TY - JOUR
T1 - Numerical analysis of fiber fragmentation in a SiC/A1 single-fiber composite specimen
AU - Davis, Jean E.
AU - Qu, Jianmin
PY - 2000/9
Y1 - 2000/9
N2 - In this paper, a numerical analysis by the finite-element method was carried out to simulate the fiber-fragmentation process in a single-fiber composite (SFC) specimen. The objective is to understand the fiber-fracture process and the way in which this process is affected by the fiber/matrix interface properties. In the analysis, the fiber strength is described by a Weibull distribution, the aluminum matrix is assumed to be elastic/plastic with a linear hardening law, and the fiber/matrix interface is modeled by an elastic/perfectly-plastic spring layer. In addition to the stress and strain distributions in the SFC, the evolution of fiber fractures and the stress/strain curves under monotonic loading were obtained through a sequence of finite-element computations with decreasing size of unit cell. The results indicate that the saturation length of the fiber fragments is very sensitive to the fiber/matrix interfacial strength. Therefore, it might be used as an indicator to measure the in situ fiber/matrix interfacial bond strength. (C) 2000 Elsevier Science Ltd. All rights reserved.
AB - In this paper, a numerical analysis by the finite-element method was carried out to simulate the fiber-fragmentation process in a single-fiber composite (SFC) specimen. The objective is to understand the fiber-fracture process and the way in which this process is affected by the fiber/matrix interface properties. In the analysis, the fiber strength is described by a Weibull distribution, the aluminum matrix is assumed to be elastic/plastic with a linear hardening law, and the fiber/matrix interface is modeled by an elastic/perfectly-plastic spring layer. In addition to the stress and strain distributions in the SFC, the evolution of fiber fractures and the stress/strain curves under monotonic loading were obtained through a sequence of finite-element computations with decreasing size of unit cell. The results indicate that the saturation length of the fiber fragments is very sensitive to the fiber/matrix interfacial strength. Therefore, it might be used as an indicator to measure the in situ fiber/matrix interfacial bond strength. (C) 2000 Elsevier Science Ltd. All rights reserved.
KW - Fiber fracture
KW - Fragmentation
KW - Interfacial strength
KW - Single-fiber composite
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U2 - 10.1016/S0266-3538(00)00026-9
DO - 10.1016/S0266-3538(00)00026-9
M3 - Article
AN - SCOPUS:0034280413
SN - 0266-3538
VL - 60
SP - 2297
EP - 2307
JO - Composites Science and Technology
JF - Composites Science and Technology
IS - 12-13
ER -