4. Compression fatigue
Unlike metallic materials, which suffer little or no damage in compression, all composite materials subjected to monotonic or cyclic loading have a different resistance to tensile loading. This fact makes compression testing essential. Compressive fatigue tests on plates are difficult to perform. In order to avoid generalized buckling of the laminated plate under test, the standards propose various set-ups, the principle of which is illustrated in the diagrams in Fig. 20
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Compression fatigue
Flexural fatigue
Bibliography
Software tools
Commercial finite element calculation codes (ABAQUS, ANSYS...) do not perform fatigue calculations, but calculate for a given number of cycles. The material characteristics then correspond to the residual properties for the number of cycles concerned. The question then remains: for which cycles is it wise to perform these calculations? The answer can be found in the cycle skipping techniques mentioned in [AM 5 410] § 8.2....
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ICFC5, Fifth International Conference on Fatigue of Composites 16-19, October 2010 Nanjing, China.
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Organizations – Federations – Associations (non-exhaustive list)SF2M, Société Française de Métallurgie et de Matériaux. Fatigue Commission http://www.sf2m.asso.fr
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