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In uni-axial fatigue tests on fibre-reinforced composites, the stress–strain hysteresis loop can be used as a measure for stiffness degradation and energy dissipation. In case of three-point bending fatigue tests, the hysteresis loop of the bending force versus midspan displacement can yield similar information. In this paper, it is shown that the shape of the hysteresis loop can be affected significantly...
In general, fatigue of fibre-reinforced composite materials is a quite complex phenomenon, and a large research effort is being spent on it today. Due to deficiencies in the current life prediction methodologies for these materials, composite structures are often overdesigned: large factors of safety are adopted and extensive prototype-testing is required to allow for an acceptable life time prediction...
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