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Article Dans Une Revue Composites Part A: Applied Science and Manufacturing Année : 2019

Mechanical signature and full-field measurement of flow-induced large in-plane deformation of fibrous reinforcements in composite processing

Résumé

During compression of saturated fibrous reinforcement, the flow of the liquid can, under certain conditions, generate fiber-tows washout (in-plane movement of fiber-tows) due to the strong hydrodynamically induced force on the fibrous reinforcement. The objective of the study is first to detect experimentally the onset and measure the full-field magnitude of the flow-induced in-plane deformation occurring during the compression. Secondly, a methodology is presented, aiming at defining the mechanical signature of fiber-tow washout on transverse compression tests. For this purpose, a large-scale semi-transparent test bench has been developed in order to dynamically track the in-plane motion of the fiber-tows occurring in saturated compression. Then, a nomogram is given to identify a process window of a saturated fibrous reinforcement processed by consolidation.
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hal-04586127 , version 1 (29-05-2024)

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A. Hautefeuille, Sebastien Comas-Cardona, C. Binetruy. Mechanical signature and full-field measurement of flow-induced large in-plane deformation of fibrous reinforcements in composite processing. Composites Part A: Applied Science and Manufacturing, 2019, 118, pp.213-222. ⟨10.1016/j.compositesa.2018.12.030⟩. ⟨hal-04586127⟩
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