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Variable-stiffness composite panels: Defect tolerance under in-plane tensile loading
Falcó Salcines, Olben; Mayugo Majó, Joan Andreu; Lopes, Cláudio Saúl; Gascons i Clarió, Narcís; Costa i Balanzat, Josep
Automated Fiber Placement is being extensively used in the production of major composite components for the aircraft industry. This technology enables the production of tow-steered panels, which have been proven to greatly improve the structural efficiency of composites by means of in-plane stiffness variation and load redistribution. However, traditional straight-fiber architectures are still preferred. One of the reasons behind this is related to the uncertainties, as a result of process-induced defects, in the mechanical performance of the laminates. This experimental work investigates the effect of the fiber angle discontinuities between different tow courses in a ply on the un-notched and open-hole tensile strength of the laminate. The influence of several manufacturing parameters are studied in detail. The results reveal that 'ply staggering' and '0% gap coverage' is an effective combination in reducing the influence of defects in these laminates
Materials compostos
Composite materials
Fibres
Fibers
Indústria aeronàutica
Aircraft industry
Tots els drets reservats
Article
info:eu-repo/semantics/submittedVersion
Elsevier
         

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