Tough–brittle transition in unidirectional composites with fibre breakage and fibre–matrix interfacial failure
Source abstract
Abstract
Fracture of three-dimensional unidirectional composites is studied through Monte Carlo fracture simulations on model composites. Fracture develops in the model composites by the failure of fibre segments wherein the tensile stress exceeds a Weibull-distributed random strength, and by the failure of the fibre–matrix interfaces wherein the shear stress exceeds a deterministic interfacial strength, (T_0). The size of the weakest-link failure event is inferred from empirical strength distributions obtained from the simulations. It is found to diverge or converge with composite size for (T_0) below or above a threshold value, respectively. The threshold is identified as the tough–brittle fracture mode transition. The mechanistic cause underlying the transition is also identified.
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Research context
OpenAlex topics: Fiber-reinforced polymer composites · Mechanical Behavior of Composites · Natural Fiber Reinforced Composites
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (43)
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