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Abstract
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The damage dissipated during fatigue crack propagation of fluorogold and fluorogreen polymeric materials has been studied using an automated data acquisition system (DAS). A low fatigue frequency of 1 Hz was performed under a tension-tension load-control fatigue test. All samples were notched with a notch-to-width ratio a/W of 0.1. Deformation, load, and hysteresis energy loops were measured continuously during the test and analyzed using the DAS. The calculations were based on the energy release rate J* and on the change in work expanded on damage formation and history-dependent viscous dissipative processes ....... The modified crack layer (MCL) model was used for extracting material-related parameters including the specific energy of damageγ' and the coefficient of energy dissipation [beta]'. The MCL theory was proven valid for describing the damage and cracking behavior of fluorogold and fluorogreen materials. The two parameters γ' and [beta]' are also suitable for the evaluation of the resistance to fracture and fatigue crack propagation.[PUBLICATION ABSTRACT]