Investigation into the changes in bending stiffness of a textile reinforced composite due to in-plane fabric shear: Part 1 – Experiment. (June 2016)

• Record Type: Journal Article
• Authors: Mitchell, Cynthia; Dangora, Lisa; Bielmeier, Christie; Sherwood, James
• Is Part Of: Composites. Volume 85(2016)
• Page Start: 94
• Page End: 102
• Publication Date: 2016-06
• Subjects: A. Fabrics/textiles -- B. Mechanical properties -- C. Laminate mechanics -- D. Shear deformation; Composite materials -- Periodicals; Manufacturing processes -- Periodicals; Composite materials; Manufacturing processes; Periodicals; 620.11805
• DOI: 10.1016/j.compositesa.2016.03.008
• Languages: English
• ISSNs: 1359-835X

Abstract

Abstract: A study to investigate the factors that contribute to the variation among the stiffnesses of consolidated composite plates reinforced by plain-weave fabrics with various degrees of in-plane shear is presented. The first part of the two-part study focuses on the experiments performed. Three-point bend tests were used to measure the effective stiffness of the composite plates along the global X and Y axes, which were aligned with the weft and warp orientations, respectively, in the undeformed configuration at 0° of shear. The warp yarns were sheared 0°, 10°, 20°, 25° and 30° toward the weft yarns. It was observed that as the shear angle in the plates increased, the thickness of the plates also increased. An increase in stiffness for bending in X -direction with increasing shear angle was observed as was expected, but the change in stiffness for bending in Y -direction was observed to be inconsistent with the expected decrease with increasing degree of shear.