALPo1iD5h0ScswBexGNbgQRjA0jT_Z8I_mD-1osmL6AMwkJYM</recordid><startdate>20111029</startdate><enddate>20111029</enddate><creator>Sumita, J</creator><creator>Fujita, I</creator><creator>Shibata, T</creator><creator>Makita, T</creator><creator>Takagi, T</creator><creator>Kunimoto, E</creator><creator>Sawa, K</creator><creator>Kim, W</creator><creator>Park, J</creator><general>IOP Publishing</general><scope>AAYXX</scope><scope>CITATION</scope><scope>8FE</scope><scope>8FG</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AFKRA</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>CCPQU</scope><scope>D1I</scope><scope>DWQXO</scope><scope>HCIFZ</scope><scope>KB.</scope><scope>L6V</scope><scope>M7S</scope><scope>PDBOC</scope><scope>PIMPY</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope><scope>PTHSS</scope><scope>7SR</scope><scope>7TB</scope><scope>8BQ</scope><scope>8FD</scope><scope>FR3</scope><scope>JG9</scope><scope>KR7</scope></search><sort><creationdate>20111029</creationdate><title>Study on Fracture Behavior of 2D-C/C Composite for Application to Control Rod of Very High Temperature Reactor</title><author>Sumita, J ; 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| subjects | Boundaries Bundles Carbon fibers Carbon-carbon composites Control rods Cracks Fiber composites Fibers Fracture mechanics Fracture toughness High temperature Materials selection Oxidation Reactors Reduction Thermal stability |
| title | Study on Fracture Behavior of 2D-C/C Composite for Application to Control Rod of Very High Temperature Reactor |
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