Design of and with thin-ply non-crimp fabric as building blocks for composites
Papila, Melih (2018) Design of and with thin-ply non-crimp fabric as building blocks for composites. Science and Engineering of Composite Materials, 25 (3). pp. 501-516. ISSN 0792-1233 (Print) 2191-0359 (Online)
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Official URL: http://dx.doi.org/10.1515/secm-2015-0386
New generation non-crimp fabric (NCF) offers an attractive thin and lightweight building block alternative in the design of composite materials and structures. Pre-assembly of multiple plies of parallel fibers, each laying in a different orientation would not require crimping of the fibers and would enable one-axis lay-up that can substantially reduce the labor, scrap, and manufacturing costs. A state-of-the-art tow-spreading technique enables ply thickness to be reduced to as low as one-third of the typical commercial high quality pre-preg ply thickness. The thin-ply NCF stacks result in well-dispersed plies of different fiber orientations and creates the so-called homogenized laminates without ply clustering. As an option, bi-angle thin-ply NCF offers two different fiber orientations with one being off-axis, e.g. at φ°, along with an on-axis 0° forming (0/φ) assembly. This allows to design in anisotropic properties within the NCF building block. An overview of several aspects of the thin-ply bi-angle NCF composites is provided to address associated benefits and opportunities in the lightweight structural composites design process.
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