Journal
FIBERS AND POLYMERS
Volume 24, Issue 10, Pages 3699-3712Publisher
KOREAN FIBER SOC
DOI: 10.1007/s12221-023-00344-z
Keywords
Double-notched shear test; In-plane shear test; Flexural property; Failure mechanism; Double-side-loop 2D woven laminated composite
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This paper investigates the properties of a new double-side-loop 2D woven laminated composite (DWLC), and finds that adding loop warp yarns can greatly improve the interlayer properties of the composite material, leading to superior performance under flexural, shear and impact loads.
The general two-dimensional (2D) woven laminated composite (GWLC) is widely used in aviation, aerospace and high speed railways, and its superior specific stiffness and strength substantially reduce the weight of the structural components. However, when the GWLC is damaged by flexural, shear and impact loads, the layers are prone to delamination. To improve the interlayer properties of the GWLC, a loop warp yarn is added to the plain fabric by means of three-dimensional (3D) weaving technology, resulting in a double-side-loop fabric with Z-directional fibers. This paper investigates the double-notched shear (DNS) properties, in-plane shear properties, and flexural properties of GWLC and a new double-side-loop 2D woven laminated composite (DWLC). The test results verify that adding the loop warp yarns can greatly improve the interlayer properties of the general 2D woven laminated composites. The DWLC increases the interlaminar shear strength by 81.5%, the in-plane shear strength by 49.4%, and the flexural strength and modulus by 90.2% and 61.4%, respectively. The excellent mechanical properties of the DWLC lay a foundation for loop fabrics in engineering applications.
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