TY - GEN
T1 - Mechanics of fiber fragmentation in single-fiber composite
AU - Nishikawa, Masaaki
AU - Okabe, Tomonaga
AU - Takeda, Nobuo
PY - 2007/12/1
Y1 - 2007/12/1
N2 - We investigate the fragmentation process in a single-fiber composite (SFC), using a cohesive zone model. The evolution of microscopic damage near a fiber break has been investigated in detail. The results indicate that cohesive parameters for the fiber-matrix interface control the microscopic damage near a fiber break and the fragmentation process. We discuss how the major damage mode near a fiber break transits from interfacial debonding to matrix cracking. The transition to a damage pattern dominated by matrix cracking makes it difficult to use the fragmentation process to evaluate interface properties in an SFC test. The discussion demonstrates that the fiber strength distribution can be obtained by fitting the fragmentation process while the estimation of interfacial properties based on SFC tests becomes difficult because of the damage transition to matrix cracking in the case of strong interface.
AB - We investigate the fragmentation process in a single-fiber composite (SFC), using a cohesive zone model. The evolution of microscopic damage near a fiber break has been investigated in detail. The results indicate that cohesive parameters for the fiber-matrix interface control the microscopic damage near a fiber break and the fragmentation process. We discuss how the major damage mode near a fiber break transits from interfacial debonding to matrix cracking. The transition to a damage pattern dominated by matrix cracking makes it difficult to use the fragmentation process to evaluate interface properties in an SFC test. The discussion demonstrates that the fiber strength distribution can be obtained by fitting the fragmentation process while the estimation of interfacial properties based on SFC tests becomes difficult because of the damage transition to matrix cracking in the case of strong interface.
KW - Cohesive zone model
KW - Fiber-reinforced polymer matrix composites
KW - Interface properties
KW - Microscopic damage
KW - Single-fiber composite
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M3 - Conference contribution
SN - 9784931136052
T3 - ICCM International Conferences on Composite Materials
BT - Proceedings of the 16th International Conference on Composite Materials, ICCM-16 - "A Giant Step Towards Environmental Awareness
T2 - 16th International Conference on Composite Materials, ICCM-16 - "A Giant Step Towards Environmental Awareness: From Green Composites to Aerospace"
Y2 - 8 July 2007 through 13 July 2007
ER -