Abstract
The loading patterns usually applied to structures that operate in the open air are normally of variable amplitude and in most cases comprise at several loading components. The resulting stress and strain fields that consequently develop in the materials composing the engineering structures are complex with multiple non-zero stress and strain tensor components. The life prediction of a composite material in the presence of such complicated stress fields is a very demanding task since a number of different factors must be taken into account. The experimental characterization of composite systems under irregular loading patterns is another delicate matter, hindering the possibility of developing methods based solely on experimental results and therefore making theoretical modeling procedures indispensable. Several methods have been introduced for the life prediction of composite materials under such loading conditions. A brief review is presented in this chapter, while a classic fatigue design methodology is analytically presented and applied to the available variable amplitude fatigue data from Chap. 2 in order to demonstrate its applicability to the selected cases.
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Vassilopoulos, A.P., Keller, T. (2011). Life Prediction Under Multiaxial Complex Stress States of Variable Amplitude. In: Fatigue of Fiber-reinforced Composites. Engineering Materials and Processes. Springer, London. https://doi.org/10.1007/978-1-84996-181-3_7
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DOI: https://doi.org/10.1007/978-1-84996-181-3_7
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