Comprehending the Bending: A Comparison of Different Test Setups for Measuring the Out-of-Plane Flexural Rigidity of a UD Fabric

Christian Krogh*, Peter Hede Broberg, Jørgen Kepler, Johnny Jakobsen

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

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To simulate the forming process of a unidirectional (UD) glass fiber non-crimp fabric (NCF) for wind turbine blades, the fabric material needs to be characterized. In this way, input to the material model of the simulation can be generated. One important deformation to characterize is the out-of-plane bending. A number of test setups have been described in the literature but it is not clear which setup is more appropriate for the UD NCF under consideration. Therefore, five different out-of-plane bending test setups are compared and discussed, namely Peirce's cantilever test (with an inclined plane), the free-hanging cantilever test, a vertical cantilever test, a rotary rheometer bending test and a buckling test. For the latter an inverse modeling approach is developed. The test results shows that similar flexural rigidities can be computed from the different test setups but that some values are sensitive to the parameters used in the data processing techniques.
Original languageEnglish
JournalKey Engineering Materials
Pages (from-to)1257-1267
Number of pages11
Publication statusPublished - 23 Jul 2022
Event25th International Conference on Material Forming - Altice Forum, Braga, Portugal
Duration: 27 Apr 202229 Apr 2022


Conference25th International Conference on Material Forming
LocationAltice Forum
Internet address

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